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Obendorf, Ralph Louis
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Ralph L. Obendorf, Professor of Crop Physiology in the Department of Crop and Soil Sciences, is a specialist in Seed Biology with teaching and research responsibilities. His research addresses factors and functions that regulate seed growth, seed maturation, tolerance to desiccation, and seed performance. His work on soluble carbohydrates in seeds as related to desiccation tolerance and germination led to the discovery of new health-related compounds in seeds. Obendorf's research emphasizes the training of 3-12 undergraduate students in research each semester. He had 13 undergraduates in his lab in 2007 and 43 undergraduate coauthors since 1997. His research and teaching are globally recognized. Obendorf is active in numerous professional societies nationally and internationally. He was president of the International Society for Seed Science (1999-2005) and is owner/editor (1995-present) of SEED-BIOLOGY-L@cornell.edu, a highly successful mailing list promoting global exchange of information on seed research among 450 subscribers residing in 50 countries and 45 states.
Research Areas
- agricultural biotechnology
- biochemistry
- biotechnology
- cell biology
- crop management or crop science
- intellectual property
- molecular biology
- new life sciences
- plant biology
- plant breeding and genetics
- plant sciences
- seed science
- soil and crop science
- value-added agriculture
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Affiliations
Research
research overview
- Ralph L. Obendorf, Professor of Crop Physiology in the Department of Crop and Soil Sciences, is a specialist in Seed Biology with teaching and research responsibilities. His research addresses factors and functions that regulate seed growth, seed maturation, tolerance to desiccation, and seed performance. His work on soluble carbohydrates in seeds as related to desiccation tolerance and germination led to the discovery of new health-related compounds in seeds. One of these, fagopyritol A1, is isosteric to an insulin mediator believed to be deficient in subjects with non-insulin dependent diabetes mellitus (NIDDM or type II diabetes) and polycystic ovary syndrome (affecting 10% of women of reproductive age). Three genes have been cloned from buckwheat seeds and heterologously expressed in bacteria; the purified recombinant enzyme proteins catalyze the biosynthesis of fagopyritols and one may also catalyze the biosynthesis of a putative insulin mediator. Nine patents have been awarded since 1998. Obendorf has trained more than 230 undergraduates in research and he emphasizes the training of 3-12 undergraduate students in research each semester. He currently has 3 undergraduates in his lab and 43 undergraduate coauthors since 1997. His research and teaching are globally recognized. Obendorf is active in numerous professional societies nationally and internationally. He was president-elect and president of the International Society for Seed Science (1999-2005) and is owner/editor (1995-present) of SEED-BIOLOGY-L@cornell.edu, a highly successful mailing list promoting global exchange of information on seed research among 450 subscribers residing in 50 countries and 45 states. He is frequently invited to prepare reviews on select topics and to serve as reviewer of manuscripts for multiple journals. He participates in international seed research conferences and symposia.
research activities
keywords
- crop physiology
- field crops
- health-related components in seeds
- seed biology
- seed composition and performance
- structure of health-related compounds in seeds
- trains society ready students
submitted impact statement
Publications
individual publications
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academic article
- Raffinose and stachyose accumulate in hypocotyls during drying of common buckwheat (Fagopyrum esculentum Moench) seedlings. Crop Science. 53:1615-1625. 2013
- Soybean seed coat cup unloading on plants with low-raffinose, low-stachyose seed. Seed Science Research. 19:145-153. 2009
- Characterization of phenolics by LC-UV/vis, LC-MS/MS and sugars by GC in Melicoccus bijugatus Jacq. 'Montgomery' fruits. Food Chemistry. 111:1017-1024. 2008
