无萌发孔 meaning in Chinese

atreme
nonaperturate

The results indicate that pollen grains radially symmetrical , apolar , spheroidal , the exine with distinct spines and temuity or perforation , usually the spines very small and dense
7urn ，无极面、无萌发孔。花粉粒表面具三角形或乳突状小刺，小刺密集整齐，密度在（ 2
The evolutionary trend of the germination apertures of the pollen grains in this tribe may be from the absence of germination apertures to the presence of 3 , 4 - colpate , then to 3 - colporate germination aperture
无萌发孔的山莫若属是原始类群，三孔沟的马尿泡和天仙子等属是进化类群。
The colpal membrane is nearly smooth but with granular , spinulose or tuberculate protuberances . the pollen grains show great variations between the genera in the tribe hyoscyameae in terms of the presence or absence of the germination aperture and its type , and the exine ornamentation , and thus can be used as important characters in the consideration of the phylogenetic relationship of this tribe
各属植物的花粉形态在萌发孔的有无、萌发孔的类型和外壁纹饰等方面有较大的差异，可以作为探讨属间分类和系统关系的重要依据c天仙子族植物花粉萌发孔的演化趋势为：无萌发孔一3 、 4沟一3孔沟。