NAME: Reid Griffith Palmer

TITLE:
USDA ARS
Research Geneticist
Prof. Dept. of Agronomy
Prof. Dept of Zoology Genetics
ADDRESS:
Department of Agronomy
G301 Agronomy
Iowa State University
Ames, IA 50011
U.S.A.

TELEPHONE: (515) 294-7378

FAX: (515) 294-2299

E-MAIL: rpalmer@iastate.edu

EDUCATION:

University of Toronto (Ontario Agricultural College); major, Agronomy; minor, Botany; B.S.A. 1963.
University of Illinois - Urbana; major, Plant Breeding; minor, Botany; M.S. 1965.
Indiana University - Bloomington; major, Genetics, minors, Plant Physiology, Biochemistry; Ph.D. 1970.

MEMBERSHIP IN PROFESSIONAL

SOCIETIES:

American Society of Agronomy
Crop Science Society of America
American Genetics Association
Genetics Society of America
Genetics Society of Canada
Botanical Society of America
American Soybean Association
Iowa Soybean Association
Iowa Academy of Science

HONOR SOCIETIES:

Member, Sigma Xi
Member, Gamma Sigma Delta

HONORS AND AWARDS:

1966-1970 National Institute of Health Genetics Fellow, Indiana University
1978 Raymond and Mary Baker Agronomy Excellence Award, Iowa State University
1981 Soybean Researchers Recognition Award, American
Soybean Association Imperial Chemical Industries (Americas)
1983 National Production Research Award, American Soybean Association
1984 Fellow - American Society of Agronomy
1984 Fellow - Crop Science Society of America
1988-1989 MASUA Honor Lecturer, representing Iowa State University

PROFESSIONAL ACTIVITIES:

Editorial contributions:

OTHER:

Review, University of California, Davis, plant genetics and plant breeding research, and teaching programs
Member, Soybean Genetics Committee
Member, Soybean Germplasm Advisory Board
Member, North American Lily Society Board of Directors, three terms
Peer Review Panel, USDA Competitive Research Grants, Genetic Mechanisms for Crop Improvement
Secretary-Treasurer, Iowa Chapter of the American Society of Agronomy
Review, CSRS review, University of Arizona, Plant Science Department
Member, Committee to review Federal Register, USDA Guidelines for Biotechnology Research
Member, Advisory Committee for the International Symposium on Recent Advances in Cytogenetics Research, Kurukshetra, India.
Review, CSRS review, West Virginia University, Plant and Soil Science Division
Member, Program Committee: 4th International Symposium on Varietal Identification

MAJOR RESEARCH INTERESTS:

Our research in genetics and cytogenetics of soybean (Glycine max) includes developing aneuploid lines to use in linkage determinations. If soybeans are indeed polyploid, survival of novel chromosome combinations should be feasible. Genetic mutants are being isolated, and are characterized and located on a chromosome by using these aneuploids. Phenotypic and biochemical effects of individual chromosomes are being determined by using these aneuploids.

Developmental studies of microsporogenesis and megasporogenesis of various meiotic mutants involve both light and electron microscopy. These studies provide information on the meiotic process in higher plants and help in selection of sterility systems that could perhaps be used to produce hybrid soybeans for use in breeding techniques. A new method of hybrid soybean production, the Cosegregation Method, utilizes close genetic linkage between a male-sterility locus, Ms6, and a seedling marker locus, W1. This closely-linked marker system allows identification of male-sterile plants at the seedling stage and improves hybrid seed production through greater efficiency and higher yield of hybrid seed per male-sterile plant. The Cosegregation Method was could be used to facilitate S1 and half-sib (population or inbred line as tester) recurrent selection for population improvement of complex agronomic traits by improving evaluation through the elimination of male-sterile plants as seedlings, and by allowing greater control of parental contributions during intermating. Development and use of the Cosegregation Method could assist in the elucidation of the genetic control of complex traits, the identification of lines to improve these traits, the improvement of populations for these traits through the use of recurrent selection, and determination of the agronomic potential of commercial hybrid soybean.

