A New Type of Embryo Sac in Cardiopteris and Its Systematic Implication
心翼果一新的胚囊类型及其系统学意义(英文)
摘要
报道心翼果属 (CardiopterisWall.exRoyle)一种新的胚囊类型 :胚珠无珠被、直生、薄珠心。成熟胚囊中 ,卵器位于合点端 ,反足细胞位于珠孔端。这样的胚囊在所有进行过胚胎学研究的被子植物中系首次发现。合子和胚胎也位于合点端。心翼果属的这一新特征无疑是特异性的 。
基金
中国科学院重点项目:东亚南部界面被子植物关键类群的系统学与地理学研究~~
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