广西蜘蛛抱蛋的大小孢子发生和雌雄配子体发育  

Mega-microsporogenesis and the development of female-male gametophyte in Aspidistra retusa

作　　者：兰可[1] 王任翔[1] 李凤英[1] 李光照[2] 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004 [2]广西壮族自治区中国科学院广西植物研究所,广西桂林541006

出　　处：《广西植物》2008年第6期755-758,860,共5页Guihaia

基　　金：教育部高等学校重点实验室西部地区高级访问学者基金;国家自然科学基金(39660006)~~

摘　　要：对广西蜘蛛抱蛋的花做常规石蜡切片并进行观察后发现:广西蜘蛛抱蛋的花药4室,绒毡层腺质型,发育后期出现双核及多核细胞。小孢子四分体左右对称型,偶见四面体型,胞质分裂连续型。成熟花粉为2细胞。子房3室,中轴胎座。胚珠倒生,双珠被,厚珠心型。珠孔由内珠被形成。胚囊发育为变异的蓼型。After making a routine paraffin section on the flower of Aspidistra retusa, it was found that the anther was 4-sporangiate and glandular tapetum, and became binueleate or multinueleate at the later stage of its development. The microsporocyte underwent meiosis and the cytokinesis was successive which resulted in the formation of isobilateral and occasionally tetrahedral tetrads. The mature pollen grains were 2-celled type. The ovary was triloeular with axile plaeentation and the ovule was anatropous, biteguminous and erassinueellate. The micropyle was formed by the inner integument, The development of embryo sac was mutant Polygonum type.

关 键 词：广西蜘蛛抱蛋 大孢子 小孢子 雌配子体 雄配子体 

分 类 号：Q944.4[生物学—植物学]