3-甲基-1-丁醇对玉米和小麦种子萌发的影响

Effects of 3-methyl-1-butanol on Seed Germination and Seedling Growth of Maize and Wheat

植物的根际促生菌能使植物增产,其中菌群产生的挥发性成分起重要作用。3-甲基-1-丁醇(3-methyl-1-butanol),即异戊醇,作为一种常见的微生物挥发性有机成分,但3-甲基-1-丁醇对高等植物种子萌发和生长的影响尚鲜见报道。本文研究了3种浓度(1、10和100 mg·L^(-1))的3-甲基-1-丁醇对小麦和玉米种子萌发的影响。结果表明,1和10 mg·L^(-1)的3-甲基-1-丁醇处理均可提高玉米和小麦种子的活力指数;在低浓度的3-甲基-1-丁醇处理下,玉米和小麦种子可溶性糖和可溶性蛋白质含量减少,而幼芽SOD活性和叶绿素含量比对照组显著增加。本文研究表明,3-甲基-1-丁醇在适宜的浓度下可以促进玉米和小麦生长。

Plant rhizosphere growth-promoting bacteria can promote plant growth, and the volatile components produced by the flora play an important role. 3-methyl-1-butanol, i.e. isoamyl alcohol, is a common volatile organic component of microorganisms. However, the effect of 3-methyl-1-butanol on seeds germination and the growth of higher plants is still unknown. In this paper, the effects of three concentrations（1, 10 and 100 mg·L^ -1 ） of 3 -methyl-1-butanol on the germination of wheat and maize seeds were studied. Two contents of 1 and 10 mg·L^ -1 of 3-methyl-1-butanol increased the vigor index of maize and wheat seeds; under low contents of 3-methyl -1-butanol treatment, the content of soluble sugar and soluble protein in maize and wheat seeds decreased, while the SOD activity and chlorophyll content in germs increased significantly compared with the control group. Therefore, 3-methyl-1-butanol can promote maize and wheat growth at appropriate concentrations.