An Update on Genetic Resistance of Chickpea to Ascochyta Blight

Sharma, M and Ghosh, R (2016) An Update on Genetic Resistance of Chickpea to Ascochyta Blight. Agronomy, 06 (01). 01-15. ISSN 2073-4395

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Abstract

Ascochyta blight (AB) caused by Ascochyta rabiei (Pass.) Labr. is an important and widespread disease of chickpea (Cicer arietinum L.) worldwide. The disease is particularly severe under cool and humid weather conditions. Breeding for host resistance is an efficient means to combat this disease. In this paper, attempts have been made to summarize the progress made in identifying resistance sources, genetics and breeding for resistance, and genetic variation among the pathogen population. The search for resistance to AB in chickpea germplasm, breeding lines and land races using various screening methods has been updated. Importance of the genotype × environment (GE) interaction in elucidating the aggressiveness among isolates from different locations and the identification of pathotypes and stable sources of resistance have also been discussed. Current and modern breeding programs for AB resistance based on crossing resistant/multiple resistant and high-yielding cultivars, stability of the breeding lines through multi-location testing and molecular marker-assisted selection method have been discussed. Gene pyramiding and the use of resistant genes present in wild relatives can be useful methods in the future. Identification of additional sources of resistance genes, good characterization of the host–pathogen system, and identification of molecular markers linked to resistance genes are suggested as the key areas for future study.

Item Type: Article
Divisions: RP-Grain Legumes
CRP: CGIAR Research Program on Grain Legumes
Uncontrolled Keywords: Ascochyta rabiei; breeding strategy; Cicer arietinum; disease resistance; Legume; Chickpea; Genetic Resistance; Genetics
Subjects: Mandate crops > Chickpea
Others > Genetics and Genomics
Depositing User: Mr Ramesh K
Date Deposited: 14 Mar 2016 05:22
Last Modified: 21 Oct 2016 09:34
URI: http://oar.icrisat.org/id/eprint/9378
Official URL: http://dx.doi.org/10.3390/agronomy6010018
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: The author is thankful to several colleagues at ICRISAT and collaborators from many NARS programs from India. The work reported in this article was undertaken as a part of the CGIAR Research Program on Grain Legumes. ICRISAT is a member of the CGIAR.
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