supported by the Hunan Provincial Natural Science Foundation of China;the National Natural Science Foundation of China;South China Botanical Garden; Chinese Academy of Sciences. We are grateful to Hong-Zhe LI and Jin-Mei LU (Kunming Institute of Botany; Chinese Academy of Sciences; Kunming; China) for helping to collect materials
机构署名：
本校为第一机构
院系归属：
生命科学与环境学院
摘要：
In order to investigate the embryological characteristics of Delavaya toxocarpa Franch. and provide a basis for further understanding the phylogeny within Sapindaceae s.l., we studied the sporogenesis and gametogenesis of D. toxocarpa using the conventional paraffin section method. The results were as follows: anthers are tetrasporangium; tapetum is typically secretory type; cytokinesis in the microsporecyte meiosis is of the simultaneous type and microspore tetrads are tetrahedral; mature pollen contains two cells; the ovary is bilocular with two ovules per locule; placentation is axial; the ...
