Chin Bull Bot ›› 2011, Vol. 46 ›› Issue (6): 632-641.doi: 10.3724/SP.J.1259.2011.00632

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Identification of Plant Height Quantitative Trait Loci with Single Segment Substituted Lines in Rice

Jinyan Zhu1, Chaoqiu Ji3, Yong Zhou2, Jun Wang1, Zhongde Wang2, Jie Yang1, Fangjun Fan1, Guohua Liang2*, Weigong Zhong1*   

  1. 1Nanjing Branch of Chinese National Center for Rice Improvement, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China

    2Key Laboratory of Plant Functional Genomics of Ministry of Education, Yangzhou University, Yangzhou 225009, China

    3Jiangsu Oilfield Farm, Hongze 211706, China
  • Received:2011-07-20 Revised:2011-09-21 Online:2011-11-18 Published:2011-11-01
  • Contact: Guohua Liang,Weigong Zhong;

Abstract: Plant height is a typical quantitative trait and can easily be influenced by genetic background and environmental factors. Single-segment-substitution lines (SSSLs) can effectively reduce the interference of the genetic background. We developed a set of genome-wide SSSLs carrying Nipponbare introgression segments in a background of Guangluai 4. Quantitative trail loci (QTL) analysis involved one-way ANOVA and Dunnett’s test for comparing SSSLs and the recurrent parent Guangluai 4 (P≤0.001). We detected 24 QTLs for plant height distributed on 11 rice chromosomes, except chromosome 10, of which 3 had a negative effect and the others a positive effect. The additive effect of these QTLs ranged from –6.5 to 31.74, with additive effect percentages –8.81% to 41.96%. These results provide useful information for exploring and using new dwarf or semi-dwarf resources.

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