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从我国花生主要产区广东、湖北两省的花生青枯病病株的荚果种子中分离出了花生青枯病菌,病株种子带菌率为5％。采用人工接种花生种子的方法证明花生种子所带病菌的存活力与其含水量有着密切的关系,当种子含水量下降时,病菌的生存力也随之降低。当花生种子含水量降到8.9％时青枯病菌失去了在花生体内的生存能力。表明在播种时花生种子含水量在8.9％以上,则病菌在种子体内仍可存活,并有传播病害的能力。若在花生收获后使含水量控制在8.9％以下,有可能防止带菌种子对青枯菌的传播。
The bacterial wilt of peanut was isolated from the pod seeds of peanut bacterial wilt in Guangdong and Hubei provinces, the main producing areas of peanut in China. The diseased seed germination rate was 5%. The method of artificial inoculation of peanut seeds proved that the viability of the peanut seeds was closely related to the water content of the peanut seeds. When the water content of the seeds dropped, the viability of the bacteria decreased. When the water content of peanut seeds dropped to 8.9%, the bacterial wilt of R. solanacearum lost its viability in peanut. Show that when the peanut seed moisture content is more than 8.9% when sowing, the germs can still survive in the seed body and have the ability to spread the disease. If the moisture content is controlled below 8.9% after peanut harvest, it is possible to prevent the spread of the fungus seeds against R. solanacearum.