摘要： 利用电子扫描镜观察了番茄、青椒、茄子的胚珠发育过程。观察结果显示，珠心原基从胎座部分化后，周围组织慢慢将珠心原基包被，继续分化完全包被后即成珠被。珠被进一步发育后即成倒生胚珠。在发育后期番茄的胚珠呈扁圆形，青椒的胚珠为近卵形，而茄子的胚珠为椭圆形。茄子和青椒的胚珠发育始期纵向生长较快，茄子从开花期、青椒从开花后期横向生长比例加大。番茄和茄子的胚珠纵横径的比例大致相同，青椒随着果型的加大胚珠大小随之增加。

关键词: 番茄, 青椒, 茄子, 胚珠发育, 形态学观察

Abstract: In this experiment,scaning electronic microscope is used to observe the development of ovules of tomato,sweet pepper and eggplant.The result shows that nucellar forms on the embryonal foot at first,then integument grows up around it and slowly wraps up the nucellar,which makes an inverted ovule.On the later developing stages,ovules of tomato give a oblate shape and that of sweet pepper a water drop,of eggplant ellipse.The ovules of eggplant and sweet pepper grow first in the length,then eggplant from the blooming period,sweet pepper from the later blooming period,grow more in the breadth.Shape index of ovules between tomato and eggplant shows little difference.Ovules of sweet pepper inflate all the period while the fruit is growing.

Key words: Tomato, Sweet pepper, Eggplant, Ovule, Micromorghology

中图分类号: 

• S641.01