提高家蚕新品种“初日”产卵量的试验  

Experiment on Increasing Egg Yield of New Silkworm Variety“Churi”

作　　者：刘明婷 汪烨城 谷利群 陈玉银[1] LIU Ming-ting;WANG Yi-chen;GU Li-qun;CHEN Yu-yin(College of Animal Sciences,Zhejiang University,Hangzhou 310021,China;Zhejiang Agricultural Technology Extension Center,Hangzhou 310019,China)

机构地区：[1]浙江大学动物科学学院,浙江杭州310021 [2]浙江省农业技术推广中心,浙江杭州310019

出　　处：《蚕桑通报》2021年第4期21-25,共5页Bulletin of Sericulture

基　　金：浙江省农业重大技术协同推广计划(2020XTTGCS02-2)。

摘　　要：针对家蚕天然彩色茧品种"金秋×初日"在试繁育中少数蚕种场出现日系"初日"不产卵雌蛾较多影响制种系数的情况,通过试验设计探讨"初日"不产卵蛾发生的原因,发现"初日"的雌蛾成熟较为缓慢,通过增加感光和交配时长可以显著减少"初日"不产卵蛾发生频率、增加单蛾产卵量,但与不受精卵发生没有相关性。特别是感光时长增加到5 h左右可以达到良好控制"初日"不产卵蛾发生的比例,在制种时"初日"雌蛾早感光、迟交配是非常有效的技术措施。A special experiment was designed to find out why the Japanese strain“Churi”of the new color cocoon hybrid“Jinqiu×Churi”had relatively more female moths that did not lay eggs in some of the silkworm egg farms for testing egg production,which directly affect the seed production coefficient.The experimental results showed that the“Churi”female moths mature slower than most of the practical distributed silkworm varieties.The occurrence frequency of“Churi”female moths that do not lay eggs could be significantly reduced and the number of eggs laid by a single moth could be increased by increasing the duration of light exposure and mating time.But there was no correlation with the occurrence of unfertilized eggs.In particular,when the light-exposure duration is increased to about 5 hours,the proportion of“Churi”female moths that do not lay eggs can be well controlled.Early light exposure and late mating of“Churi”female moths are very effective technical measures in improving egg seed production coefficient.

关 键 词：彩色茧 蚕新品种 “初日” 早感光 迟交配 

分 类 号：S883[农业科学—特种经济动物饲养]