为植物病毒病的一种病征症。即在茎梢或叶细胞内有病毒繁殖时,叶绿体发育不良,或叶绿素减少,由此而引起黄化或白化,使病叶或新生叶变成黄-黄绿色,此现象称为失绿
随着更多新 的叶色突变体类型如淡绿(Virescent)、斑马(Zebra)、失绿(Chlorina)等的出现,传统的突 变体分类的方法已经不完全适用,同时基于叶色表型的分类方法并不能有效区分不同突变机 制导致的类似突变。
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果树缺铁失绿症这一世界性的世纪难题,是人们一直以来关注的问题。
Fruit trees' iron deficiency is a worldwide problem and a global question that attracting many people's attention.
结果表明:各种补铁措施均可提高叶片中活性铁及叶绿素含量,使黄叶病树病梢率和失绿级数下降。
The result indicated that all the addition of Fe treatments can increase the content of Fe and chlorophyll of leaves, and the ratio of chlorosis branches and grades of chlorosis were decreased.
用腹接取代劈接和切接作为果树高接更新品种的方法对于克服缺铁失绿症、促进更新品种生长具有重要意义。
It is important to replace cleft grafting and cutting grafting with belly grafting as a method of top working to correct chlorosis and improve growth of new cultivar.
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