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Gene Mapping of Brachytic Stem and Its Effect on Main Agronomic Traits in Soybean

中国农业科学（英文版）2005，Vol.4Issue(10)：728-732,5.

Gene Mapping of Brachytic Stem and Its Effect on Main Agronomic Traits in Soybean

作者信息

1. National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, P.R. China;National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, P.R. China;National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, P.R. China;National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, P.R. China;National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, P.R. China;National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, P.R. China
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摘要

Abstract

Brachytic stem is a major trait in plant type of soybean and its yield potential may be higher under high population when compared with normal stem. In the present investigation, 152 recombinant inbred line (RIL) families derived from the cross of Bogao (normal stem) and Nannong 94-156 (brachytic stem) were used to map genes and QTLs of three plant type traits and to identify the effects of brachytic stem on agronomic traits such as yield. The primary results indicated that brachytic stem (sb) and determinate growth habit (dtl) were mapped on linkage groups B2 and L, three major QTLs related to plant height were detected and mapped on linkage group L near dtl, another minor QTL was mapped near sb on linkage group B2-1. Lines with brachytic stem had shorter plant height, lower biomass, yield, harvest index and pods per plant, and essentially no differences in days to maturity and 100-seed weight when compared with normal stem lines. It was obvious that the effect of brachytic stem on yield was due to the decreased height, biomass and harvest index.

关键词

Brachytic stem/Gene mapping/Quantitative trait loci (QTL)/Agronomic trait/Soybean

Key words

Brachytic stem/Gene mapping/Quantitative trait loci (QTL)/Agronomic trait/Soybean

分类

农业科技

引用本文复制引用

..Gene Mapping of Brachytic Stem and Its Effect on Main Agronomic Traits in Soybean[J].中国农业科学（英文版）,2005,4(10):728-732,5.

基金项目

This work was supported by the National 973 Program (2004CB7206) and National 863 Program of China (2002AA211052), and Jiangsu Provincial Natural Science Foundation (BK2004045). （2004CB7206）

中国农业科学（英文版）

ISSN：2095-3119

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