期刊
PLANT BIOTECHNOLOGY JOURNAL
卷 18, 期 1, 页码 119-128出版社
WILEY
DOI: 10.1111/pbi.13177
关键词
major Chinese cultivated rice varieties; Hd1 preponderant allele; association analysis; heading date; yield- and quality-related traits improvement
资金
- National Natural Science Foundation of China [91735303, 31661143006, 31801337]
- Ministry of Agriculture of China [2016ZX08009003-001]
- 'Science and Technology Innovation Project' of the Chinese Academy of Agriculture Sciences
Heading date 1 (Hd1) is an important gene for the regulation of flowering in rice, but its variation in major cultivated rice varieties, and the effect of this variation on yield and quality, remains unknown. In this study, we selected 123 major rice varieties cultivated in China from 1936 to 2009 to analyse the relationship between the Hd1 alleles and yield-related traits. Among these varieties, 19 haplotypes were detected in Hd1, including two major haplotypes (H8 and H13) in the japonica group and three major haplotypes (H14, H15 and H16) in the indica group. Analysis of allele frequencies showed that the secondary branch number was the major aimed for Chinese indica breeding. In the five major haplotypes, SNP316(C-T) was the only difference between the two major japonica haplotypes, and SNP495(C-G) and SNP614(G-A) are the major SNPs in the three indica haplotypes. Association analysis showed that H16 is the most preponderant allele in modern cultivated Chinese indica varieties. Backcrossing this allele into the japonica variety Chunjiang06 improved yield without decreasing grain quality. Therefore, our analysis offers a new strategy for utilizing these preponderant alleles to improve yield and quality of japonica varieties for cultivation in the southern areas of China.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据