杉木地理种源花粉形态的研究

Studies on the Geographical Provenances of Pollen Morphology of Cunninghaia Lanceolata

为研究杉木地理种源对杉木花粉的影响,将引种在一起的11个产区的杉木花粉进行系统的观察。观察表明:杉木花粉粒为球形与近球形,大小(32.9—40)×(29.9—35.5)u。杉木花粉有内外壁,外壁表面具粗或细的两种类型瘤状纹饰,以及分布不均匀的星状微颗粒,其中外壁纹饰为粗瘤状,星状微颗粒小而少,外壁纹饰为细瘤状,星状微颗粒大而多。根据杉木花粉粒的大小,形状,外壁纹饰等特征,将其分为二类型。

In order to know the influnce of geographical provenances of Cunninghamia lan-ceolata on the pollen morphology, pollen grains collected from 11 different provenances which were planted together were systematically observed.It shows that pollen grains are spheroidal or subspheroidal, about the size of (32.9-40) × (29.9-35.5 ) u.The exine are either coarsely or finely verrucate, with the coarse ones containing less and smaller microgranulates, and the fine ones containing more and larger microgr-anulates.The pollen grains are classified into two types by size, shape and exine.