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Physiological traits reveal potential for identification of droughttolerant mungbean[Vigna radiata (L.)Wilczek] genotypes undermoderate soil-moisture deficit

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Title Physiological traits reveal potential for identification of droughttolerant mungbean[Vigna radiata (L.)Wilczek] genotypes undermoderate soil-moisture deficit
 
Creator Susheel Kumar Raina, Jagadish Rane, Nikhil Raskar, Ajay Kumar Singh,Venkadasamy Govindasamy,Mahesh Kumar,Sachin Chandrakant Ekatpure and Paramjit Singh Minhas
 
Subject Mungbeans, drought, canopy temperature,SPAD, chlorophyll fluorescence
 
Description Not Available
Canopy temperature is an important physiological trait usedfor screening drought tolerance in several crop plants.Mungbean being often exposed to post-flowering drought,we evaluated a set of 48 genotypes for variability in post-flowering canopy temperature and its association with roottraits and other physiological parameters contributing todrought tolerance under soil-moisture deficit stressconditions. Overall, canopy temperature depressionrevealed significant association with seed yield. Root traitslike number of lateral branches and dry root weight exhibitedsignificant negative correlation with canopy temperature.Leaf SPAD readings were positively associated with grainyield and most of the high SPAD genotypes maintainedhot canopies under drought. Some genotypes withcontrasting variation in SPAD levels (DMG-1050 and SML-1628) maintained their photosystem PSII health at par.Moreover, cool canopy was no guarantee for better PSIIhealth or vice versa. This study identified some cool canopygenotypes (VC-6173-C, IC-325770 and ML-2082) and agenotype (DMG-1050) with novel trait combinations likehigh SPAD and better PSII health despite high canopytemperature which can be used as donors in mungbeanbreeding programs. Present study explores geneticvariation in these adaptation traits contributing to plantperformance under soil-moisture deficit stress conditionsand potential of physiological breeding approaches forgenetic enhancement of this legume crop
ICAR
 
Date 2019-12-09T11:14:30Z
2019-12-09T11:14:30Z
2019-04-15
 
Type Journal
 
Identifier Not Available
0975-6906
http://krishi.icar.gov.in/jspui/handle/123456789/28885
 
Language English
 
Publisher Indian Society of Genetics & Plant Breedin