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当前位置: 首页 > 文章 > A differentially methylated region of the ZmCCT10 promoter affects flowering time in hybrid maize 作物学报(英文版) 2023,11 (5)
Position: Home > Articles > A differentially methylated region of the ZmCCT10 promoter affects flowering time in hybrid maize The Crop Journal 2023,11 (5)

A differentially methylated region of the ZmCCT10 promoter affects flowering time in hybrid maize

作  者：
Zhiqiang Zhou;Xingrong Lu;Chaoshu Zhang;Mingshun Li;Hao Zhang;Degui Zhang;Hongjun Yong;Jienan Han;Xinhai Li;Jianfeng Wen
单  位：
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, Chin;Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
关键词：
Epigenetic;Flowering time;Hybrid performance;Maize;QT
摘  要：
Flowering time (FT) is a key maize domestication trait, variation in which allows maize to grow in a wide range of latitudes. Although previous studies have investigated the genetic control of FT-related traits per se, few studies of FT hybrid performance have been published. We characterized the genomic architecture associated with hybrid performance for FT in a hybrid panel by testcrossing Chang 7-2 with 328 Ye478 x Qi319 recombinant inbred lines (RILs). We identified 11 quantitative trait loci (QTL) for hybrid performance in FT-related traits, including a major QTL qFH10 that controls hybrid performance and heterosis in a summer maize-growing region. However, this locus acts in regulating FT traits per se only in a spring maize-growing region. We validated ZmCCT10 as a candidate gene for qFH10 and found that differences between hybrids and their parental lines in DNA methylation in the differentially methylated region (DMR, -700 to -1520) of the ZmCCT10 promoter affected gene expression pattern and thereby FT in the summer maize-growing region.(c) 2023 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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