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Waterlogging tolerance in pigeonpea (Cajanus cajan (L.) Millsp.): genotypic variability and identification of tolerant genotypes

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Relation http://oar.icrisat.org/6169/
http://dx.doi.org/10.1017/S0021859612000755
 
Title Waterlogging tolerance in pigeonpea (Cajanus cajan (L.) Millsp.): genotypic variability and identification of tolerant genotypes
 
Creator Sultana, R
Vales, M I
Saxena, K B
Rathore, A
Rao, S
Rao, S K
Mula, M G
Kumar, R V
 
Subject Pigeonpea
 
Description Pigeonpea is an important legume crop of the semi-arid tropics. In India, pigeonpea is mostly grown in areas prone
to waterlogging, resulting in major production losses. It is imperative to identify genotypes that show tolerance at
critical crop growth stages to prevent these losses. A selection of 272 diverse pigeonpea accessions was evaluated
for seed submergence tolerance for different durations (0, 120, 144, 168 and 192 h) under in vitro conditions in the
laboratory. All genotypes exhibited high (0·79–0·98) survival rates for up to 120 h of submergence. After 192 h of
submergence, the hybrids as a group exhibited significantly higher survival rates (0·79) than the germplasm (0·71),
elite breeding lines (0·68) and commercial varieties (0·58). Ninety-six genotypes representing the phenotypic
variation observed during laboratory screening were further evaluated for waterlogging tolerance at the early
seedling stage using pots, and survival rates were recorded for 8 days after completion of the stress treatment. Fortynine of these 96 genotypes, representing the phenotypic variation for waterlogging tolerance, were chosen in
order to evaluate their performance under natural field conditions. The following cultivated varieties and hybrids
were identified as tolerant after three levels of testing (in vitro, in pots and in the field): ICPH 2431, ICPH 2740,
ICPH 2671, ICPH 4187, MAL 9, LRG 30, Maruti, ICPL 20128, ICPL 332, ICPL 20237, ICPL 20238, Asha and MAL
15. These materials can be used as sources of waterlogging tolerance in breeding programmes.
 
Publisher Cambridge University Press
 
Date 2013
 
Type Article
PeerReviewed
 
Format application/pdf
application/pdf
 
Language en
en
 
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Identifier http://oar.icrisat.org/6169/7/JAS_Waterlogging_1-26_2013.pdf
http://oar.icrisat.org/6169/1/Jrn_Agric_Sci_1-13_2012_Ifirst.pdf
Sultana, R and Vales, M I and Saxena, K B and Rathore, A and Rao, S and Rao, S K and Mula, M G and Kumar, R V (2013) Waterlogging tolerance in pigeonpea (Cajanus cajan (L.) Millsp.): genotypic variability and identification of tolerant genotypes. Journal of Agricultural Science, 151 (5). pp. 659-671. ISSN 1469-5146