Identification of main effect and epistatic quantitative trait loci for morphological and yield-related traits in peanut (Arachis hypogaea L.)

被引：19

作者：

Khedikar, Yogendra ^{[1
,2
]}

Pandey, Manish K. ^{[2
]}

Sujay, V. ^{[1
,2
]}

Singh, Sube ^{[2
]}

Nayak, Spurthi N. ^{[2
,3
]}

Klein-Gebbinck, Henry W. ^{[4
]}

Sarvamangala, Cholin ^{[1
,2
]}

Mukri, Ganapati ^{[1
]}

Garg, Vanika ^{[2
]}

Upadhyaya, Hari D. ^{[2
]}

Nadaf, H. L. ^{[3
]}

Gowda, M. V. C. ^{[1
]}

Varshney, Rajeev K. ^{[2
]}

Bhat, Ramesh S. ^{[3
]}

机构：

[1] Univ Agr Sci, Dept Genet & Plant Breeding, Dharwad, Karnataka, India

[2] Int Crops Res Inst Semi Arid Trop, Hyderabad, Andhra Pradesh, India

[3] Univ Agr Sci, Dept Biotechnol, Dharwad, Karnataka, India

[4] Agr & Agri Food Canada, Beaverlodge Res Farm, Beaverlodge, AB, Canada

来源：

MOLECULAR BREEDING | 2018年 / 38卷 / 01期

关键词：

Peanut; QTLanalysis; Epistatic interaction; Agro-morphological traits; Yield; LATE LEAF-SPOT; RUST RESISTANCE; QTL; GENOME; OIL; DURANENSIS; GENES; ELITE;

D O I：

10.1007/s11032-017-0764-z

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

An effort was made in the present study to identify the main effect and epistatic quantitative trait locus (QTL) for the morphological and yield-related traits in peanut. A recombinant inbred line (RIL) population derived from TAG 24 x GPBD 4 was phenotyped in seven environments at two locations. QTL analysis with available genetic map identified 62 main-effect QTLs (M-QTLs) for ten morphological and yield-related traits with the phenotypic variance explained (PVE) of 3.84-15.06%. Six major QTLs (PVE > 10%) were detected for PLHT, PPP, YPP, and SLNG. Stable M-QTLs appearing in at least two environments were detected for PLHT, LLN, YPP, YKGH, and HSW. Five M-QTLs governed two traits each, and 16 genomic regions showed co-localization of two to four M-QTLs. Intriguingly, a major QTL reported to be linked to rust resistance showed pleiotropic effect for yield-attributing traits like YPP (15.06%, PVE) and SLNG (13.40%, PVE). Of the 24 epistatic interactions identified across the traits, five interactions involved six M-QTLs. Three interactions were additive x additive and remaining two involved QTL x environment (QE) interactions. Only one major M-QTL governing PLHT showed epistatic interaction. Overall, this study identified the major M-QTLs for the important productivity traits and also described the lack of epistatic interactions for majority of them so that they can be conveniently employed in peanut breeding.

引用

页数：12

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