Online) An Open Access

Vidya, Rajendiran
2015 Online International Journal Available at   unpublished
The differences in the composition of epicuticular wax in the leaves of three varieties of green gram (Vigna radiata (L.) Wilczek) viz. CO-8, NVL-585 and VAMBAN-2 grown under elevated ultraviolet-B (UV-B) radiation is reported. Fully developed third trifoliate leaves from the top of 30 DAS (days after seed germination) green gram crops under supplementary UV-B radiation (2 hours daily @ 12.2 kJ m-2 d-1 ; ambient = 10 kJ m-2 d-1) were used for wax extraction. UV-B exposed CO-8, NVL-585 and
more » ... , NVL-585 and VAMBAN-2 varieties of green gram accumulated 69.79, 64.43 and 55.68 % of foliar epicuticular waxes over the respective control plants. Wax samples from the leaves of control and UV-B exposed CO-8 resolved into five components. NVL-585 and VAMBAN-2 varieties under normal and UV-B exposed conditions resolved into three major components only. In all the varieties of green gram the three major spots corresponded to alkanes, monoesters and aldehydes, while the two minor spots in CO-8 were identified as primary and secondary alcohols. An intense spot corresponding to aldehydes appeared in control and UV-B stressed samples of VAMBAN-2 variety.
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