- Chemical Composition, Antimicrobial and Free Radical Scavenging Activities of Meliococcus bijugatus Jacq, Fruits From the Dominican Republic and Florida. Journal of the Science of Food and Agriculture. 111. 2008
- A multifunctional galactinol synthase catalyzes the synthesis of fagopyritol A1 and fagopyritol B1 in buckwheat seed. Plant Science. 168:681-690. 2005
- Cyclitol galactosides in embryos of buckwheat stem-leaf-seed explants fed D-chiro-inositol, myo-inositol, or D-pinitol. Seed Science Research. 15:329-338. 2005
- Fagopyritol accumulation and germination of buckwheat seeds matured at 15, 22, and 30ºC. Crop Science. 45:1264-1270. 2005
- Molecular structure of lathyritol, a galactosyl bornesitol from Lathryus odoratus seeds, by NMR. Carbohydrate Research. 340:1441-1446. 2005
- myo-Inositol, D-chiro-inositol, and D-pinitol synthesis, transport, and galactoside formation in soybean explants. Crop Science. 45:1312-1319. 2005
- Expression of the maize GALACTINOL SYNTHASE gene family: (I) Expression of two different genes during seed development and germination. Physiologia Plantarum. 121:634-646. 2004
- Soybean galactinol sythase forms fagopyritol B1 but not galactopinitiols: substrate feeding of isolated embryos and teterologous expression. Seed Science Research. 14:321-333. 2004
- Buckwheat milling fractions: Description, macronutrient composition, and dietary fiber. Journal of Cereal Science. 33:271-278. 2001
- Buckwheat seed set in planta and during in vitro inflorescence culture: Evaluation of temperature and water deficit stress. Seed Science Research. 11:223-233. 2001
- Minerals, phytic acid, tannin and rutin in buckwheat seed milling fractions. Journal of the Science of Food and Agriculture. 81:1094-1100. 2001
- Quantitative assessment of some factors limiting seed set in buckwheat. Crop Science Journal. 41:1792-1799. 2001
- Fagopyritols, D-chiro-inositol, and other soluble carbohydrates in buckwheat seed milling fractions. Journal of Agricultural and Food Chemistry. 48:2843-2847. 2000
- Molecular structure of fagopyritol A1 (O-alpha-D-galactopyranosyl-(1-3)-D-chiro-inositol) by NMR. Carbohydrate Research. 328:623-627. 2000
- Ethanol production by hydrated seeds: A high resolution index of seed quality. Acta Horticulturae. 504:153-160. 1999
- Methanol, pectin and pectin esterase changes during soybean seed maturation. Seed Science Research. 9:311-320. 1999
- Drying rate alters soluble carbohydrates, desiccation tolerance, and seedling growth of soybean zygotic embryos during in vitro maturation. Plant Science. 132:1-12. 1998
- Drying rate alters soluble carbohydrates, desiccation tolerance, and subsequent seedling growth of soybean (Glycine max L. Merrill) zygotic embryos during in vitro maturation. Plant Science. 132:1-12. 1998
- Fagopyritol B1, O-a-D-galactopyranosyl-(1 2)-D-chiro-inositol, a galactosyl cyclitol in maturing buckwheat seeds associated with desiccation tolerance. Planta. 205:1-11. 1998
- NMR investigation of the structure of fagopyritol B1 from buckwheat seeds. Bulletin of the Polish Academy of Sciences, Chemistry. 46:9-13. 1998
- Soluble oligosaccharides and galactosyl cyclitols in maturing soybean seeds in planta and in vitro. Crop Science Journal. 38:78-84. 1998
- Soybean seed pectinesterase. Seed Science Research. 8:455-461. 1998
- Raffinose accumulation in maize embryos in the absence of a fully functional Vp1 gene product. Planta. 203:222-228. 1997
- Raffinose accumulation related to desiccation tolerance during maize (Zea mays L.) seed development and maturation. Journal of Plant Physiology. 150:481-488. 1997
- Soluble carbohydrates in desiccation tolerance of yellow lupin seeds during maturation and germination. Seed Science Research. 7:107-115. 1997
- Soluble sugars and flatulence-producing oligosaccharides in maturing yellow lupin (Lupinus luteus L.) seeds. Seed Science Research. 7:185-193. 1997
- Soluble carbohydrates in white lupin seeds matured at 13 and 28 degrees C. Crop Science. 36:1277-1282. 1996
- Desiccation tolerance in developing soybean seeds: The role of stress proteins. Physiologia Plantarum. 93:630-638. 1995
- Soluble saccharides and cyclitols in alfalfa (Medicago sativa L.) somatic embryos. Plant Physiology. 108. 1995
