Identification of quantitative trait loci controlling heading date in rice using a high-density linkage map

被引：327

作者：

Yano, M ^{[1
]}

Harushima, Y ^{[1
]}

Nagamura, Y ^{[1
]}

Kurata, N ^{[1
]}

Minobe, Y ^{[1
]}

Sasaki, T ^{[1
]}

机构：

[1] INST SOC TECHNOINNOVAT AGR FORESTRY & FISHERIES,TSUKUBA,IBARAKI 305,JAPAN

来源：

THEORETICAL AND APPLIED GENETICS | 1997年 / 95卷 / 07期

关键词：

RFLP markers; days-to-heading; QTL analysis; rice; epistatic interaction;

D O I：

10.1007/s001220050658

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Quantitative trait locus (QTL) analysis has been carried out to identify genes conferring heading date in rice. One hundred and eighty six F-2 plants derived from a cross between a japonica variety, Nipponbare, and an indica variety, Kasalath, were used as a segregating population for QTL mapping and more than 850 markers were employed to identify QTLs. Scan-analysis revealed the existence of two QTLs with large effects, Hd-1 and Hd-2, one in the middle of chromosome 6 and one at the end of chromosome 7, respectively. For both loci, the Kasalath alleles reduced days-to-heading. In addition, three QTLs with minor effects, Hd-3, Hd-4 and Hd-5, were found to be located on chromosomes 6, 7 and 8 based on a secondary scan analysis which was carried out by removing the phenotypic effects of Hd-1 and Hd-2. For the three secondary loci, the Nipponbare alleles reduced days-to-heading. The five QTLs explained 84% of the total phenotypic variation in the F-2 population based on a multiple-QTL model. The presence of a digenic interaction between Hd-1 and Hd-2 was clearly suggested.

引用

页码：1025 / 1032

页数：8

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