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- Pollen grains triporate, exine reticulate. 花粉粒三孔，外壁网状。
- Were we supposed to get over an exin a slow painful way? 我们一定要经历漫长的痛苦的一段时间才能忘掉以前的男友吗？
- The exine is composed of tectum, columellae, foot layer and endexine. 花粉外壁由顶盖层、柱状层、底层及外壁内层所组成。
- All two pollen grains possess a well-developed pollen wall (exine and intine). 此二种花粉粒皆有发育良好的花粉壁，花粉外壁和内壁并存。
- By contrast, there are some similarity on size and thickness of exine. 与此同时，这7种珠藓科植物的孢子在大小、外壁厚度等方面表现出较大的相似性。
- Pollen morphology and its exine ultrastructure of the Zygophyllaceae in China. 中国蒺藜科花粉形态及其外壁超微结构.
- The result shows that there are some differences among 7 species on the proximal face, the exine ornamention and shape. 观察结果显示：孢子近极薄壁区的有无、形状及外壁纹饰的细微结构等方面，在属间和种间存在一定的差异。
- However, differences exist in pollen size, aperture, exine thickness and ornamentation. 但在花粉大小、萌发孔形状、外壁厚度以及表面纹饰等方面存在差异。
- The ornamentation of exine is reticulate, reticulate-microperforate or microperforate. 外壁纹饰网状，某些种尚具或为细小的穿孔。
- The exine of all species can be distinguished by itstectum, baculum and foot-layer. 透射电镜下观察,5种植物花粉外壁均可分为覆盖层、柱状层和基层。
- An observation of the exine structure and surfacial characteristics of Eriobotrya pollen. 枇杷花粉外壁结构及表面特征的观察.
- Different cultivars showed different exine sculpture and fringes, luminas and verrucate. (1)微型月季花粉具有3个萌发孔，极面观为三裂圆形；
- The exine ornamentation is striate to microreticulate, and without supratectal element. 外壁具条纹至细网纹饰，表面光滑无附属物。
- It consists of an air-filled protuberance on each side of the pollen grain developed by the separation of the exine layers, giving the pollen a characteristic winged appearance. 它是花粉粒外壁向外扩展而形成的囊状结构，在花粉粒两侧呈翅状，其内充满空气。
- The pollen grains are spheroidal or subprolate in shape.The sculptures of the pollen exine are unexceptionally reticulate. 花粉为圆球形或近长球形，外壁表面均具网状纹饰。
- When the pollen grains were continuously rehydrated in vitro, the exine and intine will separate from the protoplasm, respectively. 将成熟花粉水合后，其细胞质膨胀，挤压花粉壁使其外壁与内壁，接续与细胞质分离。
- The differencesin size, shape, exine thickness, exine ornamentation and colpates of pollen grainsreflect the evolution trends. 不同茶树品种的花粉粒其形状、大小、萌发孔,外壁表面纹饰均存在着差异、这些特征都反映了茶树花粉的演化趋势。
- Depositions of wall started at the late stage of tetrad, and the exine was fundamentally completed by late stage of microspore. 小孢子外壁的沉积始于四分体晚期，至小孢子晚期外壁已基本发育完全。
- The exine deposition is initiated during the tetrad stage, and the intine formation begins at vacuolated microspore stage. 小孢子在四分体时期开始沉积花粉外壁，小孢子大液泡化时期开始沉积花粉内壁。
- Except for some differences in exine ornamentation and pollen size, there is no great evolutionary divergence among genera in pollen morphology. 总体来讲，花粉没有大的演化分异，只是表面纹饰和花粉大小有一定的差异。
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海词词典，十七年品牌
