Effects of enhanced ultraviolet-B radiation on photosynthesis of maize

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Effects of enhanced ultraviolet-B radiation on photosynthesis of maize

LUO Nanshu¹;ZHONG Zhangcheng²

¹College of Biology and Environmental Sciences,Jishou University,Jishou 416000, China;²Key Laboratory of Ecoenvironments of Three Gorges Reservoir Region,Ministry of Education,School of Life Sciences,Southwest University,Chongqing 400715, China

Received:2005-06-05 Revised:2005-10-28 Online:2006-04-10 Published:2006-04-10

Abstract

Abstract: Under natural conditions,we studied the photosynthesis of maize (Zea mays L.) in its whole life treated with different intensities,i.e.,0 (CK),0.01 (R1) and 0.015 J·m^-2·s^-1(R2) of ultraviolet-B (UV-B) radiation.The results showed that enhanced UV-B radiation reduced the photosynthetic pigment (including chlorophyll a,chlorophyll b,total chlorophyll and carotenoid) contents,Hill reaction activity,stamotal conductance,and net photosynthetic rate of maize seedling’s leaf,but had no effects on the photosynthesis of fully grown plant.

Key words: Cunninghamia lanceolata, Essential oils, Antimicrobial activity, Cedrol

LUO Nanshu¹;ZHONG Zhangcheng². Effects of enhanced ultraviolet-B radiation on photosynthesis of maize[J]. cje.

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Effects of enhanced ultraviolet-B radiation on photosynthesis of maize

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