延边地区部分梨品种花粉形态观察

Morphology Observation of Pollen of some Pear VarietieS in Yanbian Area

对延边11个栽培梨品种在扫描电镜下进行了形态观察,结果观察到在延边地区采集的延边大香水、延边小香水、明月梨、山梨等4个品种花药中无花粉。其余7个品种花粉粒的共同特征为,超长球形或长球形,萌发孔沟均为3拟孔沟,表面具条纹状纹饰和穿孔。不同点为,从条纹状纹饰走向来看身不知、朝鲜洋梨、尖把梨、早酥梨呈横向排列,延边谢花甜、苹果梨、南果梨呈纵向排列。朝鲜洋梨条纹间距最宽,尖把梨条纹间距最窄,朝鲜洋梨穿孔最多,早酥梨穿孔最少。

The morphology of eleven pear eultivars planted in Yanbian state was observed with the scanning electron microscope（SEM）. The results showed that there was no pollen in Yanbian daxiangshui, Yanbianxiaoxiangshui, Mingyueli, Shanli. The Common traits of other seven cultiv ars were overlength sphere Oprelate spheroid shape. There were 3 - colporate, striped sculptillc and bores on surface. The striped sculptine of Shenbuzhi, Chaoxianyangli,Jianbali, Zaosuli presented side-to-side setup, but that of Yanbianxiehuatian、 Pingguoli,Nanguoli appeared vertical setup. The stripes of,Chaoxiallyangli was the widest, but that of Jianbali was the narrowest. The bores of Chaoxianyangli was the most, but that of Zaosuli was the least.