Changes induced by ultraviolet-B (280–320 nm) radiation to vegetative growth and photosynthetic characteristics in field grown Vigna unguiculata L.
作者： Namachevayam Nedunchezhian , Govindasamy Kulandaivelu
DOI: 10.1016/S0168-9452(97)04583-4
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摘要: Abstract The effect of ultraviolet-B (280–320 nm) radiation on growth and photosynthetic characteristics were investigated in field grown Vigna unguiculata L. Plants at ambient plus a 1.8 kJ/m 2 supplementation UV-B for 25 days. supplemental fluence used this experiment simulated 16% depletion stratospheric ozone midday the summer 10N latitude. Exposure to had increased plant height, leaf area biomass. level total chlorophyll unit fresh weight basis showed marginally decreased treated seedlings. No significant difference was seen concentration absorbing compounds RuBP case activity However, when various activities followed isolated chloroplasts, enhanced stimulated whole chain, photosystem (PS) I PS II during first 5 Prolonged treatment under caused inhibition chain activity. artificial electron donor, Mn 2+ failed restore induced loss activity, while DPC NH OH partially restored
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