| 家蚕温度敏感型致死基因ntl的遗传分析 |
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| 引用本文： | 张志芳,秦俭.家蚕温度敏感型致死基因ntl的遗传分析[J].蚕业科学,1999,25(3):141-143. |
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| 作者姓名： | 张志芳 秦俭 |
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| 作者单位： | 农业部家蚕生物技术重点开放实验室,中国农业科学院蚕业研究所,镇江,212018 |
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| 摘 要： | 从中系地方品种余杭７ 中发现１ 个新的温度敏感型致死基因ｎｔｌ，该基因的特点为：５ 龄期幼虫在平均温度为２３３ ℃时，幼虫生命率只有１０７％ ，而当５ 龄蚕在平均温度为２９４℃饲养时，幼虫生命率为９００ ％ 。经分析该性状受１ 对隐性基因所控制，可能是ｏｃ 油蚕的等位基因或与ｏｃ 油蚕基因存在着紧密的连锁关系，属于第５ 连锁群。
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| 关 键 词： | 温度致死 遗传分析 育种材料 |
| 修稿时间： | 1999－03－23 |
Genetic Analysis of Normal Temprature Lethal Gene (ntl) in the Silkworm Bombyx mori |
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| Zhang Zhifang,Qin Jian.Genetic Analysis of Normal Temprature Lethal Gene (ntl) in the Silkworm Bombyx mori[J].Acta Sericologica Sinica,1999,25(3):141-143. |
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| Authors: | Zhang Zhifang Qin Jian |
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| Abstract: | A new natural mutant:normal temperature lethal gene (ntl) was found from Chinese bivoltine native variety Yuhang7.The Characters of ntl gene were that if the fifth instar larvae were reared at the temperature of 23.3℃,the viability was 10.7%;But when the fifth instar larvae were reared at the temperature of 29.4℃,the viability was 90%.The genetic analysis showed that the ntl gene was controlled by a recessive gene.The further research confirmed that the ntl gene was located at the fifth chromosome and deduced maybe the ntl is a allele of oc translucent silkworm or has closely linkage relation with oc . |
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| Keywords: | Temperature lethal Genetic analysis Breeding material |
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