Identification of Japonica Chromosome Segments Associated with Heterosis for Yield in Indica x Japonica Rice Hybrids

doi:10.2135/cropsci2010.05.0242

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	Identification of Japonica Chromosome Segments Associated with Heterosis for Yield in Indica x Japonica Rice Hybrids
	Bian, Jianmin 1; Jiang, Ling 1; Liu, Longling 1; Xiao, Yuehua 1; Wang, Zhiquan 1; Zhao, Zhigang 1; Zhai, Huqu 2; Wan, Jianmin 1,2
刊名	CROP SCIENCE
	2010
卷号	50 期号:6 页码:2328-2337
ISSN号	0011-183X
DOI	10.2135/cropsci2010.05.0242
通讯作者	Bian, Jianmin
英文摘要	To exploit the heterosis for yield and yield-related traits expressed in indica x japonica F(1) hybrids of rice (Oryza sativa L.), a set of 64 chromosome segment substitution lines (CSSLs) was constructed, with each line selected to carry one or a few chromosome segments of the japonica cv. C418 in a genetic background of indica cv. 9311. The CSSLs were crossed one by one with the recipient parent to generate a set of 64 corresponding F(1) hybrids (CSSLHs). These materials were field tested over 2 yr for six yield and yield-related traits. A total of 48 (in 2008) and 55 (in 2009) quantitative trait loci (QTL) were detected, with most individually explaining only a modest proportion of the phenotypic variance. In 2008, 72.9% of the QTL were overdominant, whereas in 2009, this proportion was only 54.5%, indicating that overdominance is important in determining heterosis in japonica x indica rice hybrids, and chromosome segments substitute technology is effective in the utilization of heterosis from intersubspecific cross between indica and japonica rice. Moreover, some of the CSSLs harbored QTL associated with heterosis in both years; these should represent potential candidates as parents of F(1) hybrids along with cv. 9311 or other indica lines.
学科主题	Agronomy ; AGRONOMY
语种	英语
出版者	CROP SCIENCE SOC AMER
WOS记录号	WOS:000284134000014
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5386]
专题	作物科学研究所
作者单位	1.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China 2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Bian, Jianmin,Jiang, Ling,Liu, Longling,et al. Identification of Japonica Chromosome Segments Associated with Heterosis for Yield in Indica x Japonica Rice Hybrids[J]. CROP SCIENCE,2010,50(6):2328-2337.
APA	Bian, Jianmin.,Jiang, Ling.,Liu, Longling.,Xiao, Yuehua.,Wang, Zhiquan.,...&Wan, Jianmin.(2010).Identification of Japonica Chromosome Segments Associated with Heterosis for Yield in Indica x Japonica Rice Hybrids.CROP SCIENCE,50(6),2328-2337.
MLA	Bian, Jianmin,et al."Identification of Japonica Chromosome Segments Associated with Heterosis for Yield in Indica x Japonica Rice Hybrids".CROP SCIENCE 50.6(2010):2328-2337.