An unstable allele affecting flower color is suspected to be the result of a transposable element. Traditional genetic tests support our views that the instability is the result of a transposon. New mutants occur at a high frequency in this genotype. Nuclear-cytoplasmic interactions between cytoplasmically-inherited yellow mutants and nuclearly-inherited mutants have been identified.

RESEARCH and/or PROFESSIONAL EXPERIENCE:

1963-65 Graduate research assistant
Agronomy Department, University of Illinois
1965-66 Graduate teaching assistant
Botany Department, Indiana University
General Botany - 1 semester
Horticulture - 1 semester
1966-70 NIH Genetics Predoctoral Fellow
Botany Department, Indiana University
1970-present Research Geneticist - Soybeans
U.S. Department of Agriculture
Agricultural Research Service
Stationed at Iowa State University, Ames, Iowa 50011
1970-73 USDA Research Geneticist, Iowa State University, Ames, Iowa 50011
1973-76 USDA Research Geneticist and Assistant Professor of Agronomy, Iowa State University, Ames, Iowa 50011
1976-79 USDA Research Geneticist, Associate Professor of Agronomy and Genetics, Iowa State University, Ames,
Iowa 50011
1979-present USDA Research Geneticist, Professor of Agronomy and Zoology/Genetics, Iowa State University, Ames,
Iowa 50011

GRADUATE STUDENTS:

Monica A. Sheridan
Marc C. Albertsen
Stephen L. Broich
David M. Stelly
Carol L. Winger
Randy C. Shoemaker
Therese M. Curry
Robert A. Graybosch
Chen Long Fang
Louis Forrai
Jefferson J. Gwyn
Peggy Hatfield
Jeffrey Griffin
Huang JinTai
Bradley Hedges
Rhonda Honeycutt
Zhang Fan
Susan Schulte
Sandra Benavente
Laura Sellner
Laurie Amberger
Mark Chamberlin
Telma Pereira
Kim Lewers
Teresa Harper
V. Christine Mahaffey Minor
Chen Xianfeng
Anthony Assibi Mahama
Jin Wei
Wenying Liao
Gamze Karaca
POST DOCTORALS:
Marc C. Albertsen
Xavier Delannay
Robin W. Groose
Bradley R. Hedges
Felix Dakora
Haiyan Lei Grady
Xiang Zhou
 VISITING SCIENTISTS:
Gai Junyi
Mohan Kaul
Sun Huan (3 times)
Yee Chien Chang
Souhei Sawada
Halina Skorupska
Luisa Dalla Costa
Weiping Chen
Hilal Ilarslan
Feng Feng

PUBLICATIONS

Refereed journals:

Palmer, R. G., and H. H. Hadley. 1968. Interspecific hybridization in Glycine, subgenus Leptocyamus. Crop Science 8:557-563.

Palmer, R. G. 1971. Cytological studies of ameiotic and normal maize with reference to premeiotic pairing. Chromosoma 35:233-246.

Hymowitz, T., R. G. Palmer, and H. R. Hadley. 1972. Seed weight, protein, oil, and fatty acid relationships within the genus Glycine. Tropical Agriculture 49:245-250.

Palmer, R. G., and H. E. Heer. 1973. A root tip squash technique for soybean chromosomes. Crop Science 13:389-391.

Palmer, R. G. 1974. Aneuploids in the soybean, Glycine max. Canadian Journal of Genetics and Cytology 16:441-447.

Palmer, R. G. 1974. A desynaptic mutant in the soybean. Journal of Heredity 65:280-286.

Ivers, D. R., R. G. Palmer, and W. R. Fehr. 1974. Anther culture in soybeans. Crop Science 14:891-893.

