黄皮属部分种及栽培品种花粉形态的初步研究

本文应用光学显微镜和扫描电子显微镜对华南地区黄皮属(Clausena Burm.f.)5种(变种)及9个黄皮栽培品种(Clausena lansium (Lour.)Skeels)的花粉形态特征进行了观察分析,发现花粉形态组成、沟孔特征、外壁纹饰特征是黄皮属种级或种级以下各个分类等级内的个体相互区分的有效特征,可以作为种或品种鉴定的依据之一。另外,对花粉形态研究中的一些问题进行了讨论。

A PRELIMINARY STUDY ON POLLEN OF SOME SPECIES AND CULTIVARS OF CLAUSENA

The pollens of 4 species and 1 variety of Clausena Burm. f., and 9 cultivars of wampee ( Clausena lansium (Lour.) Skeels ) have been examined by means of the scanning electron microscope (SEM) and the light microscope (LM) for identification purpose in this paper. It is found that all species, varieties and eultivars in oar study can be distinguished on their own relevant taxon by the characteristics of apertures, ornamentation of exine, and components of pollen shapes. It is seemed that the species, Clausena inolida Z. J. Yu et C. Y. Wong, could not be identified fully with Clausena emarginata Huang on the morphological characteristics of dry materials, but combined with the micromorphological characteristics of pollens, C. inolida has a clear-cut definition with C. emarginata. In addition. some problems in pollen studying, such as the collecting of experimental materials, analysing of the results and the statistics of the size, are discussed.