Micromorphology and anatomy of leaves of Morus alba L. (Moraceae) cultivars from Poland

Abstract

The article presents results of research on the micromorphology and anatomy of leaves of Morus alba cultivars. Mature leaves from generative shoots were collected in the Cytadela Park in Poznań and from trees planted along streets in different towns in the Wielkopolska region. A light microscope and a scanning electron microscope were used for observations. There were significant differences between the adaxial and abaxial epidermis. The idioblasts are found on the adaxial surface and stomata on the abaxial surface. Stomata can be classified into two types small and large. Several types of trichomes were recognized on the leaves: straight or hooked, unicellular, glandular capitate, spherical to elliptic stalked. Anatomical investigations revealed that leaves of M. alba cultivars were bifacial and the multi-layered mesophyll was diversified into palisade parenchyma and spongy palisade-like parenchyma. The research findings may be used for the identification of M. alba cultivars, while the epicuticular traits may be useful for the identification and classification of fragments of fossil leaves. The article includes descriptions and illustrations of several new quantitative and qualitative characters of the petiole and lamina, which have not been published previously and are described for the first time from Poland.

Dependence of the Distribution and Structure of the White Mulberry (Morus alba) Population in Wrocław on the Intensity of Anthropopressure and Thermal Conditions

“…We would like to stress that mulberry shows extremely high polymorphism. Moreover, it often branches low, thus creating multi-stemmed individuals [ 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 ]. Within the white mulberry population in Wrocław, the most numerous group consisted of trees that did not form part of dense rows (90.6% of all sites).…”

Pharmacognostic specifications and chlorogenic acid content of morus alba linn. Leaves in Thailand

“…The stoma of M. alba leaves was found to be an anomocytic type which had a same size and shape guard cell arrangement as the rest of the epidermis cells, and the nonglandular trichome was round, oval and short tip. The results were correlated with the previous study (KliMKo, 2016). The stomata are one of histological characteristic evaluation for identification of plant species.…”

“…The stomata are one of histological characteristic evaluation for identification of plant species. The epidermal cell has irregularly polygonal cell wall (KliMKo, 2016). Quantitative analysis of microscopic leaf constant number was used to identify between some closely species that cannot be differentiated by general microscopic (Evans, 2009).…”

Pharmacognostic Specifications, RP-HPLC Analysis of Chlorogenic Acid Content and Antioxidant Activity of Morus alba Linn. Leaves in Thailand

“…The findings correlated with the previous study of M. alba leaves cultivars from Poland. 22 Examination of the physicochemical parameters is required for the quality control of the herbal materials. According to the measurement of the water content in the plant material using the azeotropic distillation method, it showed that the water content of dried leaf powders should not be higher than 7.97 ± 0.35%.…”