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梨花蜜腺位于子房上部的盘状结构上,属于下位子房上部的花盘蜜腺。蜜腺由分泌表皮和产蜜组织构成。分泌表皮具波纹状角质层,表皮上分布有气孔器。产蜜组织细胞7~10层,其下有5层左右大型薄壁细胞,与来自子房壁的维管束相毗邻。产蜜组织在发育过程中,其细胞中的淀粉粒呈现一定的消长规律。根据其结构及泌蜜前后的多糖物质分析,其原蜜汁来源于子房壁维管束的韧皮部,通过产密组织积聚加工成蜜汁。蜜汁通过气孔和表皮细胞泌出。
Pear nectary is located in the disk on the top of the ovary disk structure, belonging to the upper part of the lower ovary disk flower nectary. Nectaries are formed by the secretory epidermis and honey producing tissue. Secretory epidermis with corrugated cuticle, stomata distributed on the stomatal apparatus. Produce honey tissue cells 7 to 10 layers, under which there are about 5 large parenchyma cells, adjacent to the vascular bundles from the ovary wall. During the development of honey producing tissues, the starch granules in the cells showed a certain rule of growth and decline. According to its structure and secretion of polysaccharides before and after the honey material analysis, the original honey juice from the ovarian duct vascular bundles phloem, processed through the accumulation of dense tissue into honey. Honey is secreted through the stomata and epidermal cells.