- Soluble saccharides and cyclitols in alfalfa (Medicago sativa L.) somatic embryos, leaflets, and mature seeds. Plant Science. 109:191-198. 1995
- Seed desiccation tolerance and storability: Dependence on flatulence-producing oligosaccharides and cyclitols -- review and survey. Seed Science Research. 4:385-405. 1994
- Changes in sterols and fatty acids of buckwheat endosperm and embryo during seed development. Journal of Agricultural and Food Chemistry. 40:745-750. 1992
- Maturation proteins and sugars in desiccation tolerance of developing soybean seeds. Plant Physiology. 100:225-230. 1992
- Relationship of methanol accumulation to preharvest seed deterioration and germplasm preservation. Search. 27:1-12. 1992
- Maturation proteins associated with desiccation tolerance in soybean. Plant Physiology. 96:868-874. 1991
- Soybean isocitrate lyase: purification, properties, immunoassay, and N-terminal sequence. Plant Physiology and Biochemistry. 29:119-129. 1991
- Soybean somatic embryo maturation: composition, respiration and water relations. Seed Science Research. 1:251-262. 1991
- Ureides and amides as nitrogen sources for soybean seed growth and maturation in vitro. Crop Science. 31:1319-1323. 1991
- Methanol accumulation in maturing seeds. Journal of Experimental Botany. 41:489-495. 1990
- Methods of evaluation for preharvest sprouting resistance in wheat breeding programs. Canadian Journal of Plant Science. 69:681-689. 1989
- Soybean seed water relations during in situ and in vitro growth and maturation. Plant Physiology. 89:610-616. 1989
- Soybean seed respiration during simulated preharvest deterioration. Journal of Experimental Botany. 37:1364-1375. 1986
- Photoperiod effects on growth rate of in vitro cultured soybean embryos. Botanical Gazette. 145:157-162. 1984
- Precocious germination during in vitro growth of soybean seeds. Plant Physiology. 76:1024-1028. 1984
- Soya bean seed growth and maturation in vitro without pods. Annals of Botany. 53:853-863. 1984
- Respiration during seed maturation. Physiologia Plantarum. 57:397-401. 1983
- Soya bean seed growth and maturation by in vitro pod culture. Annals of Botany. 51:217-227. 1983
- Compositional analysis of in vitro matured soybean seeds. Plant Science Letters. 27:129-135. 1982
- Use of tetraethylthiuram disulfide to discriminate between alternative respiration and lipoxygenase. Plant Physiology. 67:962-964. 1981
- Imbibitional chilling injury in soybean axes: relationship to stelar lesions and seasonal environments. Agronomy Journal. 72:923-928. 1980
- Influence of seed maturation on germinability of soybean. Crop Science. 20:483-486. 1980
- Relationship of stelar lesions to radicle grwoth in corn seedlings. Agronomy Journal. 71:954-958. 1979
- Occurrence of a stelar lesion during imbibitional chilling of Zea mays L.. American Journal of Botany. 65:50-56. 1978
- Independence of imbibitional chilling injury and energy metabolism in corn. Crop Science. 16:449-452. 1976
- Transcription of ribosomal and messenger RNAs in early wheat embryo germination. Plant Physiology. 56:502-507. 1975
- Rapid increase in adenosine 5'-triphosphate during early wheat embryo germination. Plant Physiology. 53:779-781. 1974
- Factors associated with early germination in corn under cool condition. Proceedings of the Annual Corn and Sorghum Research Conference. 27:132-139. 1973
- Differential growth of corn (Zea mays L.) hybrids seeded at cold root zone temperatures. Crop Science Journal. 12:572-575. 1972
- Imbibitional chilling injury in Zea mays L. altered by initial kernel moisture and maternal parent. Crop Science. 12:369-373. 1972
- Interaction of initial seed moisture and imbibitional temperature on germination and productivity of soybean. Crop Science Journal. 12:664-667. 1972
- Seed moisture and cool season germination. New York's Food and Life Sciences Quarterly. 4:35-37. 1971
- Effect of seed moisture an temperature sensitivity during imbibition of soybean. Crop Science. 10:563-566. 1970
- Influence of age and illumination on distribution of several Calvin cycle enzymes in greening barley leaves. Plant Physiology. 45:579-582. 1970
- Effects of light intensity on photosynthetic carboxylative phase enzymes and chlorophyll synthesis in greening leaves of Hordeum vulgare L. Plant Physiology. 41:913-918. 1966
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article