Palmer, R. G., and H. E. Heer. 1976. Aneuploids from a desynaptic mutant in soybeans [Glycine max (L.)]. Cytologia 41:417-427.

Palmer, R. G. 1976. Chromosome transmission and morphology of three primary trisomics in soybean (Glycine max). Canadian Journal of Genetics and Cytology 18:131-140.

Sheridan, M. A., and R. G. Palmer. 1977. The effect of temperature on an unstable gene in soybeans. Mutant effects at the Ym-18 locus at two temperature levels. Journal of Heredity 68:17-22.

Abernathy, R. H., R. G. Palmer, R. Shibles, and I. C. Anderson. 1977. Histological observations on abscising and retained soybean flowers. Canadian Journal of Plant Science 57:713-716.

Palmer, R. G., M. C. Albertsen, and H. Heer. 1978. Pollen production in soybeans with respect to genotype, environment, and stamen position. Euphytica 27:427-433.

Doerschug, E. B., J. P. Miksche, and R. G. Palmer. 1978. DNA content, ribosomal RNA gene number, and protein content in soybeans. Canadian Journal of Genetics and Cytology 20:531-538.

Palmer, R. G., C. L. Winger, and M. C. Albertsen. 1978. Four independent mutations at the msl locus in soybeans. Crop Science 18:727-729.

Palmer, R. G., M. A. Sheridan, and M. A. Tabatabai. 1979. Effects of genotype, temperature, and illuminance on chloroplast ultrastructure of a chlorophyll mutant in soybeans. Cytologia 44:881-891.

Albertsen, M. C., and R. G. Palmer. 1979. A comparative light-and electron microscope study of microsporogenesis in male sterile (ms1) and male fertile soybeans [Glycine max (L.) Merr]. American Journal of Botany 66:253-265.

Palmer, R. G., and R. C. Payne. 1979. Genetic control of hypocotyl pigmentation among white-flowered soybeans grown in continuous light. Crop Science 19:124-126.

Broich, S. L., and R. G. Palmer. 1980. A cluster analysis of wild and domesticated soybean phenotypes. Euphytica 29:23-32.

Palmer, R. G., and P. N. Mascia. 1980. Genetics and ultrastructure of a cytoplasmically inherited yellow mutant in soybeans. Genetics 95:985-1000.

Stelly, D. M., and R. G. Palmer. 1980. A partially male-sterile mutant line of soybeans, Glycine max (L.) Merr.: Inheritance. Euphytica 29:295-303.

Stelly, D. M., and R. G. Palmer. 1980. A partially male-sterile mutant line of soybeans Glycine max (L.) Merr.: Characterization of msp phenotype variability. Euphytica 29:539-546.

Isely, D., R. W. Pohl, and R. G. Palmer. 1980. Neonotonia verdcourtii (Leguminosae): A new Glycine-like species from Africa. Iowa State Journal of Research 55:157-162.

Palmer, R. G., C. L. Winger, and P. S. Muir. 1980. Genetics and cytology of the ms3 male-sterile soybean. Journal of Heredity 71:343-348.

Broich, S. L., and R. G. Palmer. 1981. Evolutionary studies of soybean: The frequency and distribution of alleles among collections of Glycine max and G. soja of various origin. Euphytica 30:55-64.

Johns, C. Winger, X. Delannay, and R. G. Palmer. 1981. Structural sterility controlled by nuclear mutations in angiosperms. Nucleus 24:97-105.

Johns, C. Winger, and R. G. Palmer. 1982. Floral development of a flower-structure mutant in soybeans, Glycine max (L.) Merr. (Leguminosae). American Journal of Botany 69:829-842.

Delannay, X., and R. G. Palmer. 1982. Four genes controlling root fluorescence in soybean. Crop Science 22:278-281.

Stelly, D. M., and R. G. Palmer. 1982. Variable development in anthers of partially male-sterile msp soybeans. Journal of Heredity 73:101-108.

