硒浸种对番茄种子萌发的影响

以番茄(Lycopersicon esculentum Mill)种子为研究材料,设置了7个硒(Selenium)浸种浓度(0、0.5、2.0、4.0、6.0、8.0、10.0mg·L-1),研究了不同浓度的硒浸种处理对番茄种子萌发的影响.结果表明,低浓度的硒处理(0-4.0mg·L-1)对番茄种子的萌发有促进作用.在硒的浓度为4.0mg·L-1时,其发芽率最大,种子萌发第7天时的芽鲜重、根鲜重、芽长、根长、芽干重和根干重也达到了最大值;而高浓度的硒处理(>4.0mg·L-1)则表现为一定的抑制作用.

The Effect of Selenium on Seed Germination of Lycopersicon esculentum

The study dealt with the efect of Selenium on germination of Lycopersicon esculentum seeds in different concentrations of Se solution (0,0.5,2.0,4.0,6.0,8.0 and 10.0 mg·L~(-1)). The results showed that the germination rate of the soaked seeds increased when the concentration of Se solution was from 0 to 4.0 mg· L~(-1). The germination rate of the seeds reached the highest at the concentration of 4.0mg·L~(-1). The fresh weight,dry weight and length of roots and buds at the seventh day all reached the highest at this concentration. High concentration of Se treatment (>40mg·L~(-1)) restrained the seeds germination.