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chapter
- Chapter 11: Characterization of sugars, cyclitols and galactosyl cyclitols in seeds by GC. Food and Nutritional Components in Focus Vol 3: Dietary Sugars: Chemistry, Analysis, Function and Effects. 167-185. 2012
- Chapter 13: Soluble Carbohydrates in Soybean. Soybean - Biochemistry, Chemistry and Physiology, ISBN 978-953-308-115-1. 201-228. 2011
- Galactosyl cyclitol accumulation enhanced by substrate feeding of soybean embryos. The Biology of Seeds: Recent Research Advances. 51-60. 2003
- Recent accomplishments and new opportunities in seed research. The Biology of Seeds: Recent Research Advances. 447-452. 2003
- Damage and tolerance in retrospect and prospect. Desiccation and Plant Survival. 367-372. 2002
- Buckwheat fagopyritols. Advances in Buckwheat Research, Seventh International Symposium on Buckwheat. 1998
- The use of buckwheat bran milling fraction in bread. Advances in Buckwheat Research, Seventh International Symposium on Buckwheat. 1998
- Raffinose series oligosaccharides and desiccation tolerance of developing viviparous maize embryos. Basic and Applied Aspects of Seed Biology: Proceedings of the 5th International Workshop on Seeds. 95-101. 1997
- Buckwheat seed development and regulation of seed set. Proceedings of the Fourth International Workshop on Seeds: Basic and Applied Aspects of Seed Biology. 1993
- Buckwheat seed set and development by in vitro inflorescence culture. Proceedings of the Fourth International Workshop on Seeds: Basic and Applied Aspects of Seed Biology. 61-66. 1993
- Limits to seed set in buckwheat. Proceedings of the 5th International Symposium on Buckwheat. 236-239. 1993
- Structure and chemical composition of developing buckwheat seed. New Crops. 244-251. 1993
- The role of Lea proteins in desiccation tolerance in soybean. Proceedings of the Fourth International Workshop on Seeds: Basic and Applied Aspects of Seed Biology. 121-126. 1993
- The role of heat stable proteins in desiccation tolerance of soybean. Canadian Society of Plant Physiologists Annual Meeting. 1990
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conference paper
- Ethanol production by hydrated seeds: A high resolution index of seed quality. Acta Horticulturae. 153-160. 1999
- Changes in sucrose, cyclitols and their galactosyl derivatives with seed aging. Basic and applied aspects of seed biology: Proceedings of the Fifth International Workshop on Seeds, Reading, 1995. 515-522. 1997
- Galactosyl cyclitols and raffinose family oligosaccharides in relation to desiccation tolerance of pea and soyabean seedlings. Basic and Applied Aspects of Seed Biology: Proceedings of the Fith International Workshop on Seeds. 119-128. 1997
- Raffinose series oligosaccharides and desiccation tolerance of developing viviparous maize embryos. Basic and Applied Aspects of Seed Biology: Proceedings of the 5th International Workshop on Seeds. 95-101. 1997
- Raffinose series oligosaccharides and desiccation tolerance of developing viviparous maize embryos. Basic and Applied Aspects of Seed Biology: Proceedings of the Fifth International Workshop on Seeds. 95-101. 1997
- Does recurrent selection for no-till conditions reduce imbibitional chilling injury in maize? . Proc. Fiftieth Annual Northeastern Corn Improvement Conference. 1995
- Factors associated with early germination in corn under cool condition. Proceedings of the Annual Corn and Sorghum Research Conference. 132-139. 1973
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document part
- Free Cyclitol Unloading From Seed Coats On Stem-Leaf-Pod Explants of Low-Raffinose, Low-Stachyose, Low-Phytin Soybean (abstract 60227) 2010
- Detection and genetic analysis of polyembryonic pale swallow-wort seeds.. 22. 2009
- Are raffinose and stachyose unloaded from soybean seed coats to developing embryos? . 34. 2008
- Determination of genetic similarity between embryos in polyembryonic Vincetoxicum rossicum (pale swallow-ort) seeds. 96. 2008
- NMR structure of trigalactosyl myo-inositol from buckwheat seeds.. 35. 2008
- Soybean seed coat cup unloading on plants with low-raffinose, low-stachyose seed.. 34. 2008
- Sugars, Phenolics, Antimicrobial Activity and Free Radical Scavenging Activity of Melicoccus bujugartus 2006
