中文摘要：

花丝活力长短在一定程度上影响着玉米制种产量和杂交种产量,对玉米生产具有重要意义。为阐明玉米花丝活力的遗传机理,本研究利用来自优良玉米杂交种农大108的一套203个重组近交系群体,通过1年3点的田间试验对玉米花丝活力进行了遗传分析,结果发现同一基因型的花丝活力在不同环境中存在较大的差异。利用复合区间作图法定位了8个不同位点的QTL,分布在玉米第3、第5、第6、第7和第8染色体上,单个QTL可解释花丝活力表型变异的11.06%～20.82%,该研究为玉米花丝活力的选择提供了一定的理论依据。

英文摘要：

Silk vigor is an important trait that effects hybrid seed production and hybrid production in maize. For dissecting the genetic basis of silk vigor, a set of 203 recombinant inbred lines （RIL） population, which derived from the elite hybrid Nongda 108 （Huang C x Xu 178）, were evaluated at three environments. The results showed that silk vigor of genotype had significant distinct at different environments. Eight different QTL were detected for silk vigor using composite interval mapping method, and located on chromosomes 3, 5, 6, 7, and 8, with 11.06%-20.82% phenotypic contribution of silk vigor, this study can aid to seed vigor selection in maize breeding.