| Literature DB >> 31016346 |
Chaolan Fan1, Jiangtao Luo2, Shujie Zhang1, Meng Liu1, Qingcheng Li1, Yazhou Li1, Lei Huang1, Xuejiao Chen1, Shunzong Ning1, Zhongwei Yuan1, Lianquan Zhang1, Jirui Wang1, Youliang Zheng1, Dengcai Liu3,4, Ming Hao5.
Abstract
KEY MESSAGE: Common wheat landrace Kaixian-luohanmai carries a gene(s) that promotes homoeologous chromosome pairing. A major QTL responsible for this effect was mapped to chromosome arm 3AL. Polyhaploid hybrids of a Chinese common wheat landrace Kaixian-luohanmai (KL) and related species show increased levels of chromosome pairing. Over 90% of that pairing is between homoeologous arms of wheat chromosomes, with a very strong preference for pairing between homoeologs from genomes A and D. Wheat-rye pairing was also observed at low frequency. Two mapping populations were created from the hybrids of KL with two wheat genotypes top crossed to rye. Mean chiasmata numbers per plant were used as phenotypic data. Wheat 660 K and 15 K SNP arrays, DArT markers and SSR markers were used for genotyping of the top-cross ABDR hybrids. One major QTL, named QPh.sicau-3A, for increased homoeologous pairing was detected on chromosome arm 3AL, and it was responsible for ca. 16% of the total variation. This QTL was located in the interval 696-725 Mb in the Chinese Spring reference genome. SNP markers closely linked with QPh.sicau-3A were converted to KASP markers and validated for marker-assisted selection.Entities:
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Year: 2019 PMID： 31016346 DOI： 10.1007/s00122-019-03344-x
Source DB: PubMed Journal: Theor Appl Genet ISSN： 0040-5752 Impact factor: 5.699