Correlations and comparisons of quantitative trait loci with family per se and testcross performance for grain yield and related traits in maize

doi:10.1007/s00122-012-2017-1

	Correlations and comparisons of quantitative trait loci with family per se and testcross performance for grain yield and related traits in maize
	Peng, Bo 1,2; Li, Yongxiang 1; Wang, Yang 1; Liu, Cheng 3; Liu, Zhizhai 1,4; Zhang, Yan 1; Tan, Weiwei 1; Wang, Di 1; Shi, Yunsu 1; Sun, Baocheng 3
刊名	THEORETICAL AND APPLIED GENETICS
	2013
卷号	126 期号:3 页码:773-789
ISSN号	0040-5752
DOI	10.1007/s00122-012-2017-1
通讯作者	Peng, Bo
英文摘要	Simultaneous improvement in grain yield and related traits in maize hybrids and their parents (inbred lines) requires a better knowledge of genotypic correlations between family per se performance (FP) and testcross performance (TP). Thus, to understand the genetic basis of yield-related traits in both inbred lines and their testcrosses, two F (2:3) populations (including 230 and 235 families, respectively) were evaluated for both FP and TP of eight yield-related traits in three diverse environments. Genotypic correlations between FP and TP, (FP, TP), were low (0-0.16) for grain yield per plant (GYPP) and kernel number per plant (KNPP) in the two populations, but relatively higher (0.32-0.69) for the other six traits with additive effects as the primary gene action. Similar results were demonstrated by the genotypic correlations between observed and predicted TP values based on quantitative trait loci positions and effects for FP, (M (FP), Y (TP)). A total of 88 and 35 QTL were detected with FP and TP, respectively, across all eight traits in the two populations. However, the genotypic variances explained by the QTL detected in the cross-validation analysis were much lower than those in the whole data set for all traits. Several common QTL between FP and TP that accounted for large phenotypic variances were clustered in four genomic regions (bin 1.10, 4.05-4.06, 9.02, and 10.04), which are promising candidate loci for further map-based cloning and improvement in grain yield in maize. Compared with publicly available QTL data, these QTL were also detected in a wide range of genetic backgrounds and environments in maize. These results imply that effective selection based on FP to improve TP could be achieved for traits with prevailing additive effects.
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:000315441800017
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5062]
专题	作物科学研究所_种质资源保存与研究中心
作者单位	1.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China 2.Tianjin Crops Res Inst, Tianjin 300112, Peoples R China 3.Xinjiang Acad Agr Sci, Inst Food Crops, Urumqi 830000, Peoples R China 4.Southwest Univ, Chongqing 400716, Peoples R China
推荐引用方式 GB/T 7714	Peng, Bo,Li, Yongxiang,Wang, Yang,et al. Correlations and comparisons of quantitative trait loci with family per se and testcross performance for grain yield and related traits in maize[J]. THEORETICAL AND APPLIED GENETICS,2013,126(3):773-789.
APA	Peng, Bo.,Li, Yongxiang.,Wang, Yang.,Liu, Cheng.,Liu, Zhizhai.,...&Li, Yu.(2013).Correlations and comparisons of quantitative trait loci with family per se and testcross performance for grain yield and related traits in maize.THEORETICAL AND APPLIED GENETICS,126(3),773-789.
MLA	Peng, Bo,et al."Correlations and comparisons of quantitative trait loci with family per se and testcross performance for grain yield and related traits in maize".THEORETICAL AND APPLIED GENETICS 126.3(2013):773-789.