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Mini Core Collection as a Resource to Identify New Sources of Variation

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Relation http://oar.icrisat.org/7177/
http://dx.doi.org/10.2135/cropsci2013.04.0259
10.2135/cropsci2013.04.0259
 
Title Mini Core Collection as a Resource to Identify New Sources of Variation
 
Creator Upadhyaya, H D
Dronavalli, N
Dwivedi, S L
Kashiwagi, J
Krishnamurthy, L
Pande, S
Sharma, H C
Vadez, V
Singh, S
Varshney, R K
Gowda, C L L
 
Subject Chickpea
Genetics and Genomics
 
Description In chickpea, bottlenecks associated with its domestication and low use of germplasm in improvement programs have resulted in a narrow genetic base and its vulnerability to abiotic and biotic stresses. The core and mini core collections, representing diversity in the entire collection, have been advocated for enhanced utilization of germplasm in crop improvement. A chickpea mini core (211 accessions) was evaluated for agronomic traits from 2000 and 2001 to 2003 and 2004 in post-rainy seasons under irrigated and non-irrigated conditions. The published information on the response of chickpea mini core accessions to stress revealed that 40 accessions had resistance to abiotic stress, 31 to biotic stress, and 24 had no resistance to either of the stresses. The abiotic and biotic stress resistant groups had six accessions in common. The mini core collection accessions were also a part of composite collection accessions in chickpea, which was genotyped using 48 simple sequence repeats (SSRs; BMC Plant Biol. 8:106, 2008). The agronomic evaluation, stress response, and molecular profiling data on 93 accessions, including four controls, were used to identify genetically diverse germplasm with agronomically beneficial traits. A number of genetically diverse accessions possessing agronomically beneficial traits, such as ICC 440, 637, 1098, 3325, 3362, 4872, 7441, 8621, 9586, 10399, 12307, 14402, 15680, and 15686, which meet breeders’ needs, have been identified for use in breeding and genetics to map genomic regions associated with beneficial traits and as source materials for developing high yielding and widely adapted chickpea cultivars with multiple resistance to abiotic and biotic stress.
 
Publisher Crop Science Society of America
 
Date 2013
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/7177/1/cs-53-6-2506.pdf
Upadhyaya, H D and Dronavalli, N and Dwivedi, S L and Kashiwagi, J and Krishnamurthy, L and Pande, S and Sharma, H C and Vadez, V and Singh, S and Varshney, R K and Gowda, C L L (2013) Mini Core Collection as a Resource to Identify New Sources of Variation. Crop Science, 53 (6). pp. 2506-2517. ISSN 1435-0653