Molecular dissection of developmental behavior of tiller number and the relationship with effective panicle using indica-japonica introgression lines in rice
文献类型: 外文期刊
第一作者: Bian, Jianmin
作者: Bian, Jianmin;Zhu, Guoqiang;Zhu, Changlan;Peng, Xiaosong;Li, Cuijuan;He, Xiaopeng;Chen, Xiaorong;Fu, Junru;Hu, Lifang;Ouyang, Linjuan;He, Haohua;Bian, Jianmin;Zhu, Guoqiang;Zhu, Changlan;Peng, Xiaosong;Li, Cuijuan;He, Xiaopeng;Chen, Xiaorong;Fu, Junru;Hu, Lifang;Ouyang, Linjuan;He, Haohua;Bian, Jianmin;Zhu, Guoqiang;Zhu, Changlan;Peng, Xiaosong;Li, Cuijuan;He, Xiaopeng;Chen, Xiaorong;Fu, Junru;Hu, Lifang;Ouyang, Linjuan;He, Haohua;Shen, Xianhua;Yan, Song;Shen, Xianhua;Yan, Song;Shen, Xianhua;Yan, Song
作者机构:
关键词: Rice (Oryza sativa L.);Tiller number;Effective panicle;Introgression line;Main-effect QTLs
期刊名称:MOLECULAR BREEDING ( 影响因子:2.589; 五年影响因子:2.75 )
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收录情况: SCI
摘要: To analyze the developmental behavior of tiller number and the relationship with effective panicle for indica and japonica in rice, an introgression line (IL) population of indica variety Habataki in the background of japonica cultivar Sasanishiki was applied for these traits across three environments. The analysis of variance showed that tiller number was highly influenced by growing environment, and 21 and 10 quantitative trait loci (QTLs) for tiller number and effective panicle were observed, respectively. Different QTLs apparently controlled tiller number at different developmental stages, indicating that QTLs for tiller number might be differentially spatially and temporally expressed at different development stages. Seven of the 10 loci for effective panicle were located in the same intervals within the tiller number QTLs, suggesting that the traits are related and this is consistent with the correlations detected between phenotypic variables, especially the correlation at the stage around heading. The results showed that tiller number around the heading period has a strong promoting effect on the formation of effective panicle. Furthermore, two new key tiller number QTLs, qTN2.3 and qTN4.2, stably expressed at the stage around heading. The genetic effect of qTN4.2 was further verified by a secondary population. These QTLs could provide useful information for marker-assisted selection in improving effective panicle with regard to tiller number. This paper was focused on the comprehensive study of dynamic tiller number at the whole genome level using indica-japonica ILs, which will represent useful genetic resources for indica-japonica tiller number molecular breeding.
分类号: Q94
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