Mapping QTL for resistance to botrytis grey mould in chickpea

Anuradha, C and Gaur, P M and Pande, S and Gali, K K and Ganesh, M and Kumar, J and Varshney, R K (2011) Mapping QTL for resistance to botrytis grey mould in chickpea. Euphytica, 182 (1). pp. 1-9. ISSN 0014-2336

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Abstract

Botrytis grey mould (BGM) caused by Botrytis cinerea Pers. ex. Fr. is the second most important foliar disease of chickpea (Cicer arietinum L.) after ascochyta blight. An intraspecific linkage map of chickpea consisting of 144 markers assigned on 11 linkage groups was constructed from recombinant inbred lines (RILs) of a cross that involved a moderately resistant kabuli cultivar ICCV 2 and a highly susceptible desi cultivar JG 62. The length of the map obtained was 442.8 cM with an average interval length of 3.3 cM. Three quantitative trait loci (QTL) which together accounted for 43.6% of the variation for BGM resistance were identified and mapped on two linkage groups. QTL1 explained about 12.8% of the phenotypic variation for BGM resistance and was mapped on LG 6A. It was found tightly linked to markers SA14 and TS71rts36r at a LOD score of 3.7. QTL2 and QTL3 accounted for 9.5 and 48% of the phenotypic variation for BGM resistance, respectively, and were mapped on LG 3. QTL 2 was identified at LOD 2.7 and flanked by markers TA25 and TA144, positioned at 1 cM away from marker TA25. QTL3 was a strong QTL detected at LOD 17.7 and was flanked by TA159 at 12 cM distance on one side and TA118 at 4 cM distance on the other side. This is the first report on mapping of QTL for BGM resistance in chickpea. After proper validation, these QTL will be useful in marker-assisted pyramiding of BGM resistance in chickpea

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Uncontrolled Keywords: Botrytis grey mould, Chickpea, Cicer arietinum L., Linkage map, QTL mapping, Disease resistance
Subjects: Mandate crops > Chickpea
Depositing User: Ms K Syamalamba
Date Deposited: 28 Nov 2011 08:44
Last Modified: 28 Nov 2011 08:44
URI: http://oar.icrisat.org/id/eprint/4425
Official URL: http://dx.doi.org/10.1007/s10681-011-0394-1
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: The senior research fellowship awarded to Chetukuri Anuradha by the Council for Scientific and Industrial Research (CSIR), India and technical help provided by Seetha Kanan and Mr. Bryan J Moss are gratefully acknowledged. Thanks are also due to Spurthi Nayak for useful discussions while interpreting results
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