GrainGenes Reference Report: GNM-45-617
Reference
GNM-45-617
Title
Molecular and physical mapping of a barley gene on chromosome arm 1HL that causes sterility in hybrids with wheat
Journal
Genome
Year
2002
Volume
45
Pages
617-625
Author
Taketa S Choda M Ohashi R Ichii M Takeda K
Abstract
Summary: Addition of the long arm of barley chromosome 1H (1HL) to wheat causes severe meiotic abnormalities and complete sterility of the plants. To map the barley gene responsible for the 1H-induced sterility of wheat, a series of addition lines of translocated 1H chromosomes were developed from the crosses between the wheat 'Shinchunaga' and five reciprocal translocation lines derived from the barley line St.13559. Examination of the seed fertility of the addition lines revealed that the sterility gene is located in the interstitial 25% region of the 1HL arm. The genetic location of the sterility gene was also estimated by physically mapping sequence-tagged site (STS) markers and simple-sequence repeat (SSR) markers with known map locations. The sterility gene is designated Shw (sterility in hybrids with wheat). Comparison of the present physical map of 1HL with two previously published genetic maps revealed a paucity of markers in the proximal 30% region and non-random distribution of SSR markers. Two inconsistencies in marker order were found between the present physical map and the consensus genetic map of group 1 chromosomes of Triticeae. On the basis of the effects on meiosis and chromosomal location, the relationship of the present sterility gene with other fertility-related genes of Triticeae is discussed
External Databases
Pubmed: 12175064
Keyword
40
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: GNM-45-617
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||