心葉煙和三生煙對TMV 的過敏性差異

Difference of Micro-HR to Tobacco Mosaic Virus between Nicotiana Glutinosa and N. tabacum var. Samsun NN

摘要: 以5 個濃度的TMV 溶液分別接種三生煙和心葉煙,，對其產(chǎn)生枯斑的形態(tài),、數(shù)目和大小進行了分析比較。結(jié)果顯示,，兩煙草接種TMV 后產(chǎn)生的枯斑在形態(tài)上沒有差異,；心葉煙產(chǎn)生的全葉平均枯斑數(shù)多于三生煙，且與接種病毒濃度的相關(guān)性顯著（r=0.958,，p<0.05）,；在同一濃度下，三生煙葉片上形成的小枯斑數(shù)多于心葉煙,、形成的大枯斑數(shù)少于心葉煙,，且差異極顯著（p<0.01）。

Abstract: Nicotiana glutinosa and N. tabacum var. Samsun (NN) were inoculated with TMV solution in five different concentrations, respectively. Then the shape, number and size of local necrotic lesions in different treatments were recorded and analyzed. The results showed that the shape of local necrotic lesions formed in two tobacco varieties had no difference, and there was significant difference between average number of local necrotic lesions on the leaf of N. glutinosa and virus concentration (r=0.958,， p<0.05). There were more small local necrotic lesions and less large local necrotic lesions on the leaf of N. Tabacum var. Samsun (NN) than that of N. glutinosa, and the difference was very significant (p<0.01).