- Sugars, phenolics and antimicrobial and free radicle scavenging activities in Spanish Lime (Melicoccus bijugatus). 91. 2006
- Enhancing health-related cyclitols in soy products. 44-45. 2003
- Fagopyritol B1 biosynthesized by galactinol synthase in soybean seeds 2003
- Galactosyl cyclitol accumulation enhanced by substrate feeding of soybean embryos 2003
- Probing the pea seed: The search for an a-galactosidase gene 2003
- Structure of galactosyl cyclitols in buckwheat and soybean seeds 2003
- Structures of galactosyl cyclitols in seeds 2003
- Transport of myo-inositol, D-pinitol, and D-chiro-inositol in soybean explants. 10. 2003
- Galactosyl cyclitol accumulation enhanced by substrate feeding of soybean embryos. 14. 2002
- Ethanol Production as a Rapid Seed Quality Test: Proposed Mechanisms 1999
- Fagopyritol content of buckwheat seed milling fractions 1999
- Soybean seed stachyose synthase and galactopinitol synthase. 16. 1999
- Galactopinitol synthase -- a new enzyme activity in soybean seeds 1998
- Pinitol deficiency in soybean somatic embryos. 120. 1998
- Soybean seed stachyose synthase and galactopinitol synthase 1998
- Galactosyl pinitol accumulation in maturing soybean seed 1997
- Galactosyl pinitol accumulation in maturing soybean seed. 122. 1997
- Imbibitional chilling sensitivity in elite sorghum hybrids. 61. 1997
- Oligosaccharides and galactosyl cyclitols in seed desiccation tolerance 1997
- Soluble carbohydrates in desiccation tolerance of yellow lupin seeds during maturation and germination. 27. 1997
- A comparison of pinitols in somatic and zygotic soybean embryos. 40. 1996
- Fagopyritol and raffinose oligosaccharides related to desiccation tolerance of buckwheat hypocotyls 1996
- Raffinose accumulation in maize embryos occurs in the absence of a fully functional Vp1 gene product 1996
- Raffinose oligosaccharides and differential desiccation tolerance in seedling hypocotyls. 14. 1996
- Saccharides and galactosyl cyclitols in maturing yellow lupin seeds. 57. 1996
- Seed maturation temperature alters carbohydrate composition of embryo and seed quality of buckwheat (Fagopyrum esculentum Moench). 39. 1996
- Soluble sugars and galactosyl cyclitols in maturing yellow lupin seeds. 41-42. 1996
- Yield, seed composition, and phenology as affected by temperature during seed maturation. 45. 1996
- Changes in sucrose, cyclitols and their galactosyl derivatives with seed aging. 53. 1995
- Changes in sucrose, cyclitols and their galactosyl derivatives with seed aging 1995
- Galactosyl cyclitols and raffinose family oligosaccharides in relation to desiccation tolerance of pea and soybean seedlings. 10. 1995
- Raffinose series oligosaccharides and desiccation tolerance of developing viviparous maize embryos. 5. 1995
- Role of oligosaccharides and galactosyl cyclitols in seed desiccation tolerance. 2. 1995
- Soluble carbohydrates in white lupin (Lupinus albus L. cv. Ultra) seeds matured at 13 and 28°C. 12. 1995
- Soluble saccharides and cyclitols in alfalfa (Medicago sativa L.) somatic embryos (abstract no. 479) 1995
- Changes in soluble carbohydrates during seed aging 1994
- Changes in soluble carbohydrates during seed aging. 176. 1994
- Galactosyl chiro-inositol in buckwheat seeds correlates with desiccation tolerance during maturation and germination 1994
- Maturing buckwheat seeds accumulate galacto-chiro-inositol instead of stachyose 1994
- Seed desiccation tolerance and storability: dependence on the flatulence-producing sugars. 30. 1994
- Soybean seed pectinesterase. 109. 1994
- ABA-induced Lea proteins and desiccation tolerance in developing soybean seeds 1993
- Development of desiccation tolerance during seed maturation. 257. 1993
- Possibility for biosynthesis of sterols and steroidal sapogenins in immature seeds of fenugreek 1993
- Seed set in buckwheat altered by temperature and water deficit stress 1993
- Buckwheat seed set and development by in vitro inflorescence culture 1992
- In vitro pollination and seed set in detached racemes of buckwheat 1992
- Pre-fertilization events limit seed production in buckwheat, Fagopyrum esculentum cv. Mancan 1992
- Seed maturation and desiccation tolerance in relation to germination. 163. 1992
- The role of Lea proteins in desiccation tolerance of soybean 1992
- The role of Lea proteins in desiccation tolerance of soybean 1992