Gai, Junyi, W. R. Fehr, and R. G. Palmer. 1982. Genetic performance of some agronomic characters in four generations of a backcrossing program involving Glycine max and Glycine soja. Acta Genetica Sinica 9:44-56.

Delannay, X., and R. G. Palmer. 1982. Genetics and cytology of the ms4 male-sterile soybean. Journal of Heredity 73:219-223.

Palmer, R. G., M. C. Albertsen, and C. W. Johns. 1983. Pollen movement to two male-sterile soybean mutants grown in two locations. Journal of Heredity 74:55-57.

Shoemaker, R. C., A. G. Atherly, and R. G. Palmer. 1983. Inhibition of deoxyribonuclease activity associated with soybean chloroplasts. Plant Cell Reports 2:98-100.

Palmer, R. G., and M.L.H. Kaul. 1983. Genetics, cytology, and linkage studies of a desynaptic soybean mutant. Journal of Heredity 74:260-264.

Albertsen, M. C., T. M. Curry, R. G. Palmer, and C. E. LaMotte. 1983. Genetics and comparative growth morphology of fasciation in soybeans [Glycine max (L.) Merr.]. Botanical Gazette 144:263-275.

Delannay, X., D. M. Rodgers, and R. G. Palmer. 1983. Relative genetic contributions among ancestral lines to North American soybean cultivars. Crop Science 23:944-949.

Devine, T. E., R. G. Palmer, and R. 1. Buzzell. 1983. Analysis of genetic linkage in the soybean. Journal of Heredity 74:457-460.

Tilton, V. R., L. W. Wilcox, R. G. Palmer, and M. C. Albertsen. 1984. Stigma, style, and obturator of soybean, Glycine max (L.) Merr. (Leguminosae) and their function in the reproductive process. American Journal of Botany 71:676-686.

Graybosch, R. A., R. L. Bernard, C. R. Cremeens, and R. G. Palmer. 1984. Genetic and cytological studies on a male-sterile, female-fertile soybean mutant. Journal of Heredity 75:383-388.

Nakashima, H., H. T. Horner, and R. G. Palmer. 1984. Histological features of anthers from normal and ms3 mutant soybean. Crop Science 24:735-739.

Shoemaker, R. C., R. G. Palmer, and A. G. Atherly. 1984. Preparation of chloroplast DNA-enriched DNA samples from soybean. Plant Molecular Biology Reporter 2:15-20.

Tilton, V. R., L. W. Wilcox, and R. G. Palmer. 1984. Post-fertilization Wandlabrinthe formation and function in the central cell of soybean, Glycine max (L.) Merr. (Leguminosae). Botanical Gazette 145:334-339.

Gai, Junyi, R. G. Palmer, and W. R. Fehr. 1984. Bloom and pod set in determinate and indeterminate soybeans grown in China. Agronomy Journal 76:979-984.

Palmer, R. G. 1984. Pleiotropy or close linkage of two mutants in soybeans. Journal of Heredity 75:457-462.

Palmer, R. G., and H. E. Heer. 1984. Agronomic characteristics and genetics of a chromosome interchange in soybean. Euphytica 33:651-663.

Stelly, D. M., S. J. Peloquin, R. G. Palmer, and C. F. Crane. 1984. Mayer's hemalum-methyl salicylate: A stain-clearing technique for observations within whole ovules. Stain Technology 59:155-161.

Chen, L.F.O., H. E. Heer, and R. G. Palmer. 1985. The frequency of polyembryonic seedlings and polyploids from ms1 soybean. Theoretical and Applied Genetics 69:271-277.

Shoemaker, R. C., A. Cody, and R. G. Palmer. 1985. Characterization of a cytoplasmically inherited yellow foliar mutant (cyt-Y3) in soybean. Theoretical and Applied Genetics 69:279-284.

Stelly, D. M., and R. G. Palmer. 1985. Relative development of basal, medial, and apical ovules in soybean, Glycine max (L.) Merr. Crop Science 25:877-879.

