【摘要】 在前人工作的基础上，对我国５个龙眼产区１４个具代表性主要品种和野生种的花粉形态进行了观察。根据龙眼品种间花粉的萌发孔结构差异，论证了我国龙眼品种在系统位置上的多样性和连续性，认为龙眼栽培起源于我国的南部和西南部。其次，以我国不同产区龙眼品种花粉外壁纹饰的纹理差别，结合植物地理学和生物进化学分析，提出我国云南为龙眼起源的初生中心，广东、广西和海南为龙眼起源的次生中心。更多还原

【Abstract】 The morphological characteristics of the pollens of 14 typical longan(Dimocarpus longana Lour.) cultivars and wild species in 5 zones in China were observed. The diversity and continuity of the cultivars in the systematic development were discussed according to the differences of apertures among the cultivars. It was considered thatthe cultivation of longan originated from the south and southwestern areas in China.According to the differences of the veins of pollen grains in different zones and the analysisof botanical geography and evolution, it was suggested that the primary origin center ofLongan was Yunnan, and the secondary was Guangdong, Guangxi and Hainan provinces.更多还原