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The development and fecundity of Tetranychus urticae Koch (Acariformes:Tetranychidae) on four different plants and their relationship with the chemical components of plant leaves
Author(s): 
Pages: 1135-1139
Year: Issue:  11
Journal: ACTA ENTOMOLOGICA SINICA

Keyword:  二斑叶螨苹果接骨木苦楝火炬树营养物质单宁抗螨性;
Abstract: 采用海绵水盘法研究了苹果Malus pumila Mill.、接骨木Sambucus illiamsii Hance、苦楝Melia azedarach L.、火炬树Rhus typhina L.对二斑叶螨Tetranychus urticae Koch生长发育和繁殖的影响,并分别采用凯氏定氮法、索氏提取法、蒽酮比色法、Folin-Denis比色法测定了植物叶片全氮含量、粗脂肪含量、可溶性糖含量、单宁含量.结果发现:苹果和接骨木叶片的全氮(分别为2.98%和4.00%)和可溶性糖(分别为19.92%和12.81%)含量较高,有利于二斑叶螨生长发育和繁殖.而火炬树叶片的全氮量(2.60%)、可溶性糖含量(4.98%)最低,单宁含量(11.45%)最高,对二斑叶螨具有较强的抗性.单宁可能是植物抗螨性形成过程中起主要作用的次生物质.
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