Molecular mapping of the intermedium spike-c (int-c) and non-brittle rachis 1 (btr1) loci in barley (Hordeum vulgare L.)

被引：43

作者：

Komatsuda, T ^{[1
]}

Mano, Y ^{[1
]}

机构：

[1] Natl Inst Agrobiol Sci, Tsukuba, Ibaraki 3058602, Japan

来源：

THEORETICAL AND APPLIED GENETICS | 2002年 / 105卷 / 01期

关键词：

morphological marker loci; domestication; amplified-fragment-length polymorphism (AFLP); recombinant inbred lines (RILs); quantitative trait loci (QTLs);

D O I：

10.1007/s00122-001-0858-0

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Lateral spikelet fertility and a non-brittle rachis are key characters in studying the evolution of barley. The fertility of lateral spikelets is controlled predominantly by the alleles at the vrs1 locus on chromosome 2HL and is modified by the alleles at the int-c locus on chromosome 4HS. The non-brittle rachis is controlled by alleles at two tightly linked loci, btr1 and btr2, on chromosome 3HS. This paper presents the integration of the int-c and btr1 loci in molecular linkage maps of barley. The int-c locus was mapped to the end of chromosome 4HS, 8.2 cM distal from the MWG2033 locus. The analysis was followed by a composite interval mapping of quantitative trait loci, which verified the position of the int-c locus. Linkage analysis using recombinant inbred lines showed that the btr1 locus is flanked between two AFLP loci, e14m27.4.1 and e15m19.7, with map distances of 3.1 cM and 4.2 cM, respectively. The molecular markers will expedite further high-density mapping of the int-c and btr1 loci.

引用

页码：85 / 90

页数：6

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