13个牡丹品种花粉形态及萌发率比较

摘要

By using scanning electron microscopy , we observed the pollen morphology of 13 peony varieties , including the germi-nation of pollen shape , pattern and size, and external organs , and studied the 13 peony pollen germination rate by in vitro culture method.The 13 varieties of peony pollen were more obvious , and the equator plane view was divided into nearly spherical and long ball .Polar view-crack was divided into three round and three crack triangle , the germination organ with three intended hole groove , external wall decoration patterns and diverse , which was divided into small foveolate , foveo-late, reticulate, and foveolate-reticulate.Highest germination rate under the same conditions is 'baihuajiao ' of 677.%, and the worst is 'luoyanghong ' of 19.43%.%采用扫描电子显微镜,比较了13个牡丹品种的花粉形状、大小、外壁纹饰及萌发沟等.采用离体培养法,分析比较了13个品种的花粉萌发率.结果表明:13个牡丹品种的花粉有较明显的多样性,赤道面观有近球形和长球形,极面观有三裂圆形和三裂三角形.花粉均具三拟孔沟,外壁纹饰形态多样,有小穴状、穴状、网状、穴网状.'百花娇'花粉萌发率最高(67.70%),'洛阳红'萌发率最差(19.43%).