RRC ID 36343
著者 Nguyen AT, Nishijima R, Kajimura T, Murai K, Takumi S.
タイトル Quantitative trait locus analysis for flowering-related traits using two F2 populations derived from crosses between Japanese common wheat cultivars and synthetic hexaploids.
ジャーナル Genes Genet Syst
Abstract Flowering time is an important trait for Japanese wheat breeding. Aegilops tauschii, the D-genome donor of hexaploid wheat, is a useful resource to enlarge the D-genome diversity of common wheat. Previously, we identified flowering-related QTLs in F2 populations of synthetic hexaploid wheat lines between the tetraploid wheat cultivar Langdon and Ae. tauschii accessions. Here, to evaluate the usefulness of the early-flowering alleles from Ae. tauschii for Japanese wheat breeding, QTL analyses were conducted in two F2 populations derived from crosses between Japanese wheat cultivars and early-flowering lines of synthetic hexaploid wheat. Only two chromosomal regions controlling flowering-related traits were identified, on chromosomes 2DS and 5AL in the mapping populations, and no previously identified QTLs were found in the synthetic hexaploid lines. The strong effect of the 2DS QTL, putatively corresponding to Ppd-D1, was considered to hide any significant expression of other QTLs with small effects on flowering-related traits. When F2 individuals carrying Ae. tauschii-homozygous alleles around the 2DS QTL region were selected, the Ae. tauschii-derived alleles of the previously identified flowering QTLs partly showed an early-flowering phenotype compared with the Japanese wheat-derived alleles. Thus, some early-flowering alleles from Ae. tauschii may be useful for production of early-flowering Japanese wheat cultivars.
巻・号 90(2)
ページ 89-98
公開日 2015-1-1
DOI 10.1266/ggs.90.89
PMID 26399768
MeSH Chromosome Mapping Chromosomes, Plant / genetics Crosses, Genetic Flowers / genetics* Flowers / growth & development Gene Expression Genome, Plant Hybridization, Genetic Lod Score Polyploidy Quantitative Trait Loci Triticum / genetics* Triticum / growth & development
IF 0.917
引用数 6
WOS 分野 GENETICS & HEREDITY BIOCHEMISTRY & MOLECULAR BIOLOGY
リソース情報
コムギ LPGKU2271(Norin 61) KU-2097