小麦优良品种 "川麦104 "谷粒性状 QTL 的鉴定和稳定性

IF 1.6 4区 农林科学 Q2 AGRONOMY
Zehou Liu, Hao Tang, Yuanyuan Lin, Xiaojiang Guo, Huixue Dong, Li Cai, Ying Liu, Qin Wang, Hongshen Wan, Fan Yang, Ning Yang, Jirui Wang, Jun Li, Wuyun Yang
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引用次数: 0

摘要

川麦 104(CM104)是目前中国西南地区单位面积产量最高的小麦(Triticum aestivum L.)优良品种,在小麦生产中发挥着至关重要的作用。优质稳定的籽粒性状是确保 CM104 在不同产区高产稳产的重要因素。本研究对2018-2022年中国五省19个环境中采样的CM104的6个籽粒性状进行了评价。这些性状包括千粒重、粒长、粒宽、粒长宽比、粒周长和粒表面积。基于CM104与陆稻品种白毛麦(BMM)杂交产生的重组近交系(F9-10)群体,确定了与谷粒性状相关的15个数量性状位点(QTLs),其中9个和6个QTLs分别来自CM104和BMM。从 CM104 中衍生的三个主要多效性 QTL,即 QTL10(粒围、粒表面积)、QTL11(粒长、粒围)和 QTL12(粒长、粒围),在多种环境中均有显著而稳定的表达,分别解释了 3.34-5.06%、5.32-6.50% 和 6.00-12.13% 的表型变异。据推测,多基因的金字塔作用有助于 CM104 谷粒性状在不同环境中的稳定性。这些结果为今后提高小麦产量及其稳定性提供了依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Identification and stability of QTLs for grain traits in the elite wheat variety ‘Chuanmai104’

Identification and stability of QTLs for grain traits in the elite wheat variety ‘Chuanmai104’

Chuanmai104 (CM104), an elite wheat (Triticum aestivum L.) variety that currently produces the highest yield per unit area in southwestern China, plays a critical role in wheat production. The high quality and stability of grain traits are important factors that ensure the high, stable yields of CM104 in different production areas. In this study, six grain traits of CM104 sampled from 19 environments in five provinces of China during 2018–2022 were evaluated. The traits comprised thousand-kernel weight, grain length, grain width, grain length–width ratio, grain circumference, and grain surface area. Fifteen quantitative trait loci (QTLs) associated with the grain traits were identified based on a recombinant inbred lines (F9–10) population derived from the cross between CM104 and the landrace Baimaomai (BMM), nine and six QTLs derived from CM104 and BMM, respectively. Three mainly pleiotropic QTLs derived from CM104, namely QTL10 (grain circumference, grain surface area), QTL11 (grain length, grain circumference), and QTL12 (grain length, grain circumference), were expressed significantly and stably in multiple environments, and explained 3.34–5.06%, 5.32–6.50%, and 6.00–12.13% of the phenotypic variation, respectively. The pyramiding of multiple genes is hypothesized to have contributed to the stability of the CM104 grain traits in different environments. The results provide a basis for future improvement of yield and its stability in wheat.

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来源期刊
CiteScore
3.40
自引率
6.20%
发文量
92
审稿时长
6-12 weeks
期刊介绍: This journal publishes original papers presenting new scientific results on breeding, genetics, physiology, pathology and production of primarily wheat, rye, barley, oats and maize.
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