The Identification and Mapping of a Tiller Angle QTL on Rice Chromosome 9

文献类型： 外文期刊

第一作者： Chen, Ping

作者： Chen, Ping;Jiang, Ling;Yu, Chuanyuan;Zhang, Wenwei;Wan, Jianmin;Wang, Jiankang;Wan, Jianmin

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期刊名称：CROP SCIENCE （ 影响因子：2.319； 五年影响因子：2.631 ）

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收录情况： SCI

摘要： Tiller angle is an important component of plant architecture in rice even though little is known of its mode of inheritance. A quantitative trait loci (QTL) analysis based on a set of recombinant inbred lines extracted from an indica x japonica cross identified a major effect locus (designated qTA-9a) on chromosome 9, which was expressed in two independent environments. The qTA-9a allele derived from the indica parent IR24 increased tiller angle. This QTL was validated in a set of chromosome segment substitution lines involving the same two parental lines. A high resolution genetic map was constructed from a large secondary F2 population and anchored to the genomic sequence of rice. The QTL was narrowed to a 65-kb physical region, inclusive of eight putative genes. We have provided the basis for positional cloning of qTA-9a and have developed markers for a major tiller angle QTL.

分类号： S5

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