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本文研究了影响大豆花叶病毒种子传毒及种子斑驳的有关因素,以及种子传毒与种子斑驳的关系。结果表明,种子传毒率的高低受大豆品种,大豆花叶病毒(SMV)毒株,大豆感病早晚以及环境条件的影响。这些因素之间对种子传毒还存在交互作用。供试的12个大豆品种中,传毒率最高的为47%,最低的为25%;包括SMV Ⅰ,Ⅱ,Ⅲ号3个株系群的8个毒株在东农64—3513上传毒率的变化范围为1—33%,在抗霉2号上的变化范围为9—48%;大豆在开花以前感染SMV,种子传毒率可达45%,开花以后感病,种子基本不能传毒。种子斑驳率因大豆品种,SMV毒株不同而异,并受品种与毒株交互作用的影响。种子斑驳既不代表种子带毒,也不代表种子传毒;从感病植株上采收的大豆种子,其斑驳种子与非斑驳种子的传毒率基本相同(P>0.05),因此,不能从种子斑驳率预测种子传毒率。
In this paper, the factors affecting the seed germination of soybean mosaic virus and seed mottling were studied, and the relationship between seed transmission and seed mottling was studied. The results showed that the rate of seed toxin transmission was affected by soybean varieties, soybean mosaic virus (SMV), soybean susceptibility and environmental conditions. There is also an interaction between these factors on the transmission of seeds. Among the 12 soybean cultivars tested, the highest transmission rate was 47% and the lowest was 25%. Eight strains including 3 strains of SMV Ⅰ, Ⅱ and Ⅲ were infected at Dongnong 64-3513 The rate of change ranged from 1-33%, ranging from 9-48% in the anti-mildew 2; Soybean infected with SMV before flowering, the rate of seed toxin up to 45%, after flowering, the seed can not pass poison. Seed mottling rate due to soybean varieties, SMV strains vary, and the variety and strain interaction. Seed mottling neither represents seed poisoning, nor does it represent seed poisoning; the soybean seed harvested from susceptible plants has substantially the same rate of spread of mottled and non-mottled seeds (P> 0.05) Seed mottling rate predicts the rate of seed poisoning.