摘要
通过频率分布及多样性评价,对1000多份种质的7个主要病害抗性进行了分析。结果表明,我国烟草种质资源大部分均为感病以上品种。TMV抗性资源相对较丰富,高抗或免疫种质达17%。其余病害抗病资源中,多为抗病或中抗,高抗种质很少,不到2%。我国主要病害抗性种质较为匮乏。
Over1000germplasms' resistance to7main diseases are analysed by using frequency distri-bution and variety estimate.The results show ed that a majority of conserved tobacco germplasms are suscep-tible.Seventeen percent of the germplasms' resistance to TMV including high resistance and immunity is abundance comparatively.The germplasms' resistance to other diseases are mainly in resistant or mediumly resistant level,and the germplasms with high resistance are no more than2%.Tobacco germplasms resisting the main diseases are in shortage.
出处
《中国烟草科学》
CSCD
2004年第3期1-5,共5页
Chinese Tobacco Science
关键词
烟草种质
抗性
分布
多样性
tobacco germplasm
resistance
distribution
variety estimate
