Plain Salt Structure On Three Leguminous Plant Research,

Both the leaf of Lespedeza dahurica (laxm.)Schindl. and the leaf of Sophora flavescens Ait. which live in the alkaline land of Songnen plain, and the leaf of Amorpha fruticosa Linn.which grows in the land for salt enduring species sieving were made into paraffin sections. These sections were investigated through light microscope.The result showed that all the three plants which belong to Leguminosae and live with similar environment stress are not identical with the morphology at all.On the under epidermis and petiole epidermis of Sophora flavescens Ait.is founded salt gland which has a secretory cell and a basal cell for the first time. The secretory has thick cuticle, especially more thick cuticle spreaded on the radial wall. Between the secretory cell and the basal cell the cell wall exists the similar structure of Casparian strip through which much plasmodesma goes.For Amorpha fruticosa Linn., there exists epidermal hair on the upper epidermis, some macro ventilating pit in the spongy tissue, many crystal cells in the phloem of the leaf and around vascular bundles. And there exists salt gland which is similar with the salt gland of Sophora flavescens Ait on the under epidermis. It is clear that the inner tangential wall of the basal cell is tightly related with the outer tangential wall of 4-5transfer cells which have been considered a part of the extent of vascular bundle.There exists a layer of big crystal cells in the spongy tissue of Lespedeza dahurica (laxm.)Schindl. And they are still founded in the cortex of the petiole, between the primary phloem and primary xylem, and a few of them in the pith.