摘要
通过对桃蛀螟(Dichocrocis punctiferalis Guenée)越冬老熟幼虫和蛹过冷却点的测定,初步明确了寄主植物、幼虫体重、性别等因素对其越冬幼虫和蛹抗寒性的影响。取食玉米、高粱和向日葵不同寄主植物的桃蛀螟越冬幼虫的过冷却点差异不显著;幼虫体重与其过冷却点没有显著相关性;幼虫进入越冬状态越早,过冷却点越低;雌、雄越冬幼虫的过冷却点没有显著差异;蛹与越冬幼虫的过冷却点无显著差异;采自不同地区玉米植株上的5个地理种群的越冬幼虫过冷却点差异不显著。
The effects of host plants, weight, sex and different sampling time on cold hardness of overwintering larvae of the yellow peach moth, Dichocrocis punctiferalis Guenee were compared by measuring its supercooling points （SCP） and freezing points （FP）. The results showed that the mean SCP and FP of overwintering larvae feeding on different hosts were not significantly different. No significant correlation was observed between the SCP and larval weight, and also among the larvae feeding on corn, sorghum and sunflower. The mean SCP and FP were significantly different between the overwintering larvae collected in September and October, respectively. No significant difference was found between the male and female larvae. The SCPs of 5 geographic populations （Beijing, Langfang of Hebei Province, Jiaozhou of Shandong Province, Anqing of Anhui Province and Huaihua of Hunan Province） from corn plants were also tested without significant differences.
出处
《植物保护》
CAS
CSCD
北大核心
2009年第2期44-47,共4页
Plant Protection
基金
国家"十一五"科技支撑计划(2006BAD08A06)
关键词
桃蛀螟
越冬幼虫
过冷却点
抗寒能力
Dichocrocis punctiferalis
overwintering larvae
supercooling points
cold hardiness
