QTL mapping of root traits in a doubled haploid population from a cross between upland and lowland japonica rice in three environments

doi:10.1007/s00122-005-1958-z

CORC > 中国农业科学院 > 作物科学研究所

	QTL mapping of root traits in a doubled haploid population from a cross between upland and lowland japonica rice in three environments
	Li, ZC; Mu, P; Li, CP; Zhang, HL; Li, ZK; Gao, YM; Wang, XK
刊名	THEORETICAL AND APPLIED GENETICS
	2005
卷号	110 期号:7 页码:1244-1252
ISSN号	0040-5752
DOI	10.1007/s00122-005-1958-z
通讯作者	Li, ZC
英文摘要	To genetically dissect drought resistance associated with japonica upland rice, we evaluated a doubled haploid (DH) population from a cross between two japonica cultivars for seven root traits under three different growing conditions (upland, lowland and upland in PVC pipe). The traits included basal root thickness (BRT), total root number (RN), maximum root length (MRL), root fresh weight (RFW), root dry weight (RDW), ratio of root fresh weight to shoot fresh weight (RFW/SFW) and ratio of root dry weight to shoot dry weight (RDW/SDW). The BRT was significantly correlated with the index of drought resistance, which was defined as the ratio of yield under the stress of the upland condition to that under the normal lowland condition. A complete genetic linkage map with 165 molecular markers covering 1,535 cM was constructed. Seven additive quantitative trait loci (QTLs) and 15 pairs of epistatic loci for BRT and RN were identified under upland and lowland conditions, and 12 additive QTLs and 17 pairs of epistatic QTLs for BRT, RN, MRL, RFW, RFW/SFW and RDW/SDW were identified under the PVC pipe condition. Four additive QTLs and one pair of epistatic QTLs controlling IDR were also found. These QTLs individually explained up to 25.6% of the phenotypic variance. QTL x environment (Q x E) interactions were detected for all root traits, and the contributions of these interactions ranged from 1.1% to 19.9%. Five co-localized QTLs controlling RFW and RDW, RFW/SFW, RDW/SDW and IDR, BRT and RN, RN, MRL and IDR were found. Four types of QTLs governing BRT and RN were classified by their detection in the upland and lowland conditions. Some common QTLs for root traits across different backgrounds were also revealed. These co-localized QTLs and common QTLs will facilitate marker-assisted selection for root traits in rice breeding programs.
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:000228846300010
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/5773]
专题	作物科学研究所
作者单位	(1)China Agr Univ, Beijing Key Lab Crop Genet Improvement, Minist Agr, Key Lab Crop Genom & Genet Improvement, Beijing 100094, Peoples R China;(2)Int Rice Res Inst, Manila 1099, Philippines;(3)Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Li, ZC,Mu, P,Li, CP,et al. QTL mapping of root traits in a doubled haploid population from a cross between upland and lowland japonica rice in three environments[J]. THEORETICAL AND APPLIED GENETICS,2005,110(7):1244-1252.
APA	Li, ZC.,Mu, P.,Li, CP.,Zhang, HL.,Li, ZK.,...&Wang, XK.(2005).QTL mapping of root traits in a doubled haploid population from a cross between upland and lowland japonica rice in three environments.THEORETICAL AND APPLIED GENETICS,110(7),1244-1252.
MLA	Li, ZC,et al."QTL mapping of root traits in a doubled haploid population from a cross between upland and lowland japonica rice in three environments".THEORETICAL AND APPLIED GENETICS 110.7(2005):1244-1252.