Yield and physiological responses of mungbean Vigna radita (L.) Wilczek genotypes to high temperature at reproductive stage

DOI: 10.18805/LR-3795    | Article Id: LR-3795     | Page : 557-562  
Citation :-
Yield and physiological responses of mungbean Vigna radita (L.) Wilczek genotypes to high temperature at reproductive stage
.Legume Research-An International Journal.2018.(41):557-562

G. Chand, A. S. Nandwal, N. Kumar, Sarita Devi and S. Khajuria

G. Chand, A. S. Nandwal, N. Kumar, Sarita Devi and S. Khajuria gurdev74@gmail.com
Address : Department of Botany and Plant Physiology, Chaudhary Charan Singh Haryana Agricultural University, Hisar-125 004, Haryana, India
Submitted Date : 18-10-2016
Accepted Date : 9-03-2018


A study was conducted to examine the physiological responses and yield of contrasting mungbean genotypes viz, MH 421, MH 318 and Basanti differing in their sensitivity to high temperature raised in earthen pots (30 cm diameter) filled with 5.5 kg of dune sand (Typic Torrispamments) under screen house conditions. High temperature stress was given by manipulating sowing dates i.e. normal (12th March, 2013) and late (29th March, 2013) sown. Samplings were done at 3 and 7 days after exposure (DAE) of temperature above 35°C at reproductive stage. Sampling below 35°C temperature was considered as control. High temperature resulted in decreased chlorophyll stability index, chlorophyll and carotenoid contents, relative stress injury and yield. Sensitive genotypes showed large reductions in aforementioned physiological traits. On the other hand, tolerant genotype (MH 421) maintained higher chlorophyll stability index, chlorophyll and carotenoid contents, relative stress injury and yield. After 7 days of exposure to high temperature under late sown, A significant decrease was noticed in genotypes MH 318 and Basanti. 


Chlorophyll and carotenoid contents Chlorophyll stability index High temperature Relative stress injury Vigna radiata (L.) Wilczek.


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