Document Type : Research Paper
Authors
1 PhD student, Department of Biology, Faculty of Biological Sciences, Islamic Azad University, North Tehran Branch, Tehran, Iran
2 Assistant Professor, Department of Biology, Faculty of Biological Sciences, Islamic Azad University, North Tehran Branch, Tehran, Iran
3 Associate Professor, Department of Biology, Faculty of Biological Sciences, Islamic Azad University, North Tehran Branch, Tehran, Iran
Abstract
Introduction: Although all flowering plants share similar stages of development in their vegetative and reproductive organs, there is potential for variation in organ conditions due to gene expression. Understanding flower development stages helps comprehend genetic mechanisms for plant organogenesis and morphogenesis. Polygonum bistorta L. is a medicinal plant from the Polygonaceae family. The aim of this study is to examine the anatomical structure of vegetative meristems and investigate several stages of flower development in this species. Hence, this particular species has been gathered from Hamadan Province. Methods:Carmen Zaji, methyl green, hematoxylin, and eosin stains have been used to examine the histology of the plant. An electron microscope photo of the pollen has also been prepared. The Results and Discussion: The investigation has shown that the vascular system of the root and stem in dicotyledons is similar, with collateral vessels in the stem and alternate and pantropical in the root. The vegetative meristem is prominent and domed, and the pollen is spherical and split (tricoplate). The ovule develops into a slightly protruding fruit with thick, lignin-walled cells containing the embryo, which cotyledons fill the bulk of the seed. Calcium oxalate was not found in the studied organs.
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