Journal article
Marker-assisted introgression of a QTL region to improve rust resistance in three elite and popular varieties of peanut (Arachis hypogaea L.)
Theoretical and Applied Genetics, Vol.127(8), pp.1771-1781
2014
Abstract
Leaf rust, caused by Puccinia arachidis Speg, is one of the major devastating diseases in peanut (Arachis hypogaea L.). One QTL region on linkage group AhXV explaining upto 82.62 % phenotypic variation for rust resistance was validated and introgressed from cultivar ‘GPBD 4’ into three rust susceptible varieties (‘ICGV 91114’, ‘JL 24’ and ‘TAG 24’) through marker-assisted backcrossing (MABC). The MABC approach employed a total of four markers including one dominant (IPAHM103) and three co-dominant (GM2079, GM1536, GM2301) markers present in the QTL region. After 2–3 backcrosses and selfing, 200 introgression lines (ILs) were developed from all the three crosses. Field evaluation identified 81 ILs with improved rust resistance. Those ILs had significantly increased pod yields (56–96 %) in infested environments compared to the susceptible parents. Screening of selected 43 promising ILs with 13 markers present on linkage group AhXV showed introgression of the target QTL region from the resistant parent in 11 ILs. Multi-location field evaluation of these ILs should lead to the release of improved varieties. The linked markers may be used in improving rust resistance in peanut breeding programmes.
Details
- Title
- Marker-assisted introgression of a QTL region to improve rust resistance in three elite and popular varieties of peanut (Arachis hypogaea L.)
- Authors/Creators
- R.K. Varshney (Author/Creator) - CGIARM.K. Pandey (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsP. Janila (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsS.N. Nigam (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsH. Sudini (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsM.V.C. Gowda (Author/Creator) - University of Agricultural Sciences, DharwadM. Sriswathi (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsT. Radhakrishnan (Author/Creator) - Directorate of Groundnut ResearchS.S. Manohar (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsP. Nagesh (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
- Publication Details
- Theoretical and Applied Genetics, Vol.127(8), pp.1771-1781
- Publisher
- Springer Verlag
- Identifiers
- 991005542960107891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.96 QTL
- Web Of Science research areas
- Agronomy
- Genetics & Heredity
- Horticulture
- Plant Sciences
- ESI research areas
- Agricultural Sciences