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Acta Agron Sin ›› 2006, Vol. 32 ›› Issue (04): 509-514.

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Analysis of QTL for Plant Height at Different Developmental Stages in Soybean

SUN De-Sheng; LI Wen-Bin*; ZHANG Zhong-Chen; CHEN Qing-Shan and YANG Qing-Kai   

  1. Soybean Research Institute, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
  • Received:2005-03-24 Revised:1900-01-01 Online:2006-04-12 Published:2006-04-12

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Abstract:

143 recombinant inbred lines (RILs) derived from a cross between soybean cultivars Charleston and Dongnong 594 were used to construct a genetic linkage map covering 3 067.28 cM with 20 linkage groups including 161 simple sequence repeats (SSRs) and 35 random amplified polymorphism DNAs (RAPDs) markers. The developmental behavior of plant height was investigated by unconditional and conditional QTL mapping methods. The result indicated that the number and genetic effects of QTLs significantly confessing plant height of soybean were different at different measuring stages. 28 unconditional and 21 conditional QTLs were identified for plant height. Number of QTLs confessing plant height was increased continuously and genetic effects accumulated quickly at middle measuring stages. Therefor the changes in number and genetic effects of QTLs indicated that the genes controlling plant height show a selective expression at different developmental stages.

Key words: Soybean, Plant height, Developmental stage, QTLs

CLC Number: 

  • S565
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