铈对紫外辐射B胁迫下油菜幼苗叶绿素含量的影响  

Effects of cerium on chlorophyll content of rape seedlings under ultraviolet-B stress

作　　者：古红梅 陈秀婷 常莉莉 胡利宗 赵锦慧 王俊生 刘红占 范小芳 GU Hongmei;CHEN Xiuting;CHANG Lili;HU Lizong;ZHAO Jinhui;WANG Junsheng;LIU Hongzhan;FAN Xiaofang(College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou 466001, China;Zhoukou First Senior High School,Zhoukou 466001, China)

机构地区：[1]周口师范学院生命科学与农学学院,河南周口466001 [2]周口市第一高级中学,河南周口466001

出　　处：《周口师范学院学报》2017年第5期90-93,共4页Journal of Zhoukou Normal University

基　　金：国家自然科学基金项目(No.41271280);河南省科技厅攻关项目(No.152102110106;172102110165);河南省高等学校重点科研项目(No.16A210043)

摘　　要：采用水培实验方法,研究了铈对紫外辐射B胁迫下油菜幼苗叶绿素含量的影响.结果表明:与对照相比,紫外辐射B胁迫会导致油菜幼苗叶绿素含量及叶绿素a/b比值显著降低,并且对叶绿素a合成的影响大于叶绿素b.20mg·L^(-1)的铈能最大程度缓解紫外辐射B对油菜幼苗叶绿素合成的破坏,较高浓度(≥60mg·L^(-1))的铈则抑制油菜幼苗叶绿素的合成.这说明合适浓度的铈溶液能缓解紫外辐射B胁迫对油菜幼苗的伤害,增强油菜幼苗的抗逆能力.Adopting hydroponic experimental methods to study the effects of cerium on chlorophyll content of rape seedlings under ultraviolet-B stress.The results showed that chlorophyll content and chlorophyll a/b ratio of rape seedlings was reduced significantly under ultraviolet-B stress,and the effects of ultraviolet-B on synthesis of chlorophyll a was greater than that of chlorophyll b.Cerium of20mg·L-1could remit the destruction of ultraviolet-B on synthesis of chlorophyll of rape seedlings extremely,while higher concentration of cerium(≥60mg·L-1)could inhibit synthesis of chlorophyll of rape seedlings.All above showed that suitable concentration of cerium solution could alleviate the damage of ultraviolet-B stress on rape seedlings and enhance resistance of rape seedlings.

关 键 词：油菜幼苗 铈 紫外辐射B胁迫 叶绿素 

分 类 号：S565.4[农业科学—作物学] Q945.78[生物学—植物学]