Genetic Interaction of Hd1 with Ghd7, DTH8 and Hd2 Largely Determines Eco-Geographical Adaption of Rice Varieties in Southern China  

作　　者：ZHANG Zhenhua ZHU Yujun WANG Shilin FAN Yeyang ZHUANG Jieyun 

机构地区：[1]State Key Laboratory of Rice Biology/Chinese National Center for Rice Improvement,China National Rice Research Institute,Hangzhou 310006,China

出　　处：《Rice science》2021年第2期114-118,共5页水稻科学（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.31571637);the Agricultural Science and Technology Innovation Program of the Chinese Academy of Agricultural Science(CAAS-ASTIP-2013-CNRRI).We thank the National Medium Rice Genebank at the China National Rice Research Institute for providing rice varieties.

摘　　要：Although cultivated rice originated from the tropical region,a long process of domestication and human selection has enabled cultivated rice to grow in a wide range of geographical regions.Diversification of photoperiodic flowering provides a foundation for this diverse adaptation.Intensive studies have focused on elucidating how japonica varieties lost photoperiodic sensitivity(PS)to expand their cultivation areas to high latitudes,where rice is grown in a short season when day-length is long(Fujino et al,2013;Naranjo et al,2014;Gomez-Ariza et al,2015;Li et al,2015,2018;Goretti et al,2017;Ye et al,2018).By contrast,limited attention has been paid to the genetic architecture of heading date(HD)variation among varieties in middle and low latitudes.The southern China rice region,located in middle and low latitudes,occupies the most important rice cultivation region in China.This region is predominantly planted with indica varieties,which presents a rich diversity of regional and seasonal adaptations.In the present study,improved varieties and landraces used in this region were analyzed for allelic variations of 12 cloned QTLs controlling HD,as well as for the genotypic effects of these genes on HD and PS.Our objective was to clarify predominant genetic factors influencing ecogeographical adaption of rice varieties in southern China by comparing improved varieties with landraces.

关 键 词：CULTIVATED planted HEADING 

分 类 号：S511[农业科学—作物学]