Anatomicl Studies On Morus Alba L.

Mulberry belongs to the deciduous perennial woody plants, belonging to Moraceae mulberry(Morus), ramulus mori is mulberry mulberry twig.Morus plants is deciduous perennial woody plants, the bad ecological environment has a good adaptability, such as cold hardiness and drought resistance.Mulberry not only has an important pharmacological activities in modern medical applications, positive effect to the treatment of various diseases, contains many kinds of active ingredients, such as flavonoids, alkaloids, free sugars, plant sugar, pectin, etc.Mulberry has extensive application in the field of modern medicine, can have the function of the treatment and ease to various diseases, such as blood pressure and cancer.In recent years, the Chinese and foreign researchers began to study the chemical constituents and pharmacological activities of mulberry,and graduallyexpand the application of mulberry.Mulberry in areas such as food, textile and food processing industry also has a good application prospect. In addition, mulberry plants with good ecological benefit and economic benefit, has great value in research and development.Taking Jilin agricultural university of mulberry as the research target, of mulberry leaf, root and stem anatomical structure of the microscopic observation, analysis of structure surface, and further research is unique the relationship between the structure and nature of mulberry.The results show that:1. Mulberry root causes of newborn epidermis, cortex, stele. Star-shaped column, primary xylem 5 prototype, beginning outside style development, primary phloem between the primary xylem, radially arranged radially; parenchyma cells constitute a large central pith.2.Sang years rooting belong diffuse porous wood. Secondary xylem conduit type pitted vessel, a bottom wall inclination irregular, tail length varies. Single hole in the majority, interspersed with few pore complex. Wood rays for single, two and multi-column, by lying upright cells and cell components.There are secondary phloem sieve, companion cells, phloem parenchyma, bast fibers such as composition, molecular sieve rectangular cells, bast fibers zonal distribution, phloem parenchyma cells contain a large number of Druse. Periderm by cork, cork cambium and phelloderm components. Cork cambium cells are mostly rectangular; differentiation outward cork cambium layer produces 2-3 cork layer, into zonal distribution in root tissues; there Druse distributed in periderm cork layer.3.Sang newborn stem from vascular bundles, pith and marrow-ray structure, the column is true in the column, the center of large thin-walled cells constitute marrow, cord belt loop obvious. There are a large number of Druse distributed in phloem parenchyma cells and marrow. More developed cortical intercellular spaces in the cortex in the formation of aerenchyma, cells were round or oval, within the cortex is not obvious.4.Sang perennial stems for ring-porous wood. Secondary xylem by catheter tracheid, wood rays, wood fiber and wood parenchyma cells. Reticulate catheter catheter types, different bottom wall inclination size, tail length varies, the distribution of a single perforated plate, a single hole more irregular polygons, complex pore oval majority. Mulberry wood rays are shaped stem I, rays single ray-based, while the existence of a small number of multi-column rays. Wood ray cells and by lying upright cells. Periderm cork layer distributed a large number of Druse.5. Mulberry leaves are the dorsal-ventral pattern. The upper and lower epidermis of each layer are arranged by compact epidermal cells. Palisade parenchyma cells, mostly long cylindrical, 1-2; spongy parenchyma cell distribution is relatively close, intercellular underdeveloped. Distribution of a large number of druse in the mesophyll tissue cells.The anatomical structure of mulberry leaf, root and stem analysis, the study found that mulberry leaf slice structure thicker, xylem accounted for.Takes root in the early, such as primary stem, toughening parenchyma are crystal and promote distribution, this unique structure gives a strong ability to adapt, with strong drought resistance to cold.