芒苞草(Acanthochlamys bracteata P.C.kao)形态学和胚胎学研究 Ⅲ.双受精,胚乳发育和胚胎发生的研究  

STUDIES ON MORPHOLOGY OF ACANTHOCHLAMYS BRACTEATA III. THE INVESTIGATION ON DOUBLE FERTILIZATION,EMBRYOGENESIS AND ENDOSPERM DEVEROPMENT OF ACANTHOCHLAMYES BRACTEATA

作　　者：李平[1] 高宝莼[2] 

机构地区：[1]四川大学生物系 [2]中国科学院成都生物研究所

出　　处：《四川大学学报（自然科学版）》1993年第2期260-265,共6页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金资助项目

摘　　要：芒苞草(Acanthochlamys bracteata)为珠孔受精,进人胚囊的二个精子分别与卵细胞和中央细胞的次生核进行正常的双受精,其受精作用属有丝分裂前型.受精后的初生胚乳核立即分裂,其发育方式为核型。合子休眠期较长,胚胎发育过程中基细胞有两种分裂方式。也观察了在以上发育过程中蛋白质与淀粉粒的积累与消失。This paper reports investigations on the double fertilization, endosperm development and embryogenesis of A. bracteata. The double fertilization takes place normally. It belongs to premitotic type. The primary endosperm nucleus divides soon after fertilization the first divisions are followed by wall formation The development of endosprm is of nuclear type. The zygote has a rather long period of dormany and the embryo has a slower rate of development than usual. In the processes of double fertilization, embryogenesis and endosperm development, the starch and protein grains show regular changes of the accumulated and dissipated processes.

关 键 词：芒苞草 双受精 形态学 胚胎学 

分 类 号：Q949.4[生物学—植物学]