IMPACT OF CHEMICAL SPRAY ON SEED LONGEVITY FOR INDUCTION OF SEED DORMANCY IN MUNGBEAN (VIGNA RADIATA L.)Vaibhav Sanjay Magar, Sudheer Kumar Pathak, Shama Parveen and Jai Prakash GuptaAbstract The present investigation was conducted during Kharif, 2022 season at the field of Crop Research Centre (CRC) and Genetics and Plant Breeding Research Lab, School of Agriculture, ITM University, Gwalior, Madhya Pradesh to study the effect of chemical spray on longevity of seed. The experimental material consisted of ten mungbean genotype namely, IPM 2-3, IPM 2-14, Meha, Soorya, Virat, Varsha, Kanika, Vashudha, Heena and Shikha and seven treatments namely, control (water spray), GA3 @ 80 ppm, ABA @ 50 ppm, H2O2 @ 10 mM, MH @ 1000 ppm, KNO3 @ 1 mM and IAA @ 100 ppm applied as foliar spray at 45 and 60 DAS. Longevity of seed observed after storage of 2 months intervals on different parameters like seed viability (TZ test) and electrical conductivity (dS/m). Electrical conductivity (EC) revealed that there was significant difference between the varieties, treatment and their interaction for all the testing months of storage. Numerically lower values were recorded in H2O2 @ 10 mm (T3), irrespective of varieties. In general, higher EC was recorded in MH @ 1000 ppm (T4). It was found that the EC of the varieties were influenced by their interaction with treatments during all the testing months of storage. Seed viability (TZ test) revealed that there was significant difference between the varieties, treatment and their interaction for all months in storage. Numerically lower values were recorded in MH @ 1000 ppm (T4), irrespective of varieties. In general, higher seed viability was recorded in control (T0) in all varieties. There exists a close relationship between induced dormancy on various biochemical parameters which thereby plays a vital role in enhancing longevity of mungbean seeds. |