Leaf structural dynamics associated with adaptation of two Ebenus cretica ecotypes

Abstract

Morphological and anatomical features of Ebenus cretica leaflet, such as lanceolate shape, reduced size, dense cover with non-glandular hairs, epidermis of small cells, compact mesophyll, amphipleurous presence of palisade parenchyma, thick cuticle, development of numerous mesophyll phenol-storing cells and the amphistomatic type, disclose the xeromorphic character of the plant. In the island of Crete two ecotypes of E. cretica, ecotype A and ecotype C, are greatly extended. In ecotype A leaflets, the above features are more prominent than in ecotype C. This fact accomplished by physiological data favours the suggestion that plants of ecotype A are better adapted to the xerothermic environment of the island of Crete. This may be the reason that ecotype A occupies the major portion of the island and is predominant in the western and central regions. The distinction of ecotypes A and C, by evaluating the strategies these plants used in order to better adapt and the characteristics of their inflorescences may be used as a criterion for the selection of the most appropriate ecotype for application in floriculture and ornamental horticulture.