光照对沙芥种子萌发中生理生化指标的影响

Effect of Light on Physiological and Biochemical Indexes of Pugionium cornutum(L.) Gaertn Seeds in Germination

以沙芥种子为实验材料,以24h黑暗处理为对照,研究了光照对其萌发过程中主要贮藏物质、内源激素和酚酸类物质含量的影响。结果表明:光照处理的沙芥种子的萌发指标均明显低于黑暗处理,且萌发过程中脂肪和淀粉的降解、淀粉酶活性、可溶性糖的增加也显著低于黑暗处理;在萌发的前2d,光照处理的种子ABA、酚酸类物质总量、没食子酸、对羟基苯甲酸、咖啡酸、香豆酸和肉桂酸含量均高于黑暗处理。

The effect of light on the contents of main store substances, endogenous hormones, phenolic acids of Pugionium cornutum seeds in germination were studied. The results indicated that the germination indexes of seed in light were significantly lower than those in dark. And the degradation of fat and starch, the augment of the amylase and soluble sugar of seed in light were also significantly lower than those in dark in germination. But the contents of ABA, gallic acid, hydroxybenzoic acid, caffeic acid, coumaric acid, cinnamic acid and the total content of phenolic acids in light were on the contrary at the first two days of germination.