Genetic analysis and fine mapping of a semi-dwarf gene in a centromeric region in rice (Oryza sativa L.)

Superior plant architecture is a key means of enhancing yield potential in high yielding varieties. A newly identified recessive gene, named sd-c, controls plant height and tiller number. Genetic analysis of an F2 population from a cross between the semi-dwarf mutant and japonica cv. Houshengheng sh...

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Publié dans:Breeding science. - 1998. - 63(2013), 2 vom: 01. Juni, Seite 164-8
Auteur principal: Chen, Mingjiang (Auteur)
Autres auteurs: Zhao, Zhigang, Chen, Liangming, Zhou, Feng, Zhong, Zhengzheng, Jiang, Ling, Wan, Jianmin
Format: Article en ligne
Langue:English
Publié: 2013
Accès à la collection:Breeding science
Sujets:Journal Article centromere plant architecture positional mapping semi-dwarf
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520 |a Superior plant architecture is a key means of enhancing yield potential in high yielding varieties. A newly identified recessive gene, named sd-c, controls plant height and tiller number. Genetic analysis of an F2 population from a cross between the semi-dwarf mutant and japonica cv. Houshengheng showed that the sd-c locus was flanked by SSR markers RM27877 and RM277 on chromosome 12. Thirty nine InDel markers were developed in the region and the sd-c gene was further mapped to a 1 cM centromeric region between InDel markers C11 and C12. These sequenced markers can be used to distinguish wild type and mutants and thus can be used in marker-assisted selection. The sd-c mutant decreases culm length by about 26% and doubles the tiller number without changing seed weight. Until now only sd-1 has been used in indica rice breeding programs. The sd-c mutant seems to have no undesirable pleiotropic effects and is therefore a potential genetic resource for breeding semi-dwarf indica rice cultivars 
650 4 |a Journal Article 
650 4 |a centromere 
650 4 |a plant architecture 
650 4 |a positional mapping 
650 4 |a semi-dwarf 
700 1 |a Zhao, Zhigang  |e verfasserin  |4 aut 
700 1 |a Chen, Liangming  |e verfasserin  |4 aut 
700 1 |a Zhou, Feng  |e verfasserin  |4 aut 
700 1 |a Zhong, Zhengzheng  |e verfasserin  |4 aut 
700 1 |a Jiang, Ling  |e verfasserin  |4 aut 
700 1 |a Wan, Jianmin  |e verfasserin  |4 aut 
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