Study of resistance against crawn gall disease of rose.

1)利用扫描电镜（SEM）观察了农杆菌与抗性和易感玫瑰植株细胞的粘附过程。从农杆菌中扩展出来的纤维状结构参与了与植物体的粘附。在抗性玫瑰中，植物源的颗粒状物质出现在植物细胞表面，颗粒状物质阻碍了农杆菌与植物细胞的粘附，阻碍了农杆菌的运动。从农杆菌中扩展出来的纤维状结构与颗粒状物质相连接，抗性玫瑰中颗粒状物质抑制了农杆菌对植物细胞的粘附。2)从抗性和易感性月季对IAA和玉米素的响应结果来看，月季对冠瘿病的抗性与对植物激素的响应无关。3)Sinapic酸是一种乙酰丁香酮，与“pekcogel”的耐药性无关。

1)It was observed the adhesion process between Agrobacterium and plant cell of resistant and susceptible roses by using SEM. The fiber-shaped structure which expanded from Agrobacterium was involved in the adhesion to the plant body. In resistant roses, the granule-shaped material of the plant origin was observed on the surface of the plant cell, and granule-shaped material obstructed adhesion to the plant cell and un-movement of Agrobacterium. The fiber-shaped structure which expanded from Agrobacterium was connected with the granule-shaped material, much granule-shaped materials in resistant roses inhibited adhesion of Agrobacterium to the plant cell.2) From the results on the response to IAA and Zeatin in resistant and susceptible roses, the resistance of crown gall disease had not relation with a response to the plant hormone.3)Sinapic acid, it was a, kind of acetosyringone, had not relation with the resistance of 'PEKcougel'.