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Changes in Growth and Yield of Phaseolus mungo L Induced by UV-A and UV-B Enhanced Radiation
Muthukrishnan, Jayakumar,Paulraj, Amudha,Govindaswamy, Kulandaivelu 한국식물학회 2003 Journal of Plant Biology Vol.46 No.1
We investigated the effects of UV-A and UV-B enhanced radiation on plants of phaseolus mungo. Low doses caused varying responses in such growth and yield components as shoot and root lengths, leaf area, fresh mass and dry matter, pod numbers, and seed numbers and weights. Compared with UN-B radiation inhibited development. moreover, both sources of radiation caused reduced yields, although this effect was comparatively less in plants treated with UV-A radiation.
Effect of Low Doses of UV-A and UV-B Radiation on Photosynthetic Activities in Phaseolus mungo L.
( Muthukrishnan Jayakumar ),( Paulraj Amudha ),( Govindaswamy Kulandaivelu ) 한국식물학회 2004 Journal of Plant Biology Vol.47 No.2
The effect of low doses of UV-A (320-400 nm) and UV-B (280-320 nm) radiation on photosynthetic activities in Phaseolus mungo L was investigated under field condition. Supplementation of UV-A enhanced the synthesis of chlorophyll and carotenoids than the UV-B supplemented plants. Significant increase was seen in the concentration of UV-B absorbing compounds of UV-B treated plants. Increase of PS 2 activity in UV-A treated plants was seen. Changes in photosynthetic activity were measured in terms of PS 2 mediated O₂ evolution and Chl a fluorescence.