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Genome-wide selection and introgression of Chinese rice varieties during breeding

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Title Genome-wide selection and introgression of Chinese rice varieties during breeding
 
Creator Jinyue Ge
Junrui Wang
Hongbo Pang
Fei Li
Danjing Lou
Weiya Fan
Ziran Liu
Jiaqi Li
Danting Li
Baoxuan Nong
Zongqiong Zhang
Yanyan Wang
Jingfen Huang
Meng Xing
Yamin Nie
Xiaorong Xiao
Fan Zhang
Wensheng Wang
Jianlong Xu
Sung Ryul Kim
Xiaoming Zheng
 
Subject rice
varieties
breeding methods
population genetics
genetics
molecular biology
 
Description China is the largest rice-producing country, but the genomic landscape of rice diversity has not yet been clarified. In this study, we re-sequence 1070 rice varieties collected from China (400) and other regions in Asia (670). Among the six major rice groups (aus, indica-I, indica-II, aromatic, temperate japonica, and tropical japonica), almost all Chinese varieties belong to the indica-II or temperate japonica group. Most Chinese indica varieties belong to indica-II, which consists of two subgroups developed during different phases of rice breeding. The genomic segments underlying the differences between these subgroups span 36.32 Mb. The Chinese japonica rice varieties fall into the temperate japonica group, consisting of two subgroups based on their geographical distribution. The genomic segments underlying the differences between these subgroups span 27.69 Mb. These differentiated segments in the Chinese indica varieties span 45 genes with nonsynonymous mutations that are closely related to variations in plant height and grain width. Fifty-four genes with nonsynonymous mutations are associated with the differences in heading date between the two Chinese japonica subgroups. These findings provide new insights into rice diversity in China that will facilitate the molecular breeding.
 
Date 2022-05
2023-01-03T12:01:21Z
2023-01-03T12:01:21Z
 
Type Journal Article
 
Identifier Ge, Jinyue, Junrui Wang, Hongbo Pang, Fei Li, Danjing Lou, Weiya Fan, Ziran Liu et al. "Genome-wide selection and introgression of Chinese rice varieties during breeding." Journal of Genetics and Genomics 49, no. 5 (2022): 492-501.
1873-5533
https://hdl.handle.net/10568/126478
https://doi.org/10.1016/j.jgg.2022.02.025
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format 492-501
 
Publisher Elsevier
 
Source Journal of Genetics and Genomics