钙减轻紫外辐射伤害小麦幼苗的研究

Alleviation of Damage on Wheat Seedlings Under Ultraviolet B-Radiation in the Presence of Calcium

采用室内水培实验方法,研究了紫外辐射(UV-B,280—330nm)对小麦幼苗的伤害与钙缓解紫外辐射伤害小麦幼苗的效应。结果表明,在紫外辐射胁迫下,低钙水平小麦的根长,根体积,根鲜重、干重,根数,苗高,叶面积,伤害面积,叶鲜重、干重等生长指标均明显低于对照植株。而高钙处理的小麦幼苗,各种生长指标的降幅低于低钙水平小麦幼苗。表明钙具有缓解紫外辐射伤害小麦幼苗的效应。

Mitigative effect of calcium on wheat seedlings under UV-B(280—330 nm) radiation was studied. The results showed that the growth indexes of wheat seedlings on root length, volume, fresh weight, dry weight, and plant height, leaf number, leaf area, leaf damage area, leaf fresh weight and leaf dry weight with low calcium treatment were obviously reduced than wheat seedlings in control under UV-B stress. The decreasing degree of growth indexes for wheat seedlings in high calcium treatment were lower than in low calcium treatment. It is concluded that calcium can mitigate the damage of UV-B radiation on wheat seedlings.