MeSA诱导茶树抗叶蝉取食效应的DC-EPG分析

被引：11

作者：

苗进

韩宝瑜

机构：

[1] 中国农业科学院茶叶研究所

来源：

植物保护学报 | 2008年 / 02期

关键词：

可视直流刺探电位技术; 水杨酸甲酯; 假眼小绿叶蝉; 茶苗; 诱导抗性;

D O I：

10.13802/j.cnki.zwbhxb.2008.02.008

中图分类号：

S435.711 [茶病虫害];

学科分类号：

090401 ; 090402 ;

摘要：

用可视直流刺探电位技术(DC-EPG)记录试虫在3h内呈现的各种EPG波型。共明确7种波型,根据这些波型确定15个描述叶蝉取食行为的EPG参数,以评判茶树抗叶蝉取食特性。与未诱导茶苗(CK)上叶蝉刺吸行为相比,在0.2、0.4和0.8mmol/LMeSA诱导24h的茶苗上,总刺探次数增加,即n(ck)=8.30±1.13,n(0.2)=13.25±3.95,n(0.4)=15.01±2.68,n(0.8)=34.50±7.56;非取食刺探时间明显延长,即NP(ck)=110.97±5.2min,NP(0.2)=128.39±6.76min,NP(0.4)=148.35±6.14min,NP(0.8)=131.94±10.75min;韧皮部取食时间显著减少,即E(ck)=52.90±2.22min,E(0.2)=9.08±2.6min,E(0.4)=8.87±1.44min,E(0.8)=15.89±2.21min。3个MeSA处理剂量相比较,0.4mmol/L的诱导效应最明显。24h与48h诱导时间相比,24h的效应较显著。茶树被诱导之后,对叶蝉的取食适合度明显下降,表明产生了一定程度的抗性。

引用

页码：143 / 147

页数：5

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