摘要
通过扫描电镜观察了中国悬钩子属 7组 2 3亚组共 1 0 3个种的花粉形态。本属花粉为圆球形、近球形、长球形和超长球形 ,少数为菱形和六边形 ,具三孔沟 ,大小多为 1 6.0～ 38.0 μm× 1 2 .0～ 30 .0 μm ,外壁纹饰可分为皱波型、条纹型、脑纹型和穿孔网型等类型 ,进而可分为皱波 近光滑状、皱波 条纹状、皱波 穿孔状、条纹状、条纹 穿孔状、条纹 网状、脑纹状、脑纹 穿孔状、穿孔状、穿孔 网状及网状等 1 1个亚型。分析结果认为 ,悬钩子属的花粉形态特征对该属种的区分有一定的参考价值 ,但要合理地阐释其系统发育意义 。
Pollen morphology of 103 species belonging to twenty-three subsections of seven sections of Rubus L. was examined with SEM. The pollen grains are usually 3-colporate, spheroidal, subspheroidal, prolate and perprolate, though occasionally rhombic and hexagonal, 16.0～38.0 μm×12.0～30.0 μm in size. The exine ornamentation can be divided into rugulate, striate, cerebroid and perforate-reticulate types, which include 11 subtypes: rugulate-subpsilate, rugulate-striate,rugulate-perforate, striate, striate-perforate, striate-reticulate, cerebroid, cerebroid-perforate, perforate, perforate-reticulate and reticulate. The pollen morphology is of some significance for a better classification of the genus Rubus, but seems to be of little help for a better understanding of the phylogeny of the genus.
出处
《植物分类学报》
CSCD
北大核心
2001年第3期234-247,T001-T005,共19页
Acta Phytotaxonomica Sinica
基金
江苏省青年科学基金 ( 1 3Q980 4 7)
关键词
悬钩子属
花粉形态
系统学
Rubus L.
Pollen morphology
Systematics
