Morpho-histological studies in early developmental Leaf and Cotyledon of Adenium obesum (Forssk.) Roem. and Schult

Abstract

The present study reports the morphological and anatomical study of leaf and cotyledons of seedling of Adenium obesum L. It is one of the most important cultivated garden plant of Apocynaceae in India. It is also known as desert rose as it is a xerophytes plant. Adenium obesum is a succulent flowering plant in the dogbane family, Apocynaceae. It is an evergreen or drought deciduous succulent shrub (which can also lose its leaves during cold spells and can grow to 1–3 m (3.3–9.8 ft.) in height. It has pachycaul stems and a stout, swollen basal caudex (obese stem), because of which its look like a bonsai and so economically important horticulture plant. In the present study seeds were collected and shown in the pot. Seedlings were collected with cotyledons at 15th day for morphological and anatomical observation. Morphological characters for cotyledon and leaf such as length, width, apex, angle showed that these characters are correlated with both leaf and cotyledon each other. In the anatomical observation epidermis layers and mucilage layers, palisade tissues, spongy tissues, calcium oxalate crystals are observed. The vascular bundles of the both organs are bicollateral.