- Buckwheat seed development and changes in sugars, organic acids, and amino acids 1991
- Buckwheat seed growth and analysis of sterol, fatty acid, organic acid, amino acid, and sugar composition. 47-48. 1991
- Sterols and fatty acids change during development of buckwheat embryo and endosperm 1991
- The role of sugars and maturation proteins in desiccation tolerance of soybean 1991
- The use of a relational database to investigate the physiological basis of low seed set in common buckwheat (Fagopyrum esculentum Moench cv. Mancan) 1991
- Chilling effects on soybean seed maturation, water relations, respiration and polyribosomes 1988
- Maturation of soybean somatic embryos to a desiccation tolerant state 1988
- Management of corn growth and maturation by climate analysis. 9. 1987
- Soybean somatic embryo composition, respiration and water relations during maturation to a desiccation tolerant state. 153. 1987
- Microcomputer software for teaching climate analysis and grain crop management. 51. 1986
- Somatic embryogenesis from cotyledonary tissues of soybean and maturation to a desiccation tolerant state 1986
- Soybean seed maturation, respiration, and preharvest deterioration. 130. 1986
- Soybean seed water relations during growth and maturation. 129. 1986
- Light regulation of embryo maturation in vitro. 19. 1985
- Respiration during preharvest seed deterioration 1985
- Seed water content fluctuation and metabolic activity during imbibition of soybean. 18. 1984
- Soybean seed growth and maturation in vitro. 41. 1984
- Allantoin, asparagine and glutamine as N sources for soybean seed growth and maturation in vitro 1983
- Photoperiod and light flux alter soybean seed growth in vitro. 96. 1983
- Precocious germination during in vitro growth of soybean seeds 1983
- A method to detect long-lived messenger RNA in soybean axes by in vitro labelling during seed formation 1981
- Oxidation of malate by soybean axis mitochondria 1981
- Purification and some properties of isocitrate lyase from cotyledons of germinating soybean 1981
- Amino acid composition and yield of endosperm protein fractions of normal, opaque-2, sugary-2, and sugary-2-opaque-2 hybrid maize. 75. 1980
- Cyanide-insensitive respiration during soybean seed formation and germination. 88. 1980
- Imbibitional surface damage in isolated hypocotyl-root axes of soybean (Glycine max (L.) Merr. cv. Chippewa 64). 79. 1980
- Imbibitional surface damage in isolated hypocotyl-root axes of soybean (Glycine max (L.) Merr. cv. Chippewa 64) 1980
- Polyribosome formation and mRNA synthesis in soybean embryonic axes during early germination. 77. 1980
- Proteinase activities in germinating soybean. 89. 1980
- Relationship of stelar lesions to seedling vigor. 10. 1979
- Imbibitional chilling of Zea mays L.; Inheritance studies and further examination of the stelar lesion. 94. 1976
- Stelar lesion formation during hydration of low moisture seeds. 11. 1976
- Anatomical studies on the mechanism of imbibitional chilling injury during germination of Zea mays L.. 69. 1975
- Imbibitional chilling injury during germination of Zea mays L. - Growth studies and effects upon energy metabolism. 70. 1974
- Influence of initial kernel moisture on cold temperature sensitivity of corn (Zea mays L.). 25. 1971
- On the improvement of agronomic teaching. 157. 1968
- New horizons of understanding in agronomy. 146. 1967
- Effect of light intensity on in vivo stimulation of carboxylative phase enzymes in greening barley leaves 1966
- In vitro light stimulation and distribution of photosynthetic carboxylative phase enzyme activities in leaf blades of greening barley seedlings 1966
- Red clover seed production: Intra varietal variation. 34. 1966
- An Investigation of phenolics in Melicoccus bijugarus “Montgomery” variety fruit tissues 2007
Teaching
teaching overview
