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Foliar fungal disease‐resistant introgression lines of groundnut ( Arachis hypogaea L.) record higher pod and haulm yield in multilocation testing
Author(s) -
Pasupuleti Janila,
Pandey Manish K.,
Manohar Surendra S.,
Variath Murali T.,
Nallathambi Premalatha,
Nadaf Hajisaheb L.,
Sudini Harikishan,
Varshney Rajeev K.
Publication year - 2016
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12358
Subject(s) - point of delivery , biology , introgression , backcrossing , arachis hypogaea , leaf spot , rust (programming language) , plant disease resistance , agronomy , horticulture , veterinary medicine , quantitative trait locus , genotype , gene , genetics , medicine , computer science , programming language
Abstract Introgression lines ( IL s) of groundnut with enhanced resistance to rust and late leaf spot ( LLS ) recorded increased pod and haulm yield in multilocation testing. Marker‐assisted backcrossing ( MABC ) approach was used to introgress a genomic region containing a major QTL that explains >80% of phenotypic variance ( PV ) for rust resistance and 67.98% PV for LLS resistance. IL s in the genetic background of TAG 24, ICGV 91114 and JL 24 were evaluated for two seasons to select 20 best IL s based on resistance, productivity parameters and maturity duration. Multilocation evaluation of the selected IL s was conducted in three locations including disease hot spots. Background genotype, environment and genotype × environment interactions are important for expression of resistance governed by the QTL region. Six best IL s namely ICGV 13192, ICGV 13193, ICGV 13200, ICGV 13206, ICGV 13228 and ICGV 13229 were selected with 39–79% higher mean pod yield and 25–89% higher mean haulm yield over their respective recurrent parents. Pod yield increase was contributed by increase in seed mass and number of pods per plant.