不同北美海棠品种抗螨性调查

海棠(Malus spp.)是重要的园林绿化植物,北美海棠因其品种多、适应性强、观赏性强等特点在我国园林景观中极有发展潜力。山楂叶螨(Tetranychus viennensis Zacher)是海棠的主要害螨,不仅对植物危害严重,还影响园林景观。通过田间调查山楂叶螨在不同北美海棠品种上的种群数量,采用Duncan's多重比较分析方法对调查结果进行研究。结果表明:不同北美海棠品种之间表现的抗螨性差异显著,其中露易莎等12个品种均有较强的抗螨性,王族等4个品种抗螨性次之,绚丽抗螨性最差。

Investigation on resistance of different North American crabapple cultivars to Tetranychus viennensis

Crabapple(Malus spp.)is widely used as ornamental plants in China,which holds an important position in the world gardens.North American crabapples have unlimited portential in landscape and garden because of its abundant cultivars,strong resistance and adaptation,higher ornamental values.Tetranychus viennensis is an important pest of crabapple.The field resistance of the 17 north American crabapple cultivars to T.viennensis were studied under the natural condition.Results indicated that the resistance of the 17 North American crabapple cultivars to T.viennensis was significantly different.Of them,Malus Radiant was the most susceptible,while Malus Louisa,Malus Profusion'and Malus Snowdrift'etc.were the most resistant ones,and others were in between.