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Published online 18 May 2006
Published in Crop Sci 46:1456-1461 (2006)
© 2006 Crop Science Society of America
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SSR Markers Exhibit Trisomic Segregation Distortion in Soybean

J. J. Zoua,*, R. J. Singhd, J. Leec, S. J. Xub and T. Hymowitzd

a Pioneer Hi-Bred International, Inc., Johnston, IA 50131
b USDA-ARS, Northern Crop Science Laboratory, Fargo, ND 58105
c Genetic Resources Division, National Institute of Agricultural Biotechnology, Suweon, 441-701, South Korea
d Department of Crop Sciences, University of Illinois, Urbana, IL 61801


Figure 1
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  		Fig. 1. Segregation ratios of SSR markers in different F2 populations. The linkage groups were according to Cregan et al. (1999). Linkage groups A, B, and C were developed by USDA/Iowa State Univ., the Univ. of Utah, and the Univ. of Nebraska, respectively. Segregation ratios were based on marker classes of Triplo 4: F1: PI 407287.

 

Figure 2
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  		Fig. 2. a, b SSR pattern of trisomic derived F2 individuals amplified using Satt565. T: Triplo 4; S: G. soja PI 407218; F1: F1 hybrid; Arrows point to the specific F2 plant that was homozygous for the least frequent homozygous marker class. a SSR marker analysis of 57 F2 plants from a Triplo 4 F1 hybrid (F1–2 in Fig. 1). G. soja PI 407287 marker class was least represented in F2 population. b SSR marker analysis of 55 F2 plants from a Triplo 4 F1 hybrid (F1–1 in Fig. 1). Triplo 4 marker class was least represented in F2 population.

 

Figure 3
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  		Fig. 3. Diagrammatic presentation of random chromosome segregation showing trisomic segregation of simplex F1 (Aaa).

 




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