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- supernumerary pollen tubes 超粉花粉管
- A serologic reaction retards the growth of the pollen tube. 血清反应阻止花粉管生长。
- Another case is that pollen tube of self-pollen grows Slowly. 花粉管生长慢。
- Activation of nucellar cells by discharge from the pollen tubes has been claimed. 认为由花粉管的流出物能使珠心细胞活化。
- Pollen tube is defined as the tube through which pollen passes into the ovary. 花粉管定义为花粉进入子房的管道。
- The tube nucleus disintegrates as the pollen tube penetrates the nucellus. 另外的粉管核会在花粉管穿过珠心时发生分裂。
- Generative cell One of the haploid cells in the POLLEN TUBE of seed platns. 生殖细胞：是位于种子植物花粉管中的一个单倍体细胞。
- The coated vesicles in the growing pollen tube are secreted from golgi body. 生长中的花粉管的被膜小泡可由高尔基体分泌形成。
- In second stage, after 2-nucleate embryo sac development, most pollen tubes grow radially around ovules. （2）沿子房径向生长阶段，二核胚囊之后，花粉管在胚珠之间穿梭，以径向生长为主；
- In third stage, at maturing of the embryo sac, pollen tubes grow directionally toward micropyle into embryo sac. （3）朝珠孔定向生长阶段，胚囊成熟时，花粉管朝珠孔定向生长进入胚囊。
- There are numerous pollen tubes which approach the micropyle in the whole process of the fertilization. 注人胚囊的内含物进入两助细胞之一，在卵细胞的一侧形成钩状构造。
- Secondly,if pollen tubes entered into stigma,growth was retarded with callose plug deposition,then they stopped to grow because of inhibition. 即使父本花粉管进入母本柱头，因生长缓慢，沉积胼胝质，在花柱中受抑制而停止生长。
- Secondly, if pollen tubes entered into stigma, growth was retarded with callose plug deposition, then they stopped to grow because of inhibition. 即使父本花粉管进入母本柱头，因生长缓慢，沈积胼胝质，在花柱中受抑制而停止生长。
- Near anthesis, synergids formed filiform apparatus in which abundant calcium precipitates accumulated to prepare for attracting pollen tubes entering. 开花当天助细胞珠孔端的丝状器中聚集了大量的钙颗粒。
- Callose An insoluble polysaccaride that is laid down around the perforations in sieve plates, at wound or infection sites, and by growing pollen tubes. callose胼胝质：在植物筛管的筛域上存在的一种由不溶性的多糖物质积聚而形成的结构。
- A minute opening in the ovule of a seed plant through which the pollen tube usually enters. 珠孔种子植物胚珠上的小开口，通常花粉管由此进入胚珠
- Pollen tubes are the polarized tip-growing system that delivers the male gametes towards the ovaries, which is very essential for sexual reproduction in higher plants. 摘要花粉管的极性顶端生长是将雄配子体运输到子房的过程，在高等植物有性生殖过程中起著重要的作用。
- These results suggest that enhanced endocytosis, together with inhibited secretion, is responsible for the retarded growth of pollen tubes induced by BFA. 我们的结果表明，由BFA诱导的胞吞作用的增强和胞吐作用的抑制导致了花粉管壁建成受阻，并最终引起花粉管生长停滞。
- But whenthe pollen tubes reach the embryo sac, the egg apparatus has degenerated already and therehave been several free nuclei of Lhe endosperm in the central cell. 这种现象是花椒和野花椒在长期进化过程中形成的一种十分特化的适应。
- Cortical microtubules and spiny vesicles appear in the cytoplasm after germination of the pollen tube. 花粉萌发后，细胞质中出现周质微管和被刺小泡，此期细胞器的变化不明显。
