牛粪水提液对大黄种子萌发活力的影响

Effect of Water Extract of Cow Dung on Rhubarb Seed Germination Vigor

以浓度为5、10、20、40g/L的牛粪水提液处理大黄种子,以蒸馏水为对照,采用培养皿纸上发芽法,研究了不同浓度梯度牛粪水提液对大黄种子萌发活力的影响,以期为提高大黄种子发芽率提供科学参考。结果表明：大黄种子的萌发活力表现为在浓度为0～10g/L时,随着牛粪水提液浓度的逐渐升高,大黄种子的萌发活力呈升高的趋势,在供试浓度为10g/L时种子萌发活力达最大值,然后随着牛粪水提液浓度的升高,大黄种子萌发活力呈降低趋势,且在浓度为40g/L时与对照相比,牛粪水提液对大黄种子萌发活力表现出一定的抑制作用。

Using water extract of cow dung（the concentrations were 5g/L,10g/L,20g/L,and 40g/L,taking water as CK）to soaked rhubarb seed,the effect of different concentration water extract of cow dung on the seed germination rate of rhubarb was studied by using a method of germination test on paper.The results showed that rhubarb seed germination was different when taking different concentration gradient.The germination rate was increased with the cow dung water extract concentration increased between 0to 10g/L,and the greatest germination rate was 10g/L.Then seed germination rate was decreased with concentration increased of water extract of cow dung.And it showed an inhibiting effect on seed germination rate in concentration of 40g/L water extract of cow dung.The results suggested that it was ideal conditions of water extract of cow dung for rhubarb seed germination at concentration of 10g/L.