Indian Society of Genetics & Plant Breeding

Characterization of drought tolerant accessions identified from the minicore of chickpea (Cicer arietinum L.)

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Terminal drought is one of the major causes of yield losses
in chickpea (Cicer arietinum L.) and there is scope for
recovery of major part of this loss through genetic
improvement. The progress in breeding for drought
tolerance is slow due to the quantitative and temporal
variability of available moisture across years and the low
genotypic variance in yield under drought. Deep and
prolific root system is a high priority trait that can improve
drought tolerance in chickpea. Ten accessions which were
identified as drought tolerant based on drought
susceptible index (DSI) and drought tolerant efficiency per
cent (DTE %) were evaluated during rabi 2006-07 along
with stanadred check Annigeri-1 and drought tolerant
checks ICC 4958 and ICC 10448 under irrigated and rainfed
condition for seed yield and root traits. Wide range of
genetic variability, moderate to high heritability and high
genetic advance for yield and its component traits was
observed in drought tolerant accessions evaluated under
moisture stress and irrigated situations during 2006-07.
Among the drought tolerant genotypes evaluated, ICC
13124 showed maximum yield levels under irrigated (1220
kg/ha) as well as rainfed condition (990 kg/ha). The per
cent reduction in yield was minimum (18.9 %) as compared
to checks under moisture stress for this genotype.
Observations on root length, root weight and root volume
showed that ICC 13124 was equally good in respect of
root traits which can be used in the breeding programme
aimed at drought tolerance.

Keywords: Chickpea, drought tolerance, drought susceptible index, DTE, MII


Year: 2010
Volume: 70
Issue: 2
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906


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