Embryology and embryogenesis of Spiranthes L.C.M. Richard (Orchidaceae): S. spiralis (L.) Cheval and S. aestivalis (Poiret) L.C.M. Richard
作者:
SilvanaDiana Corrias,
Rosalba Villa,
期刊:
Giornale botanico italiano
(Taylor Available online 1983)
卷期:
Volume 117,
issue 5-6
页码: 193-200
ISSN:0017-0070
年代: 1983
DOI:10.1080/11263508309427969
出版商: Taylor & Francis Group
关键词: Embryology;embryogenesis;Spiranthes;Orchidaceae
数据来源: Taylor
摘要:
The various stages of female gametophyte development and embryogenesis inS. spiralisandS. aestivalisare described. In both species the reproductive cycle is sexual. Some peculiarities are present: the female gametophyte is usually 6-7-8-nucleate; after double fertilization a single endospermatic cell is formed; the proembryo appears differentiated and is made up of different cells in the chalazal and micropylar ends; a single basal cell in the proembryo acts as suspensor.
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