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Agronomy 2016, 6(1), 18; doi:10.3390/agronomy6010018

An Update on Genetic Resistance of Chickpea to Ascochyta Blight

International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502324, Telangana, India
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Author to whom correspondence should be addressed.
Academic Editors: Diego Rubiales, Maria Carlota Vaz Patto and Elena Prats
Received: 3 December 2015 / Revised: 19 February 2016 / Accepted: 24 February 2016 / Published: 8 March 2016
(This article belongs to the Special Issue Breeding for Disease Resistance)
View Full-Text   |   Download PDF [529 KB, uploaded 8 March 2016]   |  

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. View Full-Text
Keywords: Ascochyta rabiei; breeding strategy; Cicer arietinum; disease resistance; legume Ascochyta rabiei; breeding strategy; Cicer arietinum; disease resistance; legume
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sharma, M.; Ghosh, R. An Update on Genetic Resistance of Chickpea to Ascochyta Blight. Agronomy 2016, 6, 18.

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