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Chickpea germplasm for use in crop improvement: Approaches and way forward

Upadhyaya, H.D., Dwivedi, S.L., Sharma, S., Singh, S., Lalitha, N. and Varshney, R.K.ORCID: 0000-0002-4562-9131 (2014) Chickpea germplasm for use in crop improvement: Approaches and way forward. In: Harnessing Chickpea Value Chain for Nutrition Security and Commercialization of Smallholder Agriculture in Africa, 30 Jan - 1 Feb 2014, Debra Zeit, Ethiopia

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Plant genetic resources are the basic raw materials for the genetic gains and an insurance against present and future threats to agricultural production. The ICRISAT genebank at Patancheru, India maintains 20,268 cultivated and wild chickpea accessions. Core (10% of entire collection) or mini core (10% of core or 1% of entire collection), representing diversity of the entire collection of a given species preserved in genebank has been suggested as gateway to enhance use of germplasm in crop breeding. These core and mini core collectionsconsist of 1,956 and 211 accessions, respectively. Further, a global composite collection consisting of 3000 accessions was formed, using data sets and germplasm from ICRISAT and ICARDA genebanks, which was molecularly profiled to form a genotype-based reference set. This reference set consists of 300 genetically diverse accessions, which captured 78% of the 1,683 alleles detected in the global composite collection. Further analysis on this reference set based on 48 and 107 SSRs detected four and nine subgroups. Using mini core collection, a number of trait-specific genetically diverse germplasm with agronomically beneficial traits have been identified for use in chickpea improvement.

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