| 水稻抗条纹叶枯病育种实践与策略 |
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| 引用本文： | 景德道,盛生兰,刁立平,胡春明,张继本,林添资,龚红兵,周义文,钱华飞,杨军.水稻抗条纹叶枯病育种实践与策略[J].安徽农业科学,2008,36(3):917-918,925. |
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| 作者姓名： | 景德道 盛生兰 刁立平 胡春明 张继本 林添资 龚红兵 周义文 钱华飞 杨军 |
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| 作者单位： | 江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400;江苏丘陵地区镇江农科所,江苏句容,212400 |
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| 摘 要： | 目的]培育优质、高抗条纹叶枯病的水稻品种。方法]将镇稻88、镇稻99、徐稻3号和武运粳7号、武粳14进行杂交和回、复交,田间自然接虫,鉴定亲本及后代的抗性。结果]镇稻88、镇稻99、徐稻3号条纹叶枯病田间发病率只有5%左右,抗源均来自一对不完全显性基因Stv-bi;2007年武运粳7号、武粳14年发病率高达40%以上。抗条材料作父本或母本,后代中选到抗条植株的概率达40%;2个抗条材料杂交,后代中选到抗条植株的概率达70%以上。回、复交时抗条材料占50%,后代选到抗条材料的概率占40%,高抗株占15%左右;抗条材料占75%时,后代选到抗条材料的概率占50%,高抗株占20%左右。结论]加强对现有水稻资源的抗性筛选,研究新的抗病基因(或位点)的遗传规律,有助于培育抗条纹叶枯病的水稻品种。
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| 关 键 词： | 水稻条纹叶枯病 灰飞虱 抗性 育种 |
| 文章编号： | 0517-6611（2008）03-00917-02 |
| 收稿时间： | 2007-09-04 |
| 修稿时间： | 2007年9月4日 |
Breeding Practice and Strategy of Rice Resistant to Stripe Disease |
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| JING De-dao et al.Breeding Practice and Strategy of Rice Resistant to Stripe Disease[J].Journal of Anhui Agricultural Sciences,2008,36(3):917-918,925. |
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| Authors: | JING De-dao |
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| Abstract: | Objective] The aim of the study was to breed rice variety with good quality and high resistance to stripe disease.Method] Zhendao 88,Zhendao 99, Xudao 3,Wuyungeng 7 and Wuyungeng 14 were crossed,backcrossed and multiple crossed,inoculated with pests naturally in field and the resistances of parents and offspring were identified.Result] The bacterial bearing rates of stripe disease on Zhendao 88,Zhendao 99 and Xudao 3 in field was only about 5% and all the resistance sources came from a pair of incompletely dominant genes Stv-bi.The bacterial bearing rates of Wuyungeng 7 and Wuyungeng 14 reached higher than 40% in 2007.With materials resistant to stripe disease as male parent or female parent,the possibility of choosing out the plants with resistance to stripe disease among offspring reached 40%.When 2 materials with resistance to stripe disease were crossed,the possibility of choosing out the plants with resistance to stripe disease among offspring was higher than 70%.The materials with resistance to stripe disease accounted for 50% in backcross and multiple cross,the possibility of choosing out the materials with resistance to stripe disease among offspring accounted for 40% and the plants with high resistance accounted for about 15%.When the materials with resistance to stripe disease accounted for 75%,the possibility of choosing out the materials with resistance to stripe disease among offspring accounted for 50% and the plants with high resistance accounted for about 20%.Conclusion] Strengthening resistance screening of rice resources at present and studying the heredity law of new resistance genes(or sites) were helpful for breeding rice variety with resistance to stripe disease. |
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| Keywords: | Rice stripe disease Laodelphax striatellus Resistance Breeding |
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