Home > Browse Issues > Vol.38 No.6
Cytochemical Study on the Anther Development of Hypericum monogynum L.
Wei Dongmei1,2*, Yang Shujuan3, Yang Risheng2
1School of Life Science, Taizhou University, Taizhou 318000, China;
2Zhejiang Kangneng Foodstuffs Co., Ltd.,Tiantai 317200, China;
3School of Life Science, Ningxia University, Yinchuan 750021, China
2Zhejiang Kangneng Foodstuffs Co., Ltd.,Tiantai 317200, China;
3School of Life Science, Ningxia University, Yinchuan 750021, China
Abstract: The metabolisms of polysaccharides and lipids have temporal and spatial characteristic during the anther development. The metabolic characteristics of polysaccharides and lipids differ with plant species. The dynamic distribution of polysaccharides and lipids was observed in the anther developmental processes of Hypericum monogynum L. by histochemical methods. The results showed the distribution of polysaccharides and lipids displayed some characters. At the stage of sporogenous cell， a lot of starch polysaccharides were accumulated in parenchyma cells around vascular bundle， epidermis， endothecium and middle layer cells but no starch in tapetal cells. At the stage of early microspore， tapetal cells began to accumulate starch polysaccharides and gradually increased， and starch polysaccharides appeared in microspores. At stage of late microspore， starch polysaccharides disappeared， and lipids began to accumulate in tapetal cells and microspores. At the stage of bicellular pollen，tapetal cells degenerated in situ， and the lipid content of bicellular pollen significantly increased. Few of normal pollens were filled with starch polysaccharides and lipids as nutritional substances. Most of pollens happened to be abnormal at the stage of microspore. At anthesis， these pollens were empty without starch polysaccharides and lipids resulting in abortion of pollen grains finally. Fertile pollens were filled with starch polysaccharides and lipids.
CN
EN