Palmer, R. G., and S. R. Cianzio. 1985. Conditional lethality involving nuclear and cytoplasmic chlorophyll mutants in soybeans. Theoretical and Applied Genetics 70:349-354.

Gwyn, J. J., R. G. Palmer, and K. Sadanaga. 1985. Morphological discrimination among some aneuploids in soybean [Glycine max (L.) Merr.]: I. Trisomics. Canadian Journal of Genetics and Cytology 27:608-613.

Hatfield, P. M., R. C. Shoemaker, and R. G. Palmer. 1985. Maternal inheritance of chloroplast DNA within the genus Glycine, subgenus soja. Journal of Heredity 76:373-374.

Graybosch, R. A., and R. G. Palmer. 1985. Male sterility in soybean (Glycine max). I. Phenotypic expression of the ms2 mutant. American Journal of Botany 72:1738-1750.

Graybosch, R. A., and R. G. Palmer. 1985. Male sterility in soybean (Glycine max). II. Phenotypic expression of the ms4 mutant. American Journal of Botany 72:1751-1764.

Fuchsman, W. H., and R. G. Palmer. 1985. Conservation of leghemoglobin heterogeneity and structures in cultivated and wild soybean. Canadian Journal of Botany 63:1951-1956.

Chen, L.F.O., and R. G. Palmer. 1985. Cytological studies of triploids and their progeny from male-sterile (ms1) soybean. Theoretical and Applied Genetics 71:400-407.

Shoemaker, R. C., P. M. Hatfield, R. G. Palmer, and A. G. Atherly. 1986. Chloroplast DNA variation in the genus Glycine subgenus Soja. Journal of Heredity 77:26-30.

DuTeau, N. M., R. G. Palmer, and A. G. Atherly. 1986. Fast-growing Rhizobium fredii are poor nitrogen-fixing symbionts of soybean. Crop Science 26:884-889.

Sawada, S., and R. G. Palmer. 1987. Genetic analyses of nonfluorescent root mutants induced by mutagenesis in soybean. Crop Science 27:62-65.

Griffin, J. D., and R. G. Palmer. 1987. Locating the Spl locus on soybean linkage group 1. Journal of Heredity 78:122-123.

Graybosch, R. A., and R. G. Palmer. 1987. Analysis of a male-sterile character in soybeans. Journal of Heredity 78:66-70.

Palmer, R. G., K. E. Newhouse, R. A. Graybosch, and X. Delannay. 1987. Chromosome structure of the wild soybean. Accessions from China and the Soviet Union of Glycine soja Sieb. and Zucc. Journal of Heredity 78:243-247.

Chen, L.F.O., M. C. Albertsen, and R. G. Palmer. 1987. Pollen and coenocytic microspore germination in male-sterile ms1 soybean. Euphytica 36:333-343.

Griffin, J. D., and R. G. Palmer. 1987. Inheritance and linkage studies with five isozyme loci in soybean. Crop Science 27:885-892.

Graybosch, R. A., and R. G. Palmer. 1988. Male sterility in soybean -- An overview. American Journal of Botany 75:144-156.

Groose, R. W., H. D. Weigelt, and R. G. Palmer. 1988. Somatic analysis of an unstable mutation for anthocyanin pigmentation in soybean. Journal of Heredity 79:263-267.

LaMotte, C. E., T. M. Curry, R. G. Palmer, and M. C. Albertsen. 1988. Developmental anatomy and morphology of fasciation in soybean (Glycine max). Botanical Gazette 149:398-407.

Griffin, J. D., and R. G. Palmer. 1989. Genetic studies with two superoxide dismutase loci in soybean. Crop Science 29:968-971.

Honeycutt, R. J., J. W. Burton, R. C. Shoemaker, and R. G. Palmer. 1989. Expression and inheritance of a shriveled seed mutant in soybean. Crop Science 29:704-707.

