Rodica Bercu
The article comprises the investigation of some vegetative organs (adventitious root, climbing stem and cladodes) anatomy of a popular plant native of East Europe (Ukraine) and South-eastern Europe (Romania), Asparagus brachyphyllus Turcz. The root possesses a typical monocot’s primary structure with a great number of vascular bundles, each of them possessing one metaxylem vessel, some protoxylem vessels and phloem elements. The aerial shoot stele consists of numerous vascular poorly developed collateral bundles. The mechanical tissue is absent except the sclerenchymatous pericycle surrounding the shoot stele. The cladode is more or less elliptical in shape, a differentiated mesophyll and with a layer of clorenchymatous cells and a poorly developed vascular bundles vein. The poorly developed vascular system (in the adventitious root, shoots and leaf), the few mechanical elements present in the aerial part and some sclerenchymatous cells in the blade are in accordance with the plant pendant condition. In literature the cladode anatomy is less described whereas those of roots and shoots almost lack. The few mechanical elements, present in the aerial shoots and the poor developed vascular system and the developed cortex are in accordance with the plant prostrate condition.
anatomy; adventitious root; cladode; vascular bundles; Asparagus brachyphyllus
Presentation: oral