白背飞虱在抗感稻株上分泌蜜露的氨基酸成分分析

Analysis of Amino Acid Composition in Honeydew Excreted by Sogatella furcifera on Resistant and Susceptible Rice Plants

白背飞虱吸食水稻植株的韧皮部,影响其正常生长。近年来,由此而引起的水稻产量损失愈加明显。推广种植抗虫品种有效地阻止了飞虱在其上取食与建立种群,在防治此虫中发挥了十分重要的作用。水稻抗虫品种对白背飞虱产生的不良影响是多方面的。为了探索稻株韧皮部内营养成分对飞虱的影响,我们采用间接的方法分析了飞虱取食抗感稻株后分泌的蜜露中氨基酸的成分与含量。1 材料与方法1.1

Honeydew excreted by Sogatella furcifera on rice plants of selected varieties was collected and, total free amino acid (TFAA) and individual amino acids in honeydew were analyzed. Amounts of TFAA in honeydew from resistant varieties were significantly lower than from susceptible TN1. 19 amino acids were detected in honeydew excretion from both resistant and susceptible rice plants and predominant amino acids were glutamic acid, aspartic acid, valine and serine. Quantity of each amino acid in honeydew from resistant Rathu Heenati was significantly lower than that from TN1.