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76—21—23品系对皱缩花叶病毒具有田间过敏抗性。经田间观察,花期侵染y病毒后,植株的某一侧枝或主茎从叶片开始产生系统坏死。苗期发病株叶片严重皱缩,茎色逐渐变紫,质地变脆,叶片脱落,全株枯死,不结薯或很少结薯。经接种y病毒后,叶片出现明显叶脉坏死,证明该品系对y病毒产生过敏反应。苗期整株坏死株率的大小,取决于先一年盛花期表现系统性叶脉条斑坏死症病株率的高低。在某一自然生态区,皱缩花叶病毒传毒媒介变化比较稳定时,来年苗期出现“田间免疫”的株率也相应比较稳定。本文提出了对皱缩花叶田间过敏抗性材料利用的讨论意见。
Lines 76-21-23 are allergic to the wrinkled mosaic virus in the field. After field observation, flowering infected y virus, a plant side of the main stem or stem from the leaves began to produce systemic necrosis. Seedling incidence of severe leaf folds, stem color gradually purple, crisp texture, the leaves fall off, the whole plant withered, no tuber or little tuber. After inoculation of y virus, the leaf appeared obvious vein necrosis, which proved that the strain of y virus allergic reaction. Seedling necrosis rate of whole plant size, depending on the performance of the first year full bloom flowering system of systemic disease incidence of leaf spot disease necrosis rate. In a certain natural ecological zone, when the change of contracting mosaic virus transmission medium is relatively stable, the “field vaccination” strain rate in the coming year will be relatively stable. This paper presents a discussion on the use of allergy resistant materials in the field of astringent leaves.