Genetics of resistance to ascochyta blight in chickpea (Cicer arietinum L.) |
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| Authors: | S K Tewari M P Pandey |
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| Institution: | (1) Department of Plant Breeding, G. B. Plant University of Agriculture and Technology, 263145 Pantnagar, India |
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| Abstract: | Summary Six chickpea lines resistant to Ascochyta rabiei (Pass.) Lab. were crossed to four susceptible cultivars. The hybrids were resistant in all the crosses except the crosses where resistant line BRG 8 was involved. Segregation pattern for diseases reaction in F2, BCP1, BCP2 and F3 generations in field and glasshouse conditions revealed that resistance to Ascochyta blight is under the control of a single dominant gene in EC 26446, PG 82-1, P 919, P 1252-1 and NEC 2451 while a recessive gene is responsible in BRG 8. Allelic tests indicated the presence of three independently segregating genes for resistance; one dominant gene in P 1215-1 and one in EC 26446 and PG 82-1, and a recessive one in BRG 8.Research paper No. 3600 |
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| Keywords: | Cicer arietinum chickpea Ascochyta rabiei Ascochyta blight disease reaction allelic relationship inheritance of resistance genetic analysis |
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