Honeycutt, R. J., J. W. Burton, R. G. Palmer, and R. C. Shoemaker. 1989. Association of major seed components with a shriveled seed trait in soybean. Crop Science 29:804-809.

Thorson, P. R., B. R. Hedges, and R. G. Palmer. 1989. Linkage group 14 in soybean. Crop Science 29:698-700.

Griffin, J. D., S. L. Broich, X. Delannay, and R. G. Palmer. 1989. Linkage group 12 in soybean. Crop Science 29:80-82.

Gwyn, J. J., and R. G. Palmer. 1989. Morphological discrimination among some aneuploids of soybean [Glycine max (L.) Merr.]. II. Double trisomics, tetrasomics. Journal of Heredity 80:209-213.

Skorupska, H., and R. G. Palmer. 1989. Genetics and cytology of the ms6 male-sterile soybean. Journal of Heredity 80:304-310.

Keim, P., R. C. Shoemaker, and R. G. Palmer. 1989. Restriction fragment length polymorphism diversity in soybean. Theoretical and Applied Genetics 77:786-792.

Benavente, R. S., H. Skorupska, R. G. Palmer, and R. C. Shoemaker. 1989. Embryo sac development in the 'KS' male-sterile, female-sterile soybean [Glycine max (L.) Merr.]. American Journal of Botany 76:1759-1768.

Skorupska, H., M. C. Albertsen, K. D. Langholz, and R. G. Palmer. 1989. Detection of ribosomal RNA genes in soybean by in situ hybridization. Genome 32:1091-1095.

Palmer, R. G., B. R. Hedges, R. S. Benavente, and R. W. Groose. 1989. The w4-mutable line in soybean. Developmental Genetics 10:542-551.

Palmer, R. G., and H. Skorupska. 1990. Registration of a male-sterile line (T295H) of soybean. Crop Science 30:244.

Groose, R. W., S. M. Schulte, and R. G. Palmer. 1990. Germinal reversion of an unstable mutation for anthocyanin pigmentation in soybean. Theoretical and Applied Genetics 79:161-167.

Honeycutt, R. J., K. E. Newhouse, and R. G. Palmer. 1990. Inheritance and linkage studies of a variegated leaf mutant in soybean. Journal of Heredity 81:123-126.

Skorupska, H., and R. G. Palmer. 1990. Additional sterile mutations in soybean [Glycine max (L.) Merr.]. Journal of Heredity 81:296-300.

Hedges, B. R., J. M. Sellner, T. E. Devine, and R. G. Palmer. 1990. Assigning Idhl to linkage group 11 in soybean. Crop Science 30:940-942.

Zhang, F., and R. G. Palmer. 1990. The ms1 mutation in soybean: Involvement of gametes with tetraploid cultivars. Theoretical and Applied Genetics 80:172-176.

Palmer, R. G., R. L. Nelson, R. L. Bernard, and D. M. Stelly. 1990. Linkage and inheritance of three chlorophyll-deficient mutants in soybean. Journal of Heredity 81:404-406.

Palmer, R. G., R. W. Groose, H. D. Weigelt, and J. E. Miller. 1990. Registration of a genetic stock (w4-m w4-m) for unstable anthocyanin pigmentation in soybean. Crop Science 30:1376-1377.

Shoemaker, R. C., L. A. Amberger, R. G. Palmer, L. Oglesby, and J. R. Ranch. 1991. Studies on the effects of 2,4-D on somatic embryogenic response and somaclonal variation among tissue-culture derived soybeans [Glycine max (L.)]. In Vitro: Cellular and Developmental Biology 27P:84-88.

Groose, R. W., and R. G. Palmer. 1991. Gene action for anthocyanin pigmentation in soybean. Journal of Heredity 82:498-501.

Hedges, B. R., and R. G. Palmer. 1991. Tests of linkage of isozyme loci with primary trisomics in soybean. Journal of Heredity 82:494-496.

