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苹果高接病是一种病毒病害,发生在日本和南朝鲜.日本在本世纪30年代,为了改变苹果品种组成,适应商品生产需要,从美国引入带有病毒的元帅系品种接穗,在国光、红玉等老品种树上实行高接换种.由于日本使用的苹果砧木圆叶海棠和三叶海棠,分别对潜伏于元帅系品种中的褪绿叶斑病毒(Chlorotic leaf spot virus=CLSV)和茎痘病毒(Stem pitting virus=SPV)非常敏感,高接2-3年后,病毒侵染,导致根部韧皮坏死和木质部发生茎痘斑而使生长衰弱乃
In the 1930s, in order to change the composition of apple varieties and adapt to the needs of commodity production, Japan introduced the mash-type scion with the virus from the United States. In the countries of Guoguang, Red jade and other elite varieties of trees for the high accession due to Japan’s apple rootstock Begonia lobatotum and Begonia, were latent in the Marshal varieties of chlorotic leaf spot virus (Chlorotic leaf spot virus = CLSV) and stem Pox virus (Stem pitting virus = SPV) is very sensitive, high 2-3 years after the virus infection, leading to root phloem necrosis and xylostomycin growth and growth is weak