Characterization of a naturally occurring early-flowering rice mutant resulting from a novel variation in the Ghd7 locus

被引：2

作者：

Li, Wen ^{[1
]}

Zheng, Chongke ^{[1
]}

Zhou, Jinjun ^{[1
]}

Zhang, Zhizhen ^{[1
,2
]}

Zhou, Guanhua ^{[1
]}

Xie, Xianzhi ^{[1
]}

机构：

[1] Shandong Acad Agr Sci, Shandong Rice Engn Technol Res Ctr, Shandong Rice Res Inst, Jinan, Peoples R China

[2] Shandong Normal Univ, Coll Life Sci, Jinan, Peoples R China

来源：

CZECH JOURNAL OF GENETICS AND PLANT BREEDING | 2021年 / 57卷 / 04期

关键词：

bulked segregant analysis; flowering time; Ghd7; rice; ALLELES;

D O I：

10.17221/36/2021-CJGPB

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Rice is one of the main staple food crops and is consumed by more than half of the global population. Opti-mizing the flowering time may help to maximize grain production. In this study, we characterized a rice mutant, Zixi-angnuo early-flowering mutant (ZXN-E). Compared with the wild-type variety, Zixiangnuo (ZXN), the mutant plants flowered earlier, were shorter and produced smaller panicles. Bulked segregant analysis revealed a 7-bp deletion in the first exon of the Grain number, plant height, and heading date 7 (Ghd7) locus. The allele with the 7-bp deletion was not detected in the rice varieties included in the 3 000 Rice Genomes Project. Thus, the 7-bp deletion identified in the naturally occurring mutant ZXN-E is a novel variation. Our findings suggest that ZXN-E may be a useful germplasm for breeding new rice varieties.

引用

页码：166 / 169

页数：4