雀稗属花粉形态及其多萌发孔现象

POLLEN MORPHOLOGY AND POLY-APERTURE IN PASPALUM

摘要:

在广东广泛收集禾本科雀稗属的基础上,观察了雀稗属(Paspalum)9个种及其类群的花粉形态。其花粉一般为球型,平均直径在34-50μm之间。花粉表面纹饰一般为疣状突起或皱波状。在四倍体的台湾雀稗(P.formosanum)、双穗雀稗(P.paspaloides)、雀稗(P.thunbergii)、两耳草(P.conjugatum)、圆果雀稗(P.orbiculare)、长叶雀稗(P.longifolium)和一个十倍体的南雀稗(P.commersonii)的一个类群上发现了禾本科罕见的花粉多萌发孔现象。

Abstract:

Pollen morphology of 9 species in genus Paspalum was observed from sample scollected from Guangdong Province. The pollen grains are usually spheriodal with mean diameters ranged from 34 to 50 μm. Pollen ornamentation is commonly verrucate or rugulate. Unusual polyporate pollens were found in tetraploid P.formosanum, P.paspaloides, P.thunbergii, P.conjugatum, P.orbiculare, P.longifolium and a decaploid P.commersonii.