摘要
以从印度、朝鲜引进的2个柞蚕品种981和941为亲本,采用杂交育种技术,选育出柞蚕早熟多抗新品种早418,并与现行抗病高产品种抗大组配杂交组合早418×抗大。新品种早418及其杂交组合具有以下特点:春、秋季幼虫全龄期经过短,早418平均比抗大短8.43 d,早418×抗大平均比对照组合抗大×8821短6.90 d;抗病力较强,早418小蚕感染柞蚕核型多角体病毒(ApNPV)后的死亡率比抗大低11.2个百分点,早418×抗大比对照组合低13.6个百分点;产茧量高,早418春、秋季平均千克卵收茧量为46 680粒,比抗大增产11.22%,早418×抗大春季千克卵收茧量为52 360粒,比对照组合增产16.98%,秋季千克卵收茧量为443.44 kg,比对照组合增产24.44%。新品种及其杂交组合既有早熟性状特点,又兼顾抗逆、丰产性能,尤其适合无霜期短的地区推广放养。
Abstract Using two tussah silkworm varieties 981 and 941 which were introduced from Indian and Korean as parents, a new early-maturing and multi-resistant tussah silkworm variety Zao 418 was bred by means of cross breeding. It was further hybridized with Kangda, a current variety with high resistance and yield, to prepare hybrid combination Zao 418 × Kangda. The new variety Zao 418 and its hybrid combination had the following characteristics, short larval duration, strong disease resistance and high cocoon productivity. The average duration of all larval instars in spring and autumn of Zao 418 was 8. 43 d shorter than Kangda, and that of Zao 418 ×Kangda was 6. 90 d shorter than that of Kangda ×8821. The death rate of Zao 418 after infection by Antheraea pernyi nucleopolyhedrovirus （ApNPV） was 11.2 percentage points lower than that of Kangda, and that of Zao 418 xKangda was 13.6 percentage points lower than that of Kangda x8821. The average number of cocoons harvested in spring and autumn from 1 kg eggs of Zao 418 was 46 680, being 11.22% higher than Kangda. The number of cocoons harvested in spring from 1 kg eggs of Zao 418 xKangda was 52 360, being 16.98% higher than Kangda ×8821. The cocoon weight harvested in autumn from 1 kg eggs of Zao 418 × Kangda was 443.44 kg, being 24.44% higher than Kangda × 8821. The new variety Zao 418 and its hybrid combination Zao 418 × Kangda not only have early-maturing feature but also have high resistance and yield, being especially suitable for rearing in the regions with short frost-free period.
出处
《蚕业科学》
CAS
CSCD
北大核心
2013年第1期40-46,共7页
ACTA SERICOLOGICA SINICA
基金
辽宁省"十一五"重大科技攻关项目(No.2008202006)
农业部行业专项(No.3-34-7)
现代农业产业技术体系专项(No.CARS-22)
关键词
柞蚕品种
早418
早418×抗大
早熟
抗病
丰产
Tussah silkworm variety
Zao 418
Zao 418 ×Kangda
Early maturation
Disease resistance
High yield
作者简介
第一作者信息：朱有敏（1962-），女，研究员。E—mail：zhym315@163．com
