论文部分内容阅读
①巴旦杏雌蕊形态结构为：湿型柱头，花柱实心，子房１室，基生胎座，横生胚珠，双珠被，厚珠心，有珠孔塞。②巴旦杏存在明显的雌雄蕊异熟现象：花粉授粉后２ｈ左右便可萌发，而雌蕊胚囊在开花时仍处在４核期。观察的材料中，绝大部分胚囊在授粉第３天逐渐进入８核早期，第９天发育为成熟胚囊，胚囊为蓼型。③珠孔授精，花粉管最早在授粉第９天进入珠孔，第１０～１１天进入胚囊完成双受精。胚乳在授粉第１１天后出现，受精卵休眠１～２ｄ于授粉第１２天前后进行第一次分裂，胚胎发生为紫菀型。此外，本研究还对巴旦杏早期胚胎发生中胚珠的多糖和单宁物质动态进行了观察。
① Piedmont apical pistil morphology structure: wet stigma, style solid, ovary 1 room, base of the placenta, lateral ovule, double beads, thick beads, beads plug. ② There are obvious alien symbiotic phenomena in almonds: pollen pollination can germinate about 2h after pollination, while the pistil embryo sac is still in 4 nucleus during flowering. Among the observed materials, most of the embryo sacs gradually entered the early 8 nucleus on the 3rd day of pollination, developed mature embryo sacs on the 9th day, and the embryo sac was of the Polygonum type. ③ Zhu Qun insemination, the pollen tube as early as the first 9 days into the perlite, the first 10 to 11 days into the embryo sac to complete double fertilization. The endosperm appeared after pollination on the 11th day. The fertilized eggs first dormancy 1 ~ 2d after pollination on the 12th day after pollination, and the embryo was purple. In addition, the dynamic changes of polysaccharide and tannin in ovules during early embryogenesis were also observed in this study.