优质抗病烤烟种质资源的筛选（续）

本项目是为筛选出更多的品质优良和抗主要病害的烟草种质资源推荐给育种者利用而设立的。通过田间鉴定，从125个烤烟种质资源中初步筛选出11个综合表现较好的种质资源，采用人工接种方法开展主要病害抗性鉴定；采用随机区组设计，重复3次，以K326为对照进一步进行田间鉴定评价。结果表明：福泉大鸡尾、筑波1号等种质抗TMV；Cg7900454、6251、金烟6号、革杂基、津引1号等种质中抗TMV；有3个种质抗其它主要病害。有7个种质尼古丁含量较低（0.74%~2%）；津引1号、筑波1号和85-5006等种质经济性状、外观质量和内在品质较好。福泉大鸡尾和窝里黄0782等种质的现蕾期比对照K326早8d；革杂基现蕾期比K326晚5d。这些具有特异性的种质，特别是低尼古丁含量的种质直接推荐给育种者选择利用。而T51、窝里黄0782、6251和福泉大鸡尾经济性状较差，但有一定的抗病性的种质进行种子繁殖并保存，可供今后研究利用

Screening of the High Quality and Disease Resisted Tobacco Germplasm Resources (Continue)

This item was instituted to screen out more tobacco germplasm resistant to main diseases and high leaf quality for breeding to use.11 flue-cured tobacco germplasm resources with good comprehensive characters has been screened out from 125 germplasm resources in the field test in 2004,and then tested their main resistant by inoculated in the field or in greenhouse,and comprehensive evaluation with the control of K326 in the field designed by 3 times and randomized plot in the next year.The result shown that there were the germplasm resources of Huqiandajiwei,Zhubuo No.1 resistance to TMV,and the germplasm resources of Cg7900454,6251,Jinyan No.6,Gejaji,and Jiyin No.1 media resisted to TMV,and 3 resistance to other primary disease.And also screen out 7 germplasm resources with low nicotine within 1% to 2%.Jiyin No.1,Zhubuo No.1,85-5006 have good economic trait and good leaf quality.Huqiandajiwe,Woulihuang 0782 have budded 8 days earlier than K326,and Gejaji budded 5 days later than K326 to be identified.Those special germplasm resources,especially which with lower nicotine,will be recommend to the breeder to be use.And the other germplasm resources were produced more seed to conservation to be use in the future.