摘要
采用水培实验法研究了稀土La(Ⅲ)对紫外辐射(UV-B:0.15Wm-2,0.45Wm-2)胁迫下大豆(Glycinemax)幼苗体内O2-和H2O2积累、抗坏血酸过氧化物酶(AsA-POD)活性变化和叶绿素(chl)光氧化降解的影响。实验结果表明:La(Ⅲ)可降低大豆幼苗体内的O2-和H2O2含量、提高AsA-POD的活性,从而减轻光氧化作用对大豆幼苗chl的降解及对植株的伤害。
The influence of Lanthanum （La） on light oxidation of soybean （Glycine max） seedling under elevated uhraviolet-B radiation （UV-B： 0. 15Wm^-2, 0.45Wm^ -2 ） was studied. The accumulation of O2^- , H202 , the changes of activity of AsA-POD and the effects of chlorophyll degradation caused by light oxidation. It was concluded that La could reduce the content of O2^- and H2O2 in the soybean seedling and increase the activity of AsA-POD. Therefore, La alleviated the chlorophyll degradation and the damage of soybean seedling caused by light oxidation.
出处
《中国农业气象》
CSCD
2007年第4期386-388,共3页
Chinese Journal of Agrometeorology
基金
国家自然科学基金(30570323)
国家发改委稀土专项基金(IFZ20051210)
关键词
LA
UV—B辐射
大豆幼苗
光氧化作用
Lanthanum （La）
Uhraviolet-B radiation
Soybean seedling
Effect of light oxidation
