Genomic regions associated with resistance to peanut bud necrosis disease (PBND) in a recombinant inbred line (RIL) population

Jadhav, Y and Manohar, S S and Sunkad, G and Kannalli, V P and Pandey, M K and Variath, M T and Yaduru, S and Kona, P and Varshney, R K and Janila, P (2019) Genomic regions associated with resistance to peanut bud necrosis disease (PBND) in a recombinant inbred line (RIL) population. Plant Breeding (TSI). pp. 1-13. ISSN 0179-9541

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Abstract

Parents and 318 F8 recombinant inbred lines (RILs) derived from the cross, TAG 24 × ICGV 86031 were evaluated for peanut bud necrosis disease (PBND) resistance and agronomic traits under natural infestation of thrips at a disease hotspot location for 2 years. Significant genotype, environment and genotype × environment interaction effects suggested role of environment in development and spread of the disease. Quantitative trait loci (QTL) analysis using QTL Cartographer identified a total of 14 QTL for six traits of which five QTL were for disease incidence. One quantitative trait locus q60DI located on LG_AhII was identified using both QTL Cartographer and QTL Network. Another QTL q90DI was detected with a high PVE of 12.57 using QTL Cartographer. A total of nine significant additive × additive (AA) interactions were detected for PBND disease incidence and yield traits with two and seven interactions displaying effects in favour of the parental and recombinant genotype combinations, respectively. This is the first attempt on QTL discovery associated with PBND resistance in peanut. Superior RILs identified in the study can be recycled or released as variety following further evaluations.

Item Type: Article
Divisions: RP-Grain Legumes
CRP: CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
Uncontrolled Keywords: disease hotspot, peanut bud necrosis disease, Phenotypic Variance, quantitative trait loci, recombinant inbred line, simple sequence repeat
Subjects: Others > Plant Breeding
Mandate crops > Groundnut
Others > Genetics and Genomics
Others > Plant Disease
Others > Legume Crops
Depositing User: Mr Arun S
Date Deposited: 27 Sep 2019 04:03
Last Modified: 03 Oct 2019 05:36
URI: http://oar.icrisat.org/id/eprint/11316
Official URL: https://doi.org/10.1111/pbr.12743
Projects: Tropical Legumes (TL) II program
Funders: OPEC Fund for International Development, Bill and Melinda Gates Foundation (BMGF), CRP‐Grain Legumes and Dryland Cereals
Acknowledgement: The financial assistance for research work and fellowship to first author were supported by OPEC Fund for International Development (OFID), and Bill and Melinda Gates Foundation (BMGF) supported project on Tropical Legumes (TL) II program. The work has been undertaken as part of PhD research at ICRISAT under CGIAR Research Program on Grain legumes and Dryland Cereals (CRP‐GLDC).
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