Resin canal

(resin canal, resin resin duct) is a secreted road. The cell is composed of secretory epithelial secretory resin resin. See Yu Songke (Pinaceae), Umbelliferae (Umbelliferae), Araliaceae (Araliaceae) etc..
Resin canal

Resin canal Resin profile

resin Resinduct also called Resincanal"
The leaves contain a resin pipe, called resin pipe.
In pine needles, lateral secretory epithelial cells are surrounded by thick walled cells. In the Pinaceae widely distributed in leaf, stem and root tissues, wood ray etc., which exist in the special resin called ray ray. Abies (Abies) stem injury, can produce a new resin in the vicinity of the wound, and pine (Pinus) produces a new resin in the parenchyma of the left in. Fir Genus and Hemlock spruce Genus (Tsuga) in the roots have a central visible resin. In addition, Spruce Genus (Picea), larch Genus (Larix) in two primary xylem can see a resin, but Taxodiaceae (Taxodiaceae), cypress branch is absent.

Resin canal classification

There are four kinds: exogenous type, type, endogenous, schizogenous.
They don't area are as follows:
Exogenous type: also called the "edge", on the lower crust with the cell edge, for example Masson Akamatsu, etc.;
Endogenous resin: resin duct connected with the endothelial layer, by a bundle sheath; for example, slash pine;
In: located in the middle of mesophyll leaf resin Parenchyma No, and the endothelial layer is not connected with the underlying layers, such as Korean pine So, p..
Schizogenous: also called the "amphitropous type" in the series of skin cells and endothelial layer formed between the lower layer Separate For example, tropical pine.