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Identification and Validation of a Novel Major QTL Controlling Leaf Pubescence in the Chinese Wheat Landrace Baimaomai.

文献类型： 外文期刊

作者： Liu, Zehou 1 ; Wang, Qin 1 ; Wan, Hongshen 1 ; Yang, Fan 1 ; Li, Shizhao 1 ; Yang, Manyu 1 ; Luo, Jiangtao 1 ; Zheng, Jia 1 ;

作者机构： 1.Sichuan Acad Agr Sci, Crop Res Inst, Key Lab Wheat Biol & Genet Improvement Southweste, Minist Agr & Rural Affairs, Chengdu 610066, Peoples R China

2.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China

关键词： wheat; landrace; Baimaomai; leaf pubescence; QTL

期刊名称：AGRONOMY-BASEL （ 影响因子：3.417； 五年影响因子：3.64 ）

ISSN：

年卷期： 2021 年 11 卷 11 期

页码：

收录情况： SCI

摘要： Leaf pubescence is an important trait closely associated with plant adaptability to specialized habitats. Baimaomai (BMM) is a wheat (Triticum aestivum L.) landrace originating from the high-altitude, drought-prone environment of Sichuan Province, China with long, dense leaf pubescence. A population of 234 recombinant inbred lines (F-10) developed from the cross between Chuanmai104 (CM104), which lacks leaf pubescence, and BMM with pubescent leaves, was used to conduct a phenotypic evaluation of leaf pubescence. Three quantitative trait loci (QTLs) were detected on chromosome arms 7BS, 3DL and 3AL using a high-density wheat 50K single-nucleotide polymorphism array in four environments. The QTLs were designated QLp.saas-7BS, QLp.saas-3DL and QLp.saas-3AL. QLp.saas-3AL, derived from BMM, and QLp.saas-3DL, derived from CM104, were new minor-effect loci. QLp.saas-7BS, derived from BMM, was a novel major-effect locus detected in all environments and was localized in a 0.48 Mb interval on chromosome arm 7BS based on the wheat 'Chinese Spring' reference genome. QLp.saas-7BS explained up to 40.77% of the total phenotypic variance. KASP markers tightly linked to QLp.saas-7BS were developed and verified. The present results provide valuable information for further fine mapping, cloning, and marker-assisted selection with QLp.saas-7BS in wheat.

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