Histo-anatomical and micromorphological modifications of the stem and leaves in four cultivars of Lavandula angustifolia Mill. supplimented with Hougland nutrient solution
September 12, 2022
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| Article Title: | Histo-anatomical and micromorphological modifications of the stem and leaves in four cultivars of Lavandula angustifolia Mill. supplimented with Hougland nutrient solution |
| Authors: | Ștefan G.-A., Zamfirache M. M., Ivănescu L. C. |
| Affiliation: | „Alexandru Ioan Cuza” University of Iași, Faculty of Biology, Doctoral School of Biology, Iași, Romania |
| Abstract: | This paper presents the histo-anatomical and micromorphological characteristics of the stem and leaves of four cultivars of Lavandula angustifolia Mill. (`Codreanca`, `Provence Blue`, `Vera` and `Sevtopolis`) that were supplemented with Hoagland nutrient solution. This study aimed to assess the structural differences between the cultivars and the experimental variant using color photographs acquired from optical microscopy and scanning electron microscopy (SEM) observations. The stem investigations showed that there is contour variation among the cultivars and the epidermis and bark tend to exfoliate, due to the formation of a suber in the depth of the bark. The cross-sections through the leaf blade highlights a midrib vein that contains a singular vascular bundle of collateral type formed from xylem and phloem, and numerous smaller lateral vascular bundles, that vary among the cultivars. The SEM micrographs on the surface of the leaf blade, showed differential densities and types of the protective and secretory hairs. |
| Keywords: | Lavandula angustifolia, histo-anatomy, optical microscopy, scanning electronic microscopy (SEM), trichome density, Hoagland nutrient solution |
| *Correspondence: | Maria Magdalena Zamfirache, Department of Biology, Alexandru Ioan Cuza University of Iasi, Blvd. Carol I 20A, Iași, RO-700505, Romania, E-mail: magda@uaic.ro |
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