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小麦矮缩病是小麦生产中广泛发生的一种病害,危害相当严重。苗期发生这种病害,植株变矮,分蘖增多,绝大部分不能拔节抽穗。在小麦矮缩病中,一种是已经查明由一种灰飞虱传染的病毒引起的。小麦幼苗患此病毒性病害后,植株变矮,分蘖明显增多,呈丛生,因此被称为丛矮病。近年来,又发现另外一种矮缩病,叫黄条矮缩病(封二图1-3),它与病毒性丛矮病最明显的差别是,丛矮病病株的叶色仍保持绿色,甚至是深绿,而黄条矮缩病病株的叶片(特别是心叶)则呈现黄绿相间的条纹,因此而得名。1966—1969年间,在河南省当时推广的引进品
Wheat dwarf disease is a widespread disease in wheat production that is devastating. Seedling stage of this disease, plant shorter, more tillers, the vast majority can not jointing heading. Among wheat dwarf diseases, one has been identified as being caused by a virus transmitted by a Laodelphax striatellus. Wheat seedlings suffer from this viral disease, the plant becomes shorter, significantly increased tillers, was clustered, it is called dwarf disease. In recent years, another type of dwarf disease has also been found, which is called yellow dwarf disease (Figure 1-3). The most obvious difference from viral dwarf disease is that the leaf color of the dwarf disease strains remains Green, or even dark green, while the leaves of yellow dwarf disease strains (especially the heart) are yellow-green and white stripes, hence the name. 1966-1969, introduced in Henan Province was introduced