Dissection of heterosis for yield and related traits using populations derived from introgression lines in rice

doi:10.1016/j.cj.2016.05.001

CORC > 中国农业科学院 > 作物科学研究所

	Dissection of heterosis for yield and related traits using populations derived from introgression lines in rice
	Xiang Chao 1; Zhang Hongjun 1; Wang Hui 2; Wei Shaobo 1; Fu Binying 1; Xia Jiafa 2; Li Zefu 2; Gao Yongming 1; Ye Guoyou 3
刊名	The Crop Journal
	2016
卷号	4 期号:6 页码:468-478
关键词	Rice Yield and related traits Introgression lines Heterosis Quantitative trait loci
ISSN号	2095-5421
DOI	10.1016/j.cj.2016.05.001
英文摘要	Despite the great success achieved by the exploitation of heterosis in rice, the genetic basis of heterosis is still not well understood. We adopted an advanced-backcross breeding strategy to dissect the genetic basis of heterosis for yield and eight related traits. Four testcross (TC) populations with 228 testcross F_1 combinations were developed by crossing 57 introgression lines with four types of widely used male sterile lines using a North Carolina II mating design. Analysis of variance indicated that the effects of testcross F_1 combinations and their parents were significant or highly significant for most of the traits in both years, and all interaction effects with year were significant for most of the traits. Positive midparent heterosis (H_(MP)) was observed for most traits in the four TC populations in the two years. The relative H_(MP) levels for most traits varied from highly negative to highly positive. Sixty-two dominant-effect QTL were identified for H_(MP) of the nine traits in the four TC populations in the two years. Of these, 22 QTL were also identified for the performance of testcross F_1. Most dominant-effect QTL could individually explain more than 10% of the phenotypic variation. Four QTL clusters were observed including the region surrounding the RM9–RM297 region on chromosome 1, the RM110–RM279–RM8–RM5699–RM452 region on chromosome 2, the RM5463 locus on chromosome 6 and the RM1146–RM147 region on chromosome 10. The identified QTL for heterosis provide valuable information for dissecting the genetic basis of heterosis.
学科主题	农作物
语种	中文
内容类型	期刊论文
源URL	[http://ir.nais.net.cn/handle/2HMLN22E/131221]
专题	作物科学研究所
作者单位	1.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Beijing, 100081; 2.Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei, 230031; 3.Genetics and Biotechnology Division, International Rice Research Institute, Philippines, Metro Manila
推荐引用方式 GB/T 7714	Xiang Chao,Zhang Hongjun,Wang Hui,et al. Dissection of heterosis for yield and related traits using populations derived from introgression lines in rice[J]. The Crop Journal,2016,4(6):468-478.
APA	Xiang Chao.,Zhang Hongjun.,Wang Hui.,Wei Shaobo.,Fu Binying.,...&Ye Guoyou.(2016).Dissection of heterosis for yield and related traits using populations derived from introgression lines in rice.The Crop Journal,4(6),468-478.
MLA	Xiang Chao,et al."Dissection of heterosis for yield and related traits using populations derived from introgression lines in rice".The Crop Journal 4.6(2016):468-478.