南方农业学报2017，Vol.48Issue(11)：1969-1975,7.DOI:10.3969/j.issn.2095-1191.2017.11.07
朱砂叶螨不同侵染时间对木薯生理指标的影响
Effects of Tetranychus cinnabarinus infection time on physiological parameters of cassava
摘要
Abstract
[Objective]In order to provide theoretical basis for breeding mite-resistant cassava varieties,changes of physiological parameters of different cassava varieties were investigated after being infested by Tetranychus cinnabarinus.[Method]The population quantity of T. cinnabarinus were explored on cassava varieties SC8,Nanzhi 199,and SC205 through field investigation. The physiological and biochemical parameters including contents of chlorophyll,soluble su-gar,soluble protein,free proline,malonaldehyde(MDA),superoxide dismutase(SOD)activity and peroxidase(POD)ac-tivities of leaves infested by T. cinnabarinus(treatment)and healthy leaves(control)were compared with pot method.[Result]The population quantity of T. cinnabarinus on different cassava varieties appeared a peak during the period of in-vestigation(near October 30). Largest population quantity at the peak was showed on SC205(105.6±6.9 T. cinnabarinus/leaf),followed by Nanzhi 199(53.2±8.6 T. cinnabarinus/leaf),the smallest quantity was on SC8(38.7±3.8 T. cinnabari-nus/leaf). Compared with control group at the same period,the chlorophyll content of all cassava varieties decreased after being damaged by T. cinnabarinus;soluble sugar,soluble protein,free proline and MDA content increased firstly and then decreased generally,activities of SOD and POD showed a rising tendency overall. Soluble sugar,soluble protein,free pro-line content,and activities of SOD and POD of mite-resistant variety SC8 had larger increase range than that in the con-trol. However mite-susceptible variety SC205 had smaller increase range in terms of the above parameters.[Conclusion]During feeding press of T. cinnabarinus,different cassava varieties present significant differences in soluble sugar con-tent,soluble protein content,free proline content,activities of SOD and POD. It is referred that the variation of these pa-rameters can be used to identify mite resistance of cassava varieties.关键词
朱砂叶螨/木薯/生理生化指标/抗螨性Key words
Tetranychus cinnabarinus/cassava/physiological and biochemical parameter/mite resistance分类
农业科技引用本文复制引用
杨娟,周琼,黄京华,邹海霞,陈宇鑫,邱静思,王国全..朱砂叶螨不同侵染时间对木薯生理指标的影响[J].南方农业学报,2017,48(11):1969-1975,7.基金项目
广西自然科学基金项目(2014GXNSFBA118103) （2014GXNSFBA118103）
