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- 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。
- pollen tube growing 花粉管生长
- 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。
- A serologic reaction retards the growth of the pollen tube. 血清反应阻止花粉管生长。
- And the breakage of RER is another resource of coated vesicles in the growing pollen tube. 另外还观察到内质网的碎裂也是荞麦花粉管中产生被膜小泡的一种机制。
- Another case is that pollen tube of self-pollen grows Slowly. 花粉管生长慢。
- 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。
- During the process of fertilization, pollen lands on the stigma, a tube grows down the style and enters the ovary. 授精的过程中,花粉到达柱头,花柱低下来进入子房。
- Thepollen of hazels can genninat natuIally, but later itS POllen tUbes StOp growing, the malegametOphyte in the tube withers gIadually then in the end the tUbe dies. 榛子的花粉能正常萌发,但之后,花粉管停止生长,花粉管中的雄配子体逐渐萎缩,最后花粉管死亡;
- 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
- 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。
- 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。
- Studies on Pollinating Habit and Pollen Tube Growth Course of Lagerstroemia indica L. 紫薇受粉习性及花粉管生长的研究。
- THE EFFECT OF CYCLOHEXIMroE AND ACTINOMYCIN D ON POLLEN GERMINATION AND POLLEN TUBE GROWTH OF PINUS BUNGEANA AUCC. 放线菌酮和放线菌素D对白皮松花粉萌发和花粉管生长的调控作用
- 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。
- Pollen tube entered one synergid, and released two sperms between egg and central cells. 精子脱掉细胞质鞘后,形成精核与细胞质体;
- 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。