首页分享球孢白僵菌与食诱剂对西花蓟马的联合作用

球孢白僵菌与食诱剂对西花蓟马的联合作用

来源：花匠小妙招时间：2025-01-02 00:22

摘要： 为发展球孢白僵菌和食诱剂联合应用对西花蓟马的防控技术，本研究在室内测定了不同条件下食诱剂对球孢白僵菌分生孢子萌发的影响，在温室测定了食诱剂相对球孢白僵菌接种装置不同位置对球孢白僵菌分生孢子萌发率、蓟马引诱量和装置外蓟马侵染量的影响。室内结果表明：开放空间下，孢子萌发率随食诱剂距球孢白僵菌的距离增加而增加，当距离为20 cm时，孢子萌发率与对照无差异。温室结果表明：食诱剂放置于接种装置内时，孢子萌发率为23.4%，显著低于食诱剂距装置0 cm（42.9%）、10 cm（43.9%）和20 cm（46.5%）三个处理以及对照（56.3%）。当食诱剂距接种装置0 cm时，接种装置吸引到的蓟马数量最高；而食诱剂置于接种装置内时，装置对蓟马的引诱效果最差。装置外蓟马侵染效果显示：食诱剂距接种装置10 cm时，装置周围植株上蓟马获菌量最高，且显著高于其他处理。同时，随着时间的延长，接种装置周围植株上蓟马获菌量逐渐增加。球孢白僵菌和食诱剂联合应用可建立起“诱集-侵染-传播”系统，为西花蓟马新型防治技术研发奠定基础。

关键词: 球孢白僵菌, 食诱剂, 西花蓟马

Abstract: To develop a control technology for the western flower thrip by the combined application of Beauveria bassiana and food lures, we evaluated the effects of food lure on the germination rate of B. bassiana conidia. In the greenhouse, the effect of distance between food lure and fungi inoculation device on the germination of B. bassiana conidia, the lures’ capacity to capture thrips and the infection of thrips outside the device were examined. The results showed that with increasing distance between the conidia and the food lure, the germination rate increased significantly. There was no significant difference in conidia germination rate when the food lure was 20 cm away from the conidia in comparison with the control. In the greenhouse, when the lure was placed in the device, the germination rate of conidia was 23.4%, significantly lower than the control (56.3%) and those when the lure was placed at a distance of 0 cm (42.9%), 10 cm (43.9%) and 20 cm (46.5%) from the device, respectively. When the lure was placed in a distance of 0 cm from the inoculation device, the thrip capture was the highest; and when lure was placed into device, the thrip capture was the lowest. When the lure was placed at a distance of 10 cm from the inoculation device, the number of conidia carried by thrips on plants around the device was the highest, significantly higher than other treatments. Meanwhile, the number of conidia carried by the thrips onto plants around the devices increased with time. The combined application of B. bassiana and food lures can establish an “attract-infect-transmit” system, which helps the development of new management technology for the western flower thrip.

Key words: Beauveria bassiana, food lure, western flower thrips

中图分类号:

S476.1