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Mining allelic diversity associated with drought and salinity tolerance in the reference subset of chickpea germplasm collections

OAR@ICRISAT

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Relation http://oar.icrisat.org/5183/
 
Title Mining allelic diversity associated with drought and salinity tolerance in the reference subset of chickpea germplasm collections
 
Creator Upadhyaya, H D
etal, .
 
Subject Chickpea
 
Description Drought, salinity, and extreme variations in temperature are the
major abiotic constraints to chickpea production worldwide. With
support from GCP, we developed a global composite collection
(3,000 accessions), profiled its structure and diversity using SSRs
(50), and a reference set of 300 accessions (211 chickpea mini core +
89 additional diverse accessions) identified using DARwin-5.0. This
reference set captured 78% (1403 alleles) of the 1791 alleles of the
composite collection. Currently, we are saturating this reference set
with additional SSRs and have plans to survey this reference set using
DArT markers once the DArT technology is established at ICRISAT.
Techniques for screening for drought (root traits) and salinity
tolerance have been standardized. Published studies revealed genetic
variability for traits associated with drought and salinity tolerance
among chickpea mini core germplasm accessions. We plan to
extensively evaluate this reference set (300 accessions) for drought
and salinity tolerance besides agronomic and quality traits and
associate this variation with allelic diversity present in the reference
subset. The genetically diverse accessions with contrasting response
to drought and salinity will be identified for diverse uses in chickpea
genomics and breeding.
 
Date 2007
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
application/pdf
 
Language en
en
 
Rights —
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Identifier http://oar.icrisat.org/5183/1/Mining%20allelic%20diversity%20associated%20with%20drought%20and%20salinit.pdf
http://oar.icrisat.org/5183/7/Mining_allelic_diversity.pdf
Upadhyaya, H D and etal, . (2007) Mining allelic diversity associated with drought and salinity tolerance in the reference subset of chickpea germplasm collections. In: Generation Challenge Programme Annual Research Meeting, 12–16 September 2007, Benoni, South Africa.