Using yield quantitative trait locus targeted SSR markers to study the relationship between genetic distance and yield heterosis in upland cotton (Gossypium hirsutum)

文献类型： 外文期刊

第一作者： Xue Li

作者： Xue Li;Kashif Shahzad;Liping Guo;Tingxiang Qi;Xuexian Zhang;Hailin Wang;Huini Tang;Xiuqin Qiao;Jinfa Zhang;Jianyong Wu;Chaozhu Xing

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关键词： Gossypium hirsutum; heterosis; genetic distance; yield-related SSR; yield

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： 2019 年 138 卷 1 期

页码：

收录情况： SCI

摘要： The objective of this study was to examine the relationship between heterosis and genetic distance in upland cotton (Gossypium hirsutum L.). Heterosis in the different environments was evaluated and the relationship between heterosis and genetic distance (GD) was determined based on SSR markers for yield quantitative trait loci (QTL). Yields of seed cotton and lint showed a linear relationship with mid-parent heterosis (MPH) and better-parent heterosis (BPH). The variation in heterosis for other traits and their correlation with GD may be due to environmental factors or the effort of QTLs tested in the present study may vary in different environments. The present findings provide a foundation for heterotic grouping of parental lines and breeding of new cotton hybrids with improved seed cotton yield. This study calls for more research with stable QTLs as well as advance molecular marker techniques may be used in predicting yield heterosis in a more precise and reliable manner.

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