超重力处理对黄瓜幼苗生理生化指标的影响

Effects of Hypergravity on the Physiological and Biochemical Indices of Cucumber Seedlings

以1 000×g1、500×g2、000×g的超重力对刚萌动的黄瓜种子分别处理12、3、h,研究其对黄瓜幼苗生理生化指标的影响。结果表明:处理组黄瓜幼苗的叶绿素a(Chla)含量均高于对照组,叶绿素b(Chlb)含量均低于对照组,总叶绿素含量1 000×g2、h,1 000×g3、h,1 500×g、1 h和2 000×g2、h处理的高于对照组。处理组丙二醛(MDA)含量、过氧化物氧(POD)活性高于对照组,而处理组过氧化氢酶(CAT)活性、超氧化物酶(SOD)活性均低于对照组。超重力处理可提高黄瓜对逆境的适应性,作为一诱变条件可用于植物的抗逆育种实践中。

Cucumber was used as plant material in the experiment： Germination of alfalfa seeds were treated with 1000×g, 1500×g, 2000×g for 1,2,3 hours to investigate the responses of physiological and biochemical indices. The results indicated：The content of Chla cucumber seedling increased, but Chlb decreased, Chlorophyll content of cucumber seedlings increased under 1000×g, 2 h, 1000×g, 3 h, 1500×g, 1h and 2000×g, 2 h treatments. The content of malondialdehyde and POD activity of cucumber seedlings increased but the CAT activity and the SOD activity decreased, different hyperg-ravity could enhance adapt adversity of cucumber seedlings, and it could serve as a way of breeding.