Impact of Biochemical Constitute Responsible for Resistance against Maruca vitrata (Fabricius) in Different Genotypes of Mungbean

Green gram also known as mung bean (Vigna radiata L.) which is a versatile and drought resistant pulse crop widely grown for its high nutritional value and play an vital role in crop rotation. It can be cultivated in the diverse climates and soil types which makes it important cash crop for farmers.

The experiment was conducted during the summer 2021 and 2022 at the Crop Research Centre of S.V.P. University of Agriculture and Technology to investigate the presence of M. vitrata on the various promising varieties and genotypes mungbean. Samples were collected from the immature plants. The experiment was conducted to estimate the biochemical constitutes viz. total soluble sugar, phenols, proteins and reduced sugar.

Among all genotypes, Phenol content varied between 6.38 to 8.94. The maximum protein content was recorded in IPM-2-K-14-9(8.94 mg/g). Studies on the correlation between genotype’s phenol content, M. vitrata damage (r=-0.712*) and number of larvae (r=-0.809*) had a significant negative correlation. The amount of protein content ranged between 11.09 to 18.95. KM-2328 (11.09 mg/g) had less amount of protein. The protein content with the number of larvae (r=0.581*) had a significant positive correlation. The percentage of pod damage was connected with protein content (r=0.550*) followed a similar pattern and had the significantly positive correlation. Sugar content of various genotypes varied between 10.52 to 19.76 mg/g. The maximum sugar content was recorded in SML-668 (19.76 mg/g) followed by the KM-2241 (19.47 mg/g), IPM-302-2 (19.01 mg/g), T-44 (18.42 mg/g) and K-851 (17.66 mg/g). The estimation range of reducing sugar content was 6.76 to 14.39 mg/g. The maximum reduced sugar was estimated in KM-2241(14.39 mg/g) and MH 421 (6.76 mg/g) had less amount of reducing sugar. The sugar was positively correlated with number of larvae and damage percentage done by M. vitrata.