- Obendorf’s teaching (40%) responsibilities include “Field Crop Systems” (CSS 2110, CSS 4050) new courses starting in Fall 2008, “Grains and Nutraceuticals” (CSS 311) through Fall 2007, "Teaching Experience" (BioG 4980, CSS 4980), “Undergraduate Research” (CSS 4990), "Independent Research in Biology" (BioG 4990), "Introduction to Research Methods" (BioG 2990), "Seed Biology & Health" (BioG 1250 through Fall 2008), and “Seed Biology” (CSS 6120) with an emphasis on training society ready graduates. Obendorf has served as academic advisor to about 135 undergraduate students and has trained >220 undergraduates in research. He mentors 3-15 undergraduates each year in research resulting in 31 undergraduate coauthors on refereed journal papers. At least 39 undergraduates have presented their research in CURB’s Cornell Undergraduate Research Symposium. One presented her undergraduate research in an international seed development symposium in Salamanca, Spain, in May 2002. One presented her undergraduate research at an international symposium in Cambridge, UK, in April 2003. Two presented their research at an international symposium on soy in Florida in September 2003. Another presented her undergraduate research at an international seed biology conference in Olsztyn, Poland, in July 2008. Two were awarded first and third place in a national Undergraduate Research Symposium Oral Presentation Contest, and one was awarded best undergraduate presentation in an international professional meeting in 2003. One received the Goldwater Scholarship in 2008. One received the SUNY Chancellor's Award for Student Excellence in 2005 and also received Highest Honors in the Plant Biology Research Honors Program in 2005. Another received the College of Agriculture and Life Sciences Outstanding Undergraduate Work-Study Employee Award in 1995. One was a Cornell-Hughes Program Scholar in 2006, four in 2003, and two in 2002. Three students received funded undergraduate research grants in 2008-2009, three in 2007-2008, five in 2006-2007, three in 2005-2006, three in 2004-2005, ten in 2003-2004, three in 2003, and two in 2002. Four students completed Undergraduate Research Honors projects in Plant Biology (2003, 2005, 2008) and Plant Science Honors Programs (2003-2004). One to fifteen students conduct undergraduate research projects each year. Four undergraduates from a French university and 1 high school NSF intern in the Environmental Sciences Program were trained in his lab. Recent students trained in his lab are pursuing research degree programs including PhD programs in molecular biology at Stanford, Princeton, and Illinois, PhD in chemisty at the University of Wisconsin (Madison), PhD in biomedical sciences at Univ Calif at San Diego, MS or MPH programs at Columbia, Berkeley and Seattle (U. Washington), or coupled PhD research programs with doctorate programs in medicine (MD) (Michigan) or veterinary medicine (DVM) (Ohio). Other recent graduates are attending or recently graduated from medical schools (Richmond VA, Oakland CA, Stanford, Yale, Toronto, Sydney, Navy-Bethesda, Columbia, New York University, New Jersey, and others). Two are attending or recently graduated from law schools.
teaching activities
- CSS-4990: Undergraduate Research - Spring 2013
- CSS-6941: Special Topics in Crop Science - Spring 2013
- CSS-6980: Graduate Teaching or Extension Experience - Spring 2013
- CSS-7910: Graduate-Level Thesis Research in Crop Science - Spring 2013
- CSS-7970: Graduate Individual Study in Crop and Soil Science - Spring 2013
- CSS-8900: Master's Level Thesis Research in Crop Science - Spring 2013
- CSS-9910: Doctoral-Level Dissertation Research in Crop Science - Spring 2013
- AGSCI-4960: Internship in Agricultural Sciences - Fall 2012
- CSS-6980: Graduate Teaching or Extension Experience - Fall 2012
- CSS-7910: Graduate-Level Thesis Research in Crop Science - Fall 2012
- CSS-7970: Graduate Individual Study in Crop and Soil Science - Fall 2012
- CSS-8900: Master's Level Thesis Research in Crop Science - Fall 2012
- CSS-9910: Doctoral-Level Dissertation Research in Crop Science - Fall 2012
- CSS-4990: Undergraduate Research - Spring 2012
- CSS-6941: Special Topics in Crop Science - Spring 2012
- CSS-6980: Graduate Teaching or Extension Experience - Spring 2012
- CSS-7910: Graduate-Level Thesis Research in Crop Science - Spring 2012
- CSS-7970: Graduate Individual Study in Crop and Soil Science - Spring 2012
- CSS-8900: Master's Level Thesis Research in Crop Science - Spring 2012
- CSS-9910: Doctoral-Level Dissertation Research in Crop Science - Spring 2012
- AGSCI-4960: Internship in Agricultural Sciences - Fall 2011
- CSS-2110: Field Crop Systems - Fall 2011
- CSS-4050: Field Crop Systems - Fall 2011
