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美味猕猴桃(Actinidia deliciosa No.26)和软枣猕猴桃(A. arguta)杂交,观察了花粉管在花柱内的行为和早期胚胎发生,结果如下: 花粉粒在柱头的乳突细胞表面萌发,在开放型的V 形花柱道内生长,生长速度比对照的缓慢, 到达胚珠珠孔处的时间延迟50 到60 h。当花粉管生长到花柱基部时出现波纹状弯曲;顶端膨大或尖细;部分花粉管的直径发生变化;少数花粉管生长极不规则。花粉管中胼胝质沿管壁不规则沉积, 有的不形成胼胝质塞,或整个管壁被胼胝质所覆盖。约有26.74% 的胚珠受精, 并发育成种子,其中正常种子占68.50% ;败育种子占31.50% ,其中约有11.41% 为空瘪种子;未受精胚珠占61.45% 。正常种子及其胚均较对照的小。胚发育为茄型,胚乳为细胞型,合子保持休眠十几天后开始分裂形成胚,传粉后50d 见到子叶胚
Actinidia deliciosa No.26 and A. arguta hybrids were observed in the style of pollen tube behavior and early embryogenesis, the results are as follows: pollen grains in the stigma mastoid cell surface germination, open Type V-shaped flower Road growth, the growth rate slower than the control, reaching the ovules at the time delay 50 to 60 h. When the pollen tube grows to the base of the style, corrugated bends appear; the tip is enlarged or pointed; the diameter of some pollen tubes changes; and the pollen tubes grow very irregular. Callose pollen tube pollen tube irregular deposition along the wall, and some do not form a callose plug, or the entire wall is covered by callose. About 26.74% of the ovules fertilized and developed into seeds, of which normal seeds accounted for 68.50%; abortion seeds accounted for 31.50%, of which about 11.41% of empty deflated seeds; unfertilized ovules accounted for 61%. 45%. Normal seeds and their embryos are smaller than the control. Embryo development for the eggplant type, endosperm cell type, zygote dormant for ten days to begin to divide after the formation of embryos, 50d after pollen see cotyledonary embryo