Ovule and megagametophyte development in orchids

Authors: Edward C Yeung Sandra K Law

Publish Date: 1997

Volume: , Issue: , Pages: 31-73

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Abstract

Sexual reproduction is essential for the longterm survival of plant species The process of meiosis allows for random assortment of parental genes which enable the offspring to adapt better to environmental changes Pennell 1988 In order to understand reproductive processes in plants information concerning ovule development is indispensable The structure and functions of the seeds cannot be properly understood without studying the ovule in all its aspects Bouman 1984 In most orchid species studied to date the ovules are quite rudimentary prior to pollination Upon successful pollination a massive number of ovules is produced in each ovary This provides a unique opportunity to study events of ovule and embryo sac development in angiosperms Sagawa and Israel 1964

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