QTL mapping of coleorhiza length in maize (Zea mays L.) under two germination environmental conditions

文献类型： 外文期刊

第一作者： Jiang, Xuwen

作者： Jiang, Xuwen;Tian, Baohua;Zhang, Weimin;Wang, Guoying;Wang, Jianhua;Jiang, Xuwen;Tian, Baohua;Zhang, Weimin;Wang, Guoying;Wang, Jianhua;Wang, Guoying

作者机构：

关键词： maize;coleorhiza length;seed germination;SSR;QTL

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

ISSN： 0179-9541

年卷期： 2011 年 130 卷 6 期

页码：

收录情况： SCI

摘要： In our present study, using molecular marker technology, we aimed to identify the genetic factors controlling the length of coleorhiza during seed germination based on a population of recombinant inbred lines (RILs) derived from Xinzi517 x B73. The genetic linkage map was constructed with 255 simple sequence repeat markers, which covered 2399 cM of maize genome with an average mapping distance of 9.4 cM. We detected a total of 10 putative quantitative trait loci (QTLs) using composite interval mapping, among which six QTLs were detected on chromosomes 1, 2, 7 and 9 (10 degrees C, 28 day), whereas four QTLs were detected on chromosomes 1, 2, 3 and 9 (25 degrees C, 7 day). The percentage of phenotypic variance (R-2) explained by QTL ranged from 5.18 to 16.67 (10 degrees C, 28 day) and 6.73-11.46 (25 degrees C, 7 day), respectively. These results provided the foundation for detecting additional QTL and discovering more favourable alleles for high vigour seed of maize in future study.

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