5%氨基寡糖素对黄瓜种子萌发及苗期诱抗促生影响的研究

Study on the Effect of 5% Amino-oligosaccharide on Seed Germination and Induced Resistance and Growth at Seedling Stage of Cucumber

为明确氨基寡糖素对黄瓜种子萌发及苗期诱抗促生效果,采用纸上法和穴盘法,设置5%氨基寡糖素500倍液、800倍液、1 000倍液和1 200倍液4个浓度,对黄瓜种子发芽率、发芽势、发芽指数及幼苗株高、茎粗、根质量、根长等指标进行测定。结果表明:5%氨基寡糖素800倍液对黄瓜种子萌发具有较好的促进效果,发芽率和发芽势均最高,分别为98.19%和31.71%,发芽指数为21.04,居第2位。5%氨基寡糖素1 000倍液处理的黄瓜幼苗茎粗、地上部鲜质量、根质量、株高和根长均最高,分别为3.12 mm、1.35 g、0.39 g、18.85 cm和9.33 cm,其中根质量与5%氨基寡糖素800倍液处理并列。

In order to clarify the effects of amino-oligosaccharides on seed germination and induced resistance and growth at cucumber seedling,paper method and hole plate method were used,and four concentrations of 5% amino-oligosaccharide were set,including 5% amino-oligosaccharide 500 times solution,800 times solution,1 000 times solution and 1 200 times solution.The germination rate,germination potential,germination index of cucumber seeds and plant height,stem diameter,root weight and root length of cucumber seedling were measured.The results showed that 5% amino-oligosaccharide 800 times solution had better promoting effect on germination of cucumber seed with the highest germination rate and germination potential of 98.19% and 31.71%,respectively,and a germination index of 21.04,ranking second.The cucumber seedlings treated by 5% amino-oligosaccharide 1 000 times solution had the highest stem diameter,fresh aboveground weight,root weight,plant height and root length with values of 3.12 mm,1.35 g,0.39 g,18.85 cm and 9.33 cm,respectively.The root weight was parallel to that treated by 5% amino-oligosaccharide 800 times solution.