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

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (20) Citing Articles via Google Scholar Google Scholar Articles by Li, Z. Articles by Nelson, R. L. Search for Related Content PubMed Articles by Li, Z. Articles by Nelson, R. L. Agricola Articles by Li, Z. Articles by Nelson, R. L. Related Collections Soybean Crop Genetics

PLANT GENETIC RESOURCES

Genetic Diversity among Soybean Accessions from Three Countries Measured by RAPDs

^a Dep. of Crop Sciences, 1101 W. Peabody Dr., Univ. of Illinois, Urbana, IL 61801
^b USDA-Agricultural Research Service, Soybean/Maize Germplasm, Pathology, and Genetics Research Unit, Dep. of Crop Sciences, 1101 W. Peabody Dr., Univ. of Illinois, Urbana, IL 61801

* Corresponding author (rlnelson{at}uiuc.edu)

Soybean [Glycine max (L.) Merr.] was domesticated in China but has a long history of cultivation on the Korean peninsula and in Japan. All three areas are considered important sources of soybean germplasm. The objectives of this study were to evaluate the genetic variation in soybean within and among China, S. Korea, and Japan by means of 120 accessions from eight Chinese and three S. Korean provinces, and three Japanese districts; and to relate genetic diversity patterns to geographical regions. Genetic relationships were estimated by 115 random amplified polymorphic DNA (RAPD) markers with simple matching coefficients expressed as Euclidean distances. Hierarchical and nonhierarchical cluster analyses as well as principal component analysis were used to define relationships among the genotypes. The results indicate that the mean genetic distance within China is much larger than that within Japan or S. Korea, but smaller than that between China and Japan or S. Korea. Cluster and principal component analyses almost completely separated the accessions from China from those of Japan and S. Korea, but could not distinguish between the accessions from Japan and S. Korea. These results are consistent with previous research using enzymes and morphological data to classify soybean germplasm from Asia. The groups formed by cluster analysis were mainly based on the frequencies of RAPD fragments among accessions and generally reflected the geographical regions of origin. No clear relationship was found between latitude and genetic diversity among accessions from these countries. Although the soybean accessions from Japan and S. Korea originally came from China, these data indicate that current accessions from Japan and S. Korea are genetically very distinct from those from China and more similar to each other.

Abbreviations: AMOVA, Analysis of molecular variance • HHH, Huang Huai Hai region in east central China • MG, maturity group • NE, northeast region in China • PCR, polymerase chain reaction • RAPD, random amplified polymorphic DNA • SMC, simple matching coefficient • UPGMA, unweighted pair group method using arithmetic average

This article has been cited by other articles:

				D. M. Nichols, W. Lianzheng, Y. Pei, K. D. Glover, and B. W. Diers Variability among Chinese Glycine soja and Chinese and North American Soybean Genotypes Crop Sci., May 31, 2007; 47(3): 1289 - 1298. [Abstract] [Full Text] [PDF]

				D. L. Hyten, Q. Song, Y. Zhu, I.-Y. Choi, R. L. Nelson, J. M. Costa, J. E. Specht, R. C. Shoemaker, and P. B. Cregan Impacts of genetic bottlenecks on soybean genome diversity PNAS, November 7, 2006; 103(45): 16666 - 16671. [Abstract] [Full Text] [PDF]

				J. Zhang, Y. Lu, R. G. Cantrell, and E. Hughs Molecular Marker Diversity and Field Performance in Commercial Cotton Cultivars Evaluated in the Southwestern USA Crop Sci., June 24, 2005; 45(4): 1483 - 1490. [Abstract] [Full Text] [PDF]

				Y. Chen and R. L. Nelson Relationship between Origin and Genetic Diversity in Chinese Soybean Germplasm Crop Sci., June 24, 2005; 45(4): 1645 - 1652. [Abstract] [Full Text] [PDF]

				Y. Chen and R. L. Nelson Genetic Variation and Relationships among Cultivated, Wild, and Semiwild Soybean Crop Sci., January 1, 2004; 44(1): 316 - 325. [Abstract] [Full Text] [PDF]