J Integr Plant Biol. ›› 1985, Vol. 27 ›› Issue (6): -.

• Research Articles •    

On the Fertilization of Gastrodia elata B1.Orchidaceae

Liang Hai-xing   

Abstract: Gastrodia elata B1. is a species of parasitic orchid, its organized structure is much reduced. Although its embryo sac is rather simple (4-celled), the double fertilization proceeds normally. The fusion of sexual nuclei is referred to the premitotic type. The primary endosperm nucleus may divide once or not, and degenerate on the 6th or 7th day after fertilization. The nucleoli of generative and vegetative nuclei in the pollen tube are conspicuous. Generally the sperms form after the contact between the generative cell and vegetative nucleus. The nucleoli of sperms are also clearly distinguished. Daring the fusion of male and female nuclei in fertilization two male nuclei always show the distinct nucleoli.

Key words: Gastrodia etata B1., Fertilization

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2021 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q
备案号:京ICP备16067583号-22