6株放线菌定殖能力测定及对苹果灰霉病控制效果

通过菌药结合试验,测定了6株生防菌株在套袋苹果和叶片表面定殖能力以及它们对苹果表面真菌的控制能力,并分别测定了其发酵液、菌悬液及发酵滤液对采后苹果灰霉菌(Botrytis cinerea)的抑制效果.结果表明:菌株15-3在套袋苹果以及苹果叶片上具有很强的定殖能力,对苹果表面的真菌也有较好的抑制效果;菌株SC1能够有效地抑制套袋苹果表面以及苹果叶片表面真菌的生长繁殖;6株生防放线菌发酵液对苹果灰葡萄孢都具有明显的抑制作用,菌株SC1、A3、SE2和15-3的发酵液对苹果灰葡萄孢的控制作用均超过80%,菌株15-3的菌悬液也具有一定的抑制效果.

Colonized Ability of Six Strains of Actinomyces and Their Control Effect on Apple Diseases

Colonized ability of six strains of actinomyces on the surface of apple fruit and leaves were tested,in addition to evaluate their control effect on Botrytis cinerea and other fungi.The result showed that the surface of apple fruits covered with paper bag and leaves could be colonized by strain 15-3; Fungion surfaces of apple fruits and leaves could be controlled by strains SC1 and 15-3; Apple posharvested decay caused by B.cinerea could be inhibited effectively by the fermentation broth of six actinomyces,the inhibition rate of SC1,A3,SE2 and 15-3 surpassing 80%; and the expansion of the disease even could be impacted by the suspension of 15-3.