Arid
DOI10.1007/s00122-010-1517-0
Identification of several small main-effect QTLs and a large number of epistatic QTLs for drought tolerance related traits in groundnut (Arachis hypogaea L.)
Ravi, K.1; Vadez, V.1; Isobe, S.2; Mir, R. R.1; Guo, Y.3; Nigam, S. N.1; Gowda, M. V. C.4; Radhakrishnan, T.5; Bertioli, D. J.6,7; Knapp, S. J.3; Varshney, R. K.1,8
通讯作者Varshney, R. K.
来源期刊THEORETICAL AND APPLIED GENETICS
ISSN0040-5752
EISSN1432-2242
出版年2011
卷号122期号:6页码:1119-1132
英文摘要

Cultivated groundnut or peanut (Arachis hypogaea L.), an allotetraploid (2n = 4x = 40), is a self pollinated and widely grown crop in the semi-arid regions of the world. Improvement of drought tolerance is an important area of research for groundnut breeding programmes. Therefore, for the identification of candidate QTLs for drought tolerance, a comprehensive and refined genetic map containing 191 SSR loci based on a single mapping population (TAG 24 x ICGV 86031), segregating for drought and surrogate traits was developed. Genotyping data and phenotyping data collected for more than ten drought related traits in 2-3 seasons were analyzed in detail for identification of main effect QTLs (M-QTLs) and epistatic QTLs (E-QTLs) using QTL Cartographer, QTLNetwork and Genotype Matrix Mapping (GMM) programmes. A total of 105 M-QTLs with 3.48-33.36% phenotypic variation explained (PVE) were identified using QTL Cartographer, while only 65 M-QTLs with 1.3-15.01% PVE were identified using QTLNetwork. A total of 53 M-QTLs were such which were identified using both programmes. On the other hand, GMM identified 186 (8.54-44.72% PVE) and 63 (7.11-21.13% PVE), three and two loci interactions, whereas only 8 E-QTL interactions with 1.7-8.34% PVE were identified through QTLNetwork. Interestingly a number of co-localized QTLs controlling 2-9 traits were also identified. The identification of few major, many minor M-QTLs and QTL x QTL interactions during the present study confirmed the complex and quantitative nature of drought tolerance in groundnut. This study suggests deployment of modern approaches like marker-assisted recurrent selection or genomic selection instead of marker-assisted backcrossing approach for breeding for drought tolerance in groundnut.


英文关键词Peanut Drought tolerance Genetic map Molecular markers Main-effect QTLs Epistatic QTLs Molecular breeding
类型Article
语种英语
国家India ; Japan ; USA ; Brazil ; Mexico
收录类别SCI-E
WOS记录号WOS:000288394200007
WOS关键词CARBON-ISOTOPE DISCRIMINATION ; WATER-USE EFFICIENCY ; ASSISTED RECURRENT SELECTION ; MICROSATELLITE MARKERS ; MOLECULAR MARKERS ; YIELD COMPONENTS ; TROPICAL MAIZE ; GENETIC-BASIS ; LOCI ; PEANUT
WOS类目Agronomy ; Plant Sciences ; Genetics & Heredity ; Horticulture
WOS研究方向Agriculture ; Plant Sciences ; Genetics & Heredity
来源机构International Crops Research Institute for the Semi-Arid Tropics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/170707
作者单位1.Int Crops Res Inst Semi Arid Trop, Patancheru 502324, Andhra Pradesh, India;
2.Kazusa DNA Res Inst KDRI, Chiba 2920818, Japan;
3.Univ Georgia, Inst Plant Breeding Genet & Genom, Athens, GA 30602 USA;
4.Univ Agr Sci, Dharwad 580005, Karnataka, India;
5.Directorate Groundnut Res, Junagadh 362001, Gujarat, India;
6.Univ Catolica Brasilia, BR-70790160 Brasilia, DF, Brazil;
7.Univ Brasilia, BR-70910900 Brasilia, DF, Brazil;
8.CIMMYT, Generat Challenge Programme, Mexico City 06600, DF, Mexico
推荐引用方式
GB/T 7714
Ravi, K.,Vadez, V.,Isobe, S.,et al. Identification of several small main-effect QTLs and a large number of epistatic QTLs for drought tolerance related traits in groundnut (Arachis hypogaea L.)[J]. International Crops Research Institute for the Semi-Arid Tropics,2011,122(6):1119-1132.
APA Ravi, K..,Vadez, V..,Isobe, S..,Mir, R. R..,Guo, Y..,...&Varshney, R. K..(2011).Identification of several small main-effect QTLs and a large number of epistatic QTLs for drought tolerance related traits in groundnut (Arachis hypogaea L.).THEORETICAL AND APPLIED GENETICS,122(6),1119-1132.
MLA Ravi, K.,et al."Identification of several small main-effect QTLs and a large number of epistatic QTLs for drought tolerance related traits in groundnut (Arachis hypogaea L.)".THEORETICAL AND APPLIED GENETICS 122.6(2011):1119-1132.
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