First Record of Ategmic Ovules in Orchidaceae Offers New Insights Into Mycoheterotrophic Plants.

ABSTRACT: The number of integuments found in angiosperm ovules is variable. In orchids, most species show bitegmic ovules, except for some mycoheterotrophic species that show ovules with only one integument. Analysis of ovules and the development of the seed coat provide important information regarding functional aspects such as dispersal and seed germination. This study aimed to analyze the origin and development of the seed coat of the mycoheterotrophic orchid Pogoniopsis schenckii and to compare this development with that of other photosynthetic species of the family. Flowers and fruits at different stages of development were collected, and the usual methodology for performing anatomical studies, scanning microscopy, and transmission microscopy following established protocols. P. schenc

SUBMITTER: Alves MF 

PROVIDER: S-EPMC6895064 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature