Pisum Sativum Wannasiri Wannarat

Дата канвертавання25.04.2016
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IB 423 spring 2006

Anantomy of Pisum Sativum

Wannasiri Wannarat

Pisum Sativum belongs to the family Fabaceae and has known as a garden pea. It is a dicot and its seeds are used as human foods. The garden pea has tendrils at the tip of leaves and stipules at the base of leaves.

In this study, the cross sections and the longitudinal sections of leaves, stems, roots and flower buds were studied by fresh hand section, and investigated under a light microscope. Stomatal complexes were found and its subsidiary cell pattern was anomacytic. The venation of garden pea veins was a reticulated pattern. The leaf was bifacial. The cross section of tendrils showed that they are modified leaves. The stem of garden pea was a square shape. The stele of garden pea stem was arranged in the eustele pattern which had a discrete vascular bundle around the disrupted pith. There were also vascular bundles at the corner of the stem. The vascular bundle was arranged in the form of opened collateral type and the primary xylem pattern is endarch. At the elongation zone, the triarch pattern, which had an exarch development, was found in the primary state of the garden pea root. The root primodium, trichoblasts and branch root were found at the maturation zone. Anther and tetrads of microspores were found in the flower bud. And, the structure which was suspected as a hydrothode was also found in the flower bud.

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