水曲柳大孢子发生及雌配子体发育的研究  

STUDIES ON MEGASPOROGENESIS AND THE DEVELOPMENT OF FEMALE GAMETOPHYTE IN FRAXINUS MANDSHURICA

作　　者：王秀华[1] 魏春茹[1] 刘红 

机构地区：[1]东北林业大学,黑龙江哈尔滨园林管理局

出　　处：《植物研究》1995年第4期536-538,共3页Bulletin of Botanical Research

摘　　要：水曲柳（ＦｒａｘｉｎｕｓｍａｎｄｓｈｕｉｃａＲｕｐｒ．）子房为二心皮；二室，中轴胎座，每室内具二个倒生胚珠，薄珠心，单珠被。单个孢原细胞分化于珠心顶端表皮之下，直接发育成为大孢子母细胞，大孢子四分体为直线形，通常为合点端第一大孢子具功能，胆囊发育为蓼型。The ovary is twicarpellm, twilocular with two ovules each loculus. The ovuleis unitegmic, tenuinucellar, and anatropous. The embryo sacoriginates from thesingle-archesporial. Usually the chalazal megaspore is the functional one. Thedevelopment of embryo sac is of the Polygoum type. The polar nuclei fuse beforefertilization, and antipodals are ephemeral.

关 键 词：水曲柳 大孢子发生 雌配子体 发育 

分 类 号：S792.412[农业科学—林木遗传育种]