The pollen morphology of pollinated species and cultivars in apples were studied by SEM. The results showed that pollen configuration of pollinated species and cultivars was approximately similar, and its side view was long oval, and its polar view was triangular or roughly round. All cultivars had 3 colpor-ates that annularly distributed in equal space,and the pollens belonged to N3P4C5 model. The sculptural type of species was vertical stripes with many stripes and punctures in the exine sculptures. It was worth emphasizing that the morphology and distribution of the stripes and punctures were distinctly different a-mong 5 species. Exine scuptures could be used as the basis for identifying species according to ridge characteristics and pollen size, Xinnonghong and Hehong could be the most primitive type, Hongjiangjun and Meiguobahao could be the more primitive type, while Meihong could be the more evolutionary type.%利用扫描电镜研究了苹果专用授粉品种与栽培品种的花粉形态特征.结果表明,专用授粉品种和栽培品种的花粉粒相似,侧面观均为长椭圆形,极面观为三角形或近圆形；具3条拟孔沟,萌发沟以等间距环状分布,属于N3P4C5型花粉；花粉外壁属于纵向条状纹饰,外壁均具条嵴,多数品种嵴洼处散生明显的穿孔,但条嵴及穿孔的形态和分布差异明显,可据此来鉴别品种；花粉外壁纹饰可作为鉴别品种的依据,根据条嵴特征和花粉粒大小,推断信浓红和贺红可能是最原始的类型,红将军和美国八号可能是较原始的类型,而美红则可能是较进化的类型.
展开▼
