HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Delannay, X. Articles by Palmer, R. G. Search for Related Content PubMed Articles by Delannay, X. Articles by Palmer, R. G. Agricola Articles by Delannay, X. Articles by Palmer, R. G.

Relative Genetic Contributions Among Ancestral Lines to North American Soybean Cultivars¹

An examination of the pedigrees for 158 USA and Canadian soybean [Glycine max (L.) Merr.] cultivars of hybrid origin indicated that the North American soybean gene pool could be traced to only 50 plant introductions. Evaluations were made of the relative genetic contributions of those introductions to the cultivars released in the northern and southern gene pools of North America over four time periods, i.e., before 1951, 1951–1960, 1961–1970, and 1971–1981. Although more introductions have been used in recent times, a few constitute an increasingly greater proportion of the genetic base for our modern cultivars. Ten introductions contributed, collectively, more than 80% of the northern gene pool, while only seven contributed the same share to the southern gene pool. Furthermore, many of the predominant introductions originated from the same geographic area. These data confirm previous estimates of the narrowness of the genetic base for present-day soybean cultivars. Examples, however, are provided describing the recent use of new introductions in the development of soybean cultivars.

Key Words: Glycine max (L.) Merr. • Germplasm

² Research specialist, Monsanto Agric. Products Co., St. Louis, MO 63167 (formerly postdoctoral research associate, Iowa State Univ.); assistant professor of agronomy, Kansas State Univ., Manhattan, KS 66506 (formerly predoctoral research associate, Iowa State Univ.); and research geneticist, USDA-ARS, and Deps. of Agronomy and Genetics, Iowa State Univ., Ames, IA 50011.

Received for publication August 23, 1982.

This article has been cited by other articles:

				D. Li, T. W. Pfeiffer, and P. L. Cornelius Soybean QTL for Yield and Yield Components Associated with Glycine soja Alleles Crop Sci., March 19, 2008; 48(2): 571 - 581. [Abstract] [Full Text] [PDF]

				J. S. C. Smith, D. N. Duvick, O. S. Smith, M. Cooper, and L. Feng Changes in Pedigree Backgrounds of Pioneer Brand Maize Hybrids Widely Grown from 1930 to 1999 Crop Sci., November 1, 2004; 44(6): 1935 - 1946. [Abstract] [Full Text] [PDF]

				M. D. Smalley, W. R. Fehr, S. R. Cianzio, F. Han, S. A. Sebastian, and L. G. Streit Quantitative Trait Loci for Soybean Seed Yield in Elite and Plant Introduction Germplasm Crop Sci., March 1, 2004; 44(2): 436 - 442. [Abstract] [Full Text] [PDF]

				Y. L. Zhu, Q. J. Song, D. L. Hyten, C. P. Van Tassell, L. K. Matukumalli, D. R. Grimm, S. M. Hyatt, E. W. Fickus, N. D. Young, and P. B. Cregan Single-Nucleotide Polymorphisms in Soybean Genetics, March 1, 2003; 163(3): 1123 - 1134. [Abstract] [Full Text] [PDF]

				C. H. Sneller Impact of Transgenic Genotypes and Subdivision on Diversity within Elite North American Soybean Germplasm Crop Sci., January 1, 2003; 43(1): 409 - 414. [Abstract] [Full Text] [PDF]

				K. D. Burnham, D. M. Francis, A. E. Dorrance, R. J. Fioritto, and S. K. St. Martin Genetic Diversity Patterns among Phytophthora Resistant Soybean Plant Introductions Based on SSR Markers Crop Sci., March 1, 2002; 42(2): 338 - 343. [Abstract] [Full Text] [PDF]

				B. K. Cornelious and C. H. Sneller Yield and Molecular Diversity of Soybean Lines Derived from Crosses of Northern and Southern Elite Parents Crop Sci., March 1, 2002; 42(2): 642 - 647. [Abstract] [Full Text] [PDF]

				J. M. Narvel, L. R. Jakkula, D. V. Phillips, T. Wang, S.-H. Lee, and H. R. Boerma Molecular Mapping of Rxp Conditioning Reaction to Bacterial Pustule in Soybean J. Hered., May 1, 2001; 92(3): 267 - 270. [Abstract] [Full Text] [PDF]

				P. Krishnan, V. T. Sapra, K. M. Soliman, and A. Zipf FISH Mapping of the 5S and 18S-28S rDNA Loci in Different Species of Glycine J. Hered., May 1, 2001; 92(3): 295 - 300. [Abstract] [Full Text] [PDF]

				Z. Cui, T. E. Carter Jr., and J. W. Burton Genetic Diversity Patterns in Chinese Soybean Cultivars Based on Coefficient of Parentage Crop Sci., November 1, 2000; 40(6): 1780 - 1793. [Abstract] [Full Text] [PDF]

				X. Zhou, T. E. Carter Jr., Z. Cui, S. Miyazaki, and J. W. Burton Genetic Base of Japanese Soybean Cultivars Released during 1950 to 1988 Crop Sci., November 1, 2000; 40(6): 1794 - 1802. [Abstract] [Full Text] [PDF]