Abstract:
Euphorbiaceae is the sixth largest families amongst the Anthophyta class of plants, it consists of 340 genera and 9000 species and cosmopolitaly distributed throughout the world. The plants are annual, perennial herbs, shrubs, and trees. Different ecotypes of this genus were collected from different areas of Faisalabad region. Different species of this genus Euphorbia were collected by random collection method for morpho-anatomical studies of root, stem, and leaves. After sample collection, these samples were labelled carefully. Labelling contained scientific names of plants and sites of collection. For sample preservation plastic bags were used, and samples were handled carefully and preserve in plastic bottles for sectioning 70% ethanol and 30% water was used to prepare the solution. Free-hand sectioning technique was used for section cutting of roots and stems. The free-hand sectioning method was used for taking section of root and stem. Results from the transverse section of the stem anatomical structures showed that the stem is circular or oval in outline in all species, except E. heterophylla, where the stem axis is conspicuously notched. The outermost delimiting layer is the epidermis, which is generally uniseriate and composed of barrel-shaped, small, or medium-sized cells. They are thick-walled and covered by a thick cuticle. Trichomes were present on the epidermis in some species such as A. hispida, E. heterophylla and E. hirta where there were glandular, multicellular trichomes and unicellular, non-glandular trichomes present in A. wilkesiana. Anatomical results of the roots revealed much variability among the species. Root characters such as the nature of the epiblema, cortex and vascular tissues are of high taxonomic significance. The secondary root has peridermis, parenchymatic cortex, collateral vascular system surrounded by sclerenchyma. The anatomical features are useful for differentiation among the species.
Page(s):
55-55
DOI:
DOI not available
Published:
Journal: Abstract Book on Second International Conference on Recent Approaches in Plant Sciences (RAPS-23) 4-5 May 2023 , Volume: 0, Issue: 0, Year: 2023
Keywords:
Euphorbia
,
epiblema
,
morphological and anatomical studies
,
cortex