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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (14): 132-136.doi: 10.11924/j.issn.1000-6850.casb14110116

所属专题： 玉米

• 植物保护 农药 • 上一篇    下一篇

日龄和冷藏时间对玉米螟赤眼蜂寄生卵存活力的影响

张 烨,连梅力,李 唐,朱文雅   

  1. (山西省农业科学院植物保护研究所/农业有害生物综合治理山西省重点实验室,太原 030031）
  • 收稿日期:2014-11-19 修回日期:2015-04-10 接受日期:2014-12-05 出版日期:2015-06-02 发布日期:2015-06-02
  • 通讯作者: 李唐
  • 基金资助:
    山西省回国留学人员科研资助项目“玉米螟卵赤眼蜂研究与利用”(2012-108)；山西省科技攻关计划项目“鲜食糯玉米玉米螟安全控制技术研究、集成与应用示范”(20080311002-6)；山西省农科院育种工程项目“主要害虫赤眼蜂资源评价与利用”(11yzgc146)。

The Effects of Age and Refrigerating Time on Viability in Eggs Parasitized by Trichogramma ostriniae

Zhang Ye, Lian Meili, Li Tang, Zhu Wenya   

  1. (Institute of Plant Protection, Shanxi Academy of Agricultural Sciences/Shanxi Key Laboratory of Integrated Pest Management in Agriculture, Taiyuan 030031)
  • Received:2014-11-19 Revised:2015-04-10 Accepted:2014-12-05 Online:2015-06-02 Published:2015-06-02

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摘要： 玉米螟赤眼蜂是一种重要的寄生性天敌，日龄及冷藏时间是影响其寄生卵存活力的重要因子。为了弄清日龄和冷藏时间对玉米螟赤眼蜂寄生卵低温下存活力的影响，采用正交试验方差分析法检验了在不同日龄、不同冷藏时间下玉米螟赤眼蜂的寄生卵数、出蜂卵数和出蜂率差异。结果显示：当发育到不同日龄后冷藏，其寄生卵数在4日龄达到最大，出蜂卵数在2、3日龄最高，而出蜂率的峰值则出现在1、2日龄；当冷藏时间不同时，其寄生卵数在60、90天时达到最大，出蜂卵数在处理组间无差异，而出蜂率的峰值则出现在20天。研究表明日龄和冷藏时间均能不同程度的影响玉米螟赤眼蜂寄生卵的低温发育和冷藏后的出蜂情况，当龄期较早或冷藏时间较短时，其寄生卵存活力也会更强。因此当规模化生产应用时，需充分考虑日龄及冷藏时间对低温耐受性的影响，藉此以提高玉米螟赤眼蜂的低温贮藏效能。

关键词: 光谱指数, 光谱指数, 苹果叶片, 水分含量, 估算模型

Abstract: Trichogramma ostriniae is an important parasitic natural enemy. Age and refrigerating time are important factors affecting its viability. In order to figure out the impacts of age and refrigerating time on viability in T. ostriniae at low temperature, orthogonal test and variance analysis were carried out to analyze the differences of parasite number, emergence number and emergence rate in different age or at different refrigerating time. The results showed that the maximums of parasite number, emergence number and emergence rate were separately in 4 days, 2-3 days, 1-2 days of age when refrigerated at different stages. The maximums of parasite number and emergence rate were on 60 days or more, and 20 days, respectively, but there were no significant differences in emergence number among treatments when refrigerated for different days. It indicated that age and refrigerating time could influence the process of development at lower temperature and emergence after refrigeration of T. ostriniae. The viability was higher when refrigerated at early stage or in a short period. Therefore, the effects of age and refrigerating time need to be considered for improving T. ostriniae cold-tolerant performance in mass production.