- CSS-6120: Seed Biology - Fall 2011
- CSS-6980: Graduate Teaching or Extension Experience - Fall 2011
- CSS-7910: Graduate-Level Thesis Research in Crop Science - Fall 2011
- CSS-7970: Graduate Individual Study in Crop and Soil Science - Fall 2011
- CSS-8900: Master's-Level Thesis Research in Crop Science - Fall 2011
- CSS-9910: Doctoral-Level Dissertation Research in Crop Science - Fall 2011
Service
service to the profession
- Golden Key International Honor Society Honorary Member 2002 -
- International Society for Seed Science Member 1999 -
- American Society of Agronomy Faculty Fellow 1996 -
- Crop Science Society of America Faculty Fellow 1995 -
- AMERICAN CHEMICAL SOCIETY Member 1989 -
- New York Academy of Sciences Member 1988 -
- American Association for the Advancement of Science Member 1966 -
- American Institute of Biological Sciences Member 1966 -
- American Society of Agronomy Member 1962 -
- Crop Science Society of America Member 1962 -
- American Oil Chemists' Society Member 2004 - 2008
- Technical Committee, Multistate Project W-1168, “Environmental and Genetic Determinants of Seed Quality and Performance” Member 2003 - 2008
- International Society for Seed Science Officer, President/Elect/Past 1999 - 2008
- American Association of Cereal Chemists Member - 2008
- Rapid Response Team, Crop Science Society of America Member 2002 - 2007
- Crop Science Society of America Rapid Response Team 2002 - 2005
- International Society for Seed Science President Elect 2002 - 2005
- International Society for Seed Science Officer, President/Elect/Past 1999 - 2005
- AI-SPER-0203DF692AB0001088C Member - 2005
- American Society of Plant Biology Member - 2005
- American Association for the Advancement of Science Faculty Fellow - 2004
- Seventh International Workshop of Seeds Member - 2002
- Seventh International Workshop on Seeds Member of Executive Board and General Committee 2002
- Botanical Society of America Member - 2000
- Crop Science Society of America Seed Science Award - 2000
- Society of In Vitro Biology Member - 2000
- American Society of Agronomy Board of Directors 1995 - 1998
- American Society of Agronomy Board of Directors 1995 - 1998
- Crop Science Society of America Board Representative for Division C-4 1995 - 1998
- Crop Science Society of America Board of Directors 1991 - 1993
- Crop Science Society of America Chair, Division C-4 Seed Physiol Prod Techn - 1993
- Gamma Sigma Delta Member - 1993
- Crop Science Society of America Chair elect, Division C-4 Seed Physiol Prod Techn - 1992
reviewer or editor for
Background
education and training
- Ph.D. in Plant Physiology, University of California at Davis 1966
- M.S. in Agronomy, University of California at Davis 1962
- Purdue University 1960
awards and honors
- Award for Excellence in Mentoring Undergraduate Students in Research, 2009
- Medal, with thanks for our collaboration, 2008
- SUNY Chancellor's Award for Excellence in Scholarship and Creative Activities, 2006
- Nominated, Who’s Who Among America’s Teachers, 2004
- AAAS Fellow, 2004
- American Association for the Advancement of Science Fellow, 2004
- Marilyn Emmons Williams Award for significant contributions to undergraduate research at Cornell University, 2002
- Honorary Menber, 2002
- Outstanding Professor at Cornell University for the 2001-2002 Academic Year, 2002
- Recognition for electronic courseware development, 2002
- Honorary Doctorate, 2002
- Honorary Member, 2002
- Honorable Mention, Alpha Phi Foundation Professor of the Year Award, 2001
- Seed Science Award, 2000
- Harry A. MacDonald Award for Excellence in Agronomy, 2000
- ASA Fellow, 1996
- CSSA Fellow, 1995
- Medal from Warsaw Agriculture University, 1992
- Selected for Who’s Who in the East, 1990
- Northeastern Branch ASA Teaching Award, 1989
- IBM Corporation Advanced Education Project Award, 1988
- Medal of Honored Researcher of Agriculture, 1987
- The Sower’s Medal, 1987
- IBM Corporation Award through Project Ezra for instructional software development, 1986
- Shell Plant Science Award for Graduate Teaching, 1979
Other
college
- CALS
research keyword
- crop physiology
- field crops
- health-related components in seeds
- seed biology
- seed composition and performance
- structure of health-related compounds in seeds
- trains society ready students
name prefix
- Professor