Molecular mapping of wilt resistance genes in chickpea |
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| Authors: | S J M Gowda P Radhika N Y Kadoo L B Mhase V S Gupta |
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| Institution: | (1) Biochemical Sciences Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India;(2) Present address: CSIRO Plant Industry, Queensland Bioscience Precinct, 306, Carmody Road, St. Lucia, QLD, 4067, Australia;(3) Pulses Research Station, Mahatma Phule Krishi Vidyapeeth, Rahuri, 413722, India |
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| Abstract: | Fusarium wilt is a widespread and serious chickpea disease caused by the soil-borne fungus Fusarium oxysporum f.sp. ciceri (Foc). We evaluated an F9 recombinant inbred line population of chickpea for resistance to three Foc races (1, 2 and 3) in pot culture experiments
and identified flanking and tightly linked DNA markers for the resistance genes. The simple sequence repeat markers H3A12
and TA110 flanked the Foc1 locus at 3.9 and 2.1 cM, respectively, while Foc2 was mapped 0.2 cM from TA96 and 2.7 cM from H3A12. The H1B06y and TA194 markers flanked the Foc3 locus at 0.2 and 0.7 cM, respectively. These markers were also validated using 16 diverse chickpea genotypes. Identification
of tightly linked flanking markers for wilt resistance genes will be useful for their exploitation in breeding programs and
to understand the mechanism of resistance and evolution of the genes.
S. J. M. Gowda and P. Radhika contributed equally to this study. |
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| Keywords: | Fusarium wilt Fusarium oxysporum Pathogen races Genetic mapping Marker validation |
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