Breeding strategies for optimum heading date using genotypic information in rice

doi:10.1007/s11032-009-9332-5

	Breeding strategies for optimum heading date using genotypic information in rice
	Wei, Xiangjin 1; Liu, Linglong 1; Xu, Junfeng 1; Jiang, Ling 1; Zhang, Wenwei 1; Wang, Jiankang 2; Zhai, Huqu 2; Wan, Jianmin 1,2
刊名	MOLECULAR BREEDING
	2010
卷号	25 期号:2 页码:287-298
关键词	Breeding Heading date Heterosis QTL pyramiding Rice
ISSN号	1380-3743
DOI	10.1007/s11032-009-9332-5
通讯作者	Wei, Xiangjin
英文摘要	Heading date (HD) is a key trait for the adaptation of rice cultivar to a specific growing region. Here, we report conventional and marker-assisted breeding strategies using genetic information related to the determination of HD, where the breeding objectives were to avoid the delayed heading common in indica x japonica hybrids, to increase the efficiency in selecting hybrid rice combinations having a suitable growth duration, and to develop cultivars with target growth duration by quantitative trait locus (QTL) pyramiding. The allelic constitution at the major HD loci was determined for a set of 109 leading Chinese rice cultivars by crossing them with HD tester lines. It was shown that the late heading in indica x japonica hybrids can be overcome by replacing the strong photoperiod-sensitivity allele Se-1 (n) with Se-1 (e) . A breeding strategy to enable the selection of hybrid combinations with suitable growth duration was proposed, based on HD genotypic information in rice. Meanwhile, a QTL analysis for HD was conducted over five years based on a recombinant inbred line population, derived from two parents Asominori (japonica) and IR24 (indica). Four QTLs, located on chromosomes 2, 3, 6, and 8, respectively, could be detected in all five years, indicating they were stably expressed QTL. According to this QTL information, and taking Asominori as an example, the HD genotypes for improving the growth duration were designed, and the best breeding selection schemes were determined by use of a genetic breeding simulation tool. Results obtained in this study demonstrate that genetic information related to HD can make a significant contribution to rice breeding.
学科主题	Agronomy ; Plant Sciences ; Genetics & Heredity ; Horticulture ; AGRONOMY ; GENETICS & HEREDITY ; HORTICULTURE ; PLANT SCIENCES
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000273812300009
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5449]
专题	作物科学研究所_分子生物学系
作者单位	1.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Jiangsu Prov Ctr Plant Gene Engn, Nanjing 210095, Peoples R China 2.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 10081, Peoples R China
推荐引用方式 GB/T 7714	Wei, Xiangjin,Liu, Linglong,Xu, Junfeng,et al. Breeding strategies for optimum heading date using genotypic information in rice[J]. MOLECULAR BREEDING,2010,25(2):287-298.
APA	Wei, Xiangjin.,Liu, Linglong.,Xu, Junfeng.,Jiang, Ling.,Zhang, Wenwei.,...&Wan, Jianmin.(2010).Breeding strategies for optimum heading date using genotypic information in rice.MOLECULAR BREEDING,25(2),287-298.
MLA	Wei, Xiangjin,et al."Breeding strategies for optimum heading date using genotypic information in rice".MOLECULAR BREEDING 25.2(2010):287-298.