Record Details

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

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/10381/
http://dx.doi.org/10.1007/s11032-017-0764-z
10.1007/s11032-017-0764-z
 
Title Identification of main effect and epistatic quantitative trait loci for morphological and yield-related traits in peanut (Arachis hypogaea L.)
 
Creator Khedikar, Y
Pandey, M K
Sujay, V
Singh, S
Nayak, S N
Klein-Gebbinck, H W
Sarvamangala, C
Mukri, G
Garg, V
Upadhyaya, H D
Nadaf, H L
Gowda, M V C
Varshney, R K
Bhat, R S
 
Subject Plant Breeding
Groundnut
Genetics and Genomics
 
Description 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 × 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 × additive and remaining two involved QTL × 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.
 
Publisher Springer
 
Date 2018-01
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/10381/1/Identification%20of%20main%20effect%20and%20epistatic%20quantitative%20trait%20loci.pdf
Khedikar, Y and Pandey, M K and Sujay, V and Singh, S and Nayak, S N and Klein-Gebbinck, H W and Sarvamangala, C and Mukri, G and Garg, V and Upadhyaya, H D and Nadaf, H L and Gowda, M V C and Varshney, R K and Bhat, R S (2018) Identification of main effect and epistatic quantitative trait loci for morphological and yield-related traits in peanut (Arachis hypogaea L.). Molecular Breeding (TSI), 38(1) (7). pp. 1-12. ISSN 1380-3743