Cianzio, S. R. and R. G. Palmer. 1992. Genetics of five cytoplasmically inherited yellow foliar mutants in soybean. Journal of Heredity 83:70-73.

Palmer, R. G., S. M. Lim, and B. R. Hedges. 1992. Testing for linkage between the Rxp locus and nine isozyme loci in soybean. Crop Science 32:681-683.

Amberger, L. A., R. G. Palmer, and R. C. Shoemaker. 1992. Analysis of culture-induced variation in soybean. Crop Science 32:1103-1108.

Amberger, L. A., R. C. Shoemaker, and R. G. Palmer. 1992. Inheritance of two independent isozyme variants in soybean plants derived from tissue culture. Theoretical and Applied Genetics 84:600-607.

Palmer, R. G., M. C. Albertsen, H. T. Horner, and H. Skorupska. 1992. Male sterility in soybean and maize: Developmental comparisons. Nucleus 35:1-18.

Palmer, R. G. 1992. Conditional lethality involving a cytoplasmic mutant and chlorophyll-deficient malate dehydrogenase mutants in soybean. Theoretical and Applied Genetics 85:389-393.

Hedges, B. R., and R. G. Palmer. 1992. Inheritance of malate dehydrogenase nulls in soybean. Biochemical Genetics 30:491-502.

Palmer, R. G., and R. W. Groose. 1993. A new allele at the w4 locus derived from the w4-m mutable allele in soybean. Journal of Heredity 84:297-300.

Skorupska, H., N. V. Desanero, and R. G. Palmer. 1993. Possible homeosis in flower development in cultivated soybean [G. max (L.) Merr.]: Morphoanatomy and genetics. Journal of Heredity 84:97-104.

Lark, K. G., J. M. Weisemann, B. F. Matthews, R. G. Palmer, K. Chase, and T. Macalma. 1993. A genetic map of soybean (Glycine max L.) using an interaspecific cross of two cultivars: Minsoy and Noir I. Theoretical and Applied Genetics 86:901-906

Hawbaker, M. S., W. R. Fehr, L. M. Mansur, R. C. Shoemaker, and R. G. Palmer. 1993. Genetic variation for quantitative traits in soybean lines derived from tissue culture. Theoretical and Applied Genetics 84:49-53.

Chamberlin, M. A., H. T. Horner, and R. G. Palmer. 1993. Nuclear size and DNA content of the embryo and endosperm during early seed development in Glycine max (L.) Merr. American Journal of Botany 80:1209-1215.

Chamberlin, M. A., H. T. Horner, and R. G. Palmer. 1993. Nutrition of ovule, embryo sac, and young embryo in soybean: An anatomical and autoradiographic study. Canadian Journal of Botany 71:1153-1168.

Palmer, R. G., and V. C. M. Minor. 1994. Nuclear-cytoplasmic interaction in soybean, Glycine max (L.) Merr. American Journal of Botany 81:997-1003.

Chamberlin, M. A., H. T. Horner, and R. G. Palmer. 1994. Early endosperm, embryo, and ovule development in Glycine max (L.) Merr. International Journal of Plant Sciences 155:421-436.

Skorupska, H. T., N. V. Desanero, and R. G. Palmer. 1994. Developmental hormonal expression of apetalous male-sterile mutation in soybean, Glycine max (L.) Merr. Annals of Biology 10:152-164.

Grady, H., R. G. Palmer, and J. Imsande. 1995. Isoflavonoids in root and hypocotyl of soybean seedlings. American Journal of Botany 82:964-968.

Griffin, J. D., and R. G. Palmer. 1995. Variability of 13 isozyme loci in accessions from the USDA soybean germplasm collections. Crop Science 35:897-904.

Horner, H. T., and R. G. Palmer. 1995. Mechanisms of genic male sterility. Crop Science 35:1527-1535.

