科研之友
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摘要
Ethylenediurea (EDU) was applied as soil drench in two Indian cultivars of black gram (Vigna mungo L. cv. Azad-1 and BHU-1) and its ameliorating effect against ozone (O-3) stress was studied on selected growth, physiological, biochemical, and yield characteristics. The study site experienced a high O-3 concentration of 41.3-59.9 ppb during the experimental period. It was found that growth parameters showed positive impact on plants treated with EDU and yield attributes were also higher than that of non-EDU-treated ones. Significant increments in ascorbic acid and protein contents were observed in EDU-treated plants as compared to control plants. Lipid peroxidation, however, showed a reverse trend in both the cultivars. Photosynthetic efficiency increased by EDU treatment as depicted by higher values for photosynthetic rate (Ps) and Fv/Fm ratio. EDU-treated plants had more efficient antioxidant enzyme defense system with higher SOD and POX activities. Both the cultivars showed differential response against O-3 and cultivar BHU-1 proved to be resistant as compared to Azad-1. This investigation proves the usefulness of EDU as a biomonitoring tool against O-3 for the remote areas having higher concentrations of O-3 and problem of frequent electricity failure.
- 出版日期2011-11
