Characterization and distribution of novel alleles of the vernalization gene Vrn-A1 in Chinese wheat(Triticum aestivum L.) cultivars

作     者：Bo Zhang Yangyang Guo Qiru Fan Ruibo Li Dongsheng Chen Xiaoke Zhang Bo Zhang;Yangyang Guo;Qiru Fan;Ruibo Li;Dongsheng Chen;Xiaoke Zhang

作者机构：College of AgronomyNorthwest A&F UniversityYangling 712100ShaanxiChina The Crop Research InstituteNingxia Academy of Agriculture and Forestry ScienceYinchuan 750002NingxiaChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2023年第11卷第3期

页      面：852-862页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：funded by the National Key Research and Development Program of China(2016YFD0101802) the Key Research and Development Project of Shaanxi Province(2019ZDLNY04-05) the National Basic Research Program of China(2014CB138102) the National Natural Science Foundation of China(30971770 and 31671693) 

主　　题：Common wheat Vernalization genes Novel alleles DNA marker Heading time 

摘      要：The ability of wheat to adapt to a wide range of environmental conditions is determined mostly by allelic diversity among genes regulating vernalization ***-1 is a major regulator of this *** this study,two novel alleles of Vrn-A1 were discovered in Chinese cultivars:vrn-A1n was identified in two landraces,Jiunong 2 and Ganchun 16,and Vrn-A1o was detected in *** novel alleles showed a linked duplication in the promoter *** common copy of these two alleles was identical to the recessive allele *** with the recessive allele vrn-A1,the other copy of vrn-A1n contained a 54-bp deletion in the promoter region and the distinct copy of Vrn-A1o contained an11-bp deletion in the promoter *** segregating populations in the greenhouse under nonvernalizing(20–25°C)and long-day(16 h light)conditions,plants with the novel vrn-A1n allele did not head earlier than those with the recessive vrn-A1 ***,plants that were either homozygous or heterozygous for the novel Vrn-A1o allele headed earlier than those with the recessive vrn-A1 *** identify the novel allele with the small-sized product and facilitate screening,a DNA marker for the novel dominant allele Vrn-A1o was *** of the novel-allele distribution showed that two cultivars carrying the vrn-A1n allele were dispersed in the northwestern spring wheat zone,and 12 cultivars carrying the dominant Vrn-A1o allele were widely distributed in the northwestern spring wheat zone,Xinjiang winter and spring wheat zone,Yellow and Huai River valley winter wheat zone,and QinghaiTibetan Plateau spring and winter wheat *** study identifies useful germplasm and a DNA marker for wheat breeding.