Abstrait

Impact of ultraviolet radiation on seed germination, growth and physiological response of Bengal gram (Cicer arietinum L.) and Horse gram (Macrotyloma uniflorum L.)

Gandhi N, Rahul K, Chandana N, Madhuri B & Mahesh D

Steady decrease of stratospheric ozone layer and the expansion of ultraviolet radiation intensity were watched in most recent twenty years of the twentieth century. In this study, Bengal gram (Cicer arietinum L.) and Horse gram (Macrotyloma uniflorum L.) were exposed to ultraviolet radiation at 253 nm for different periods of exposure time (0,1,3,5,7,9,11,13,15 and 17 minutes). The impact of UV rays were observed by measuring, percentage of germination, root length, shoot length, fresh weight, dry weight, number of leaves and branches of both Bengal gram (Cicer arietinum L.) and Horse gram (Macrotyloma uniflorum L.) respectively for various durations (0,5,10,15,20,25 and 30th days). The results indicated that, Bengal gram (Cicer arietinum L.) seeds shown significantly positive impact and Horse gram (Macrotyloma uniflorum L.) seeds shown negative impact on all growth and physiological parameters. The results also indicated that as the number of days increases the yellowing of leaves and fall down of leaves were observed in all treatments of Horse gram (Macrotyloma uniflorum L.) seeds, where a significant enhancement of growth observed in all treatments of Bengal gram (Cicer arietinum L.) seeds.