Screening and identification of black gram( Vigna mungo (L.)) genotypes under cold stress
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Date
2020
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Department of Agricultural Biotechnology, OUAT, Bhubaneswar
Abstract
Cold stress is one of the major abiotic stress factors that reduces the yield and productivity of pulses . Black gram is an important pulse crop that is susceptible to cold stress which in turn affects it‟s productivity in India. Hence , there is a need for identification of black gram genotypes that are tolerant to cold stress and can give it‟s full inherent yield potential by minimising the effect of cold stress. Present study was carried out using 34 genotypes of black gram ( Vigna mungo (L.) ) to study their physiological, morphological and biochemical characteristics in relation to cold tolerance . Cold screening of 34 black gram genotypes at 10 degree classified the genotypes into 3 categories resistant, moderately resistant and susceptible . Among these, the best resistant and highest susceptible ones are used for polybag experiment. Various morphological characters were studied during their growth period in the natural environment. After 15 days , the 1st cold stress was given for 3 days and then the biochemical analysis was planned to be carried out both for cold stressed and control plants. Unfortunately due to shut down of university , I was unable to conduct biochemical analysis . But on the basis of screening parameters( germination percentage, germination index , root and shoot length characteristics) and morphological observations, the genotypes KVK Nayagarh 3 , C3PU31 are resistant and C2Ujala , C4OBG 31 are susceptible to 10 degree centigrade temperature.
Description
TH - 6115