St. Martin, S. K., K. S. Lewers, B. R. Hedges, and R. G. Palmer. 1996. A testcross procedure for selecting exotic strains to improve pure-line cultivars. Theoretical and Applied Genetics 92:78-82.

Chen, X. F., and R. G. Palmer. 1996. Inheritance and linkage with the k2 and Mdhl-n loci in soybean. Journal of Heredity 87:433-437.

Kosslak, R. M., J. R. Dieter, R. L. Ruff, M. A. Chamberlin, B. A. Bowen, and R. G. Palmer. 1996. Partial resistance to root-borne infection by Phytophthora sojae in three allelic necrotic root mutants in soybean. Journal of Heredity 87:415-422.

Pereira, T.N.S., H. Ilarslan, and R. G. Palmer. 1996. Embryological study of a female partial-sterile soybean mutant by using confocal scanning laser microscopy. Brazilian Journal of Genetics 19:435-440.

Lewers, K. S., S. K. St. Martin, B. R. Hedges, M. P. Widrlechner, and R. G. Palmer. 1996. Hybrid soybean seed production: A comparison of three methods. Crop Science 36:1560-1567.

Manuscripts in Press:

Ilarlsan, H., H. T. Skorupska, H. T. Horner, and R. G. Palmer. Genetics and cytology of a tissue-culture derived soybean genic male-sterile female-sterile. Journal of Heredity.

Jin, W., H. T. Horner, and R. G. Palmer. Genetics and cytology of a new male-sterile soybean [Glycine max (L.) Merr.]. Journal of Plant Sexual Reproduction.

Lewers, K. S., and R. G. Palmer. Recurrent selection in soybeans. Plant Breeding Reviews.

Pereira, T.N.S., H. Ilarslan, and R. G. Palmer. Genetic and cytological analyses of three lethal ovule mutants in soybean (Glycine max; Leguminosae) Genome.

Pereira, T.N.S., N. R. Lersten, and R. G. Palmer. Genetic and cytological analyses of a partial-sterile mutant (PS-1) in soybean (Glycine max; Leguminosae). American Journal of Botany.

Kosslak, R. M., M. A. Chamberlin, R. G. Palmer, and B. A. Bowen. Programmed cell death in the root cortex of soybean root necrosis mutants. The Plant Journal.

Ilarslan, H., R. G. Palmer, J. Imsande, and H. T. Horner. Quantitative determination of calcium oxalate and oxalate in developing ovules of soybean. American Journal of Botany.

Ilarslan, H., R. G. Palmer, and H. T. Horner. Calcium oxalate crystals in developing soybean ovules. Scanning Microscopy.

Manuscripts submitted:

Hedges, B. R., and R. G. Palmer. Formulae to facilitate mapping of genes with co-dominant markers by using primary trisomics.

Palmer, R. G., and X. F. Chen. Assignment of the Fr3 locus to soybean linkage group 9.

Manuscripts in preparation

Qiu, L., R. G. Palmer, and R. L. Nelson. Comparison of variability of 13 isozyme loci between Chinese and U.S. soybean ancestral lines.

Chen, Z. J., R. G. Palmer, and R. C. Shoemaker. Characterization of a shriveled seed mutant in soybean: Changes in starch, soluble sugar and a amylase.

Chen, Z. J., H. Ilarslan, R. G. Palmer, and R. C. Shoemaker. Characterization of a shriveled seed mutant in soybean: Lipid, fatty acids, and protein.

Lewers, K. S., S. K. St. Martin, B. R. Hedges, and R. G. Palmer. Testcross evaluation of soybean germplasm.

Lewers, K. S., S. K. St. Martin, B. R. Hedges, and R. G. Palmer. Effect of the Dt2 and S alleles on agronomic traits of soybean inbred and hybrid genotypes.

Chen, X. F. and R. G. Palmer. Preferential recombination in repulsion phase and linkage estimation between the k2 and Mdhl-n y20 loci in soybean.