ZHANG Ying-cai,SU Wei-dong,YANG Jun.The Store Localization Characteristics of Polysaccharide in Zizyphus jujuba Mill cv.[J].Northern Horticulture,2012,36(21):7-11.
灵武长枣多糖积累分布特征研究
- Title:
- The Store Localization Characteristics of Polysaccharide in Zizyphus jujuba Mill cv.
- 文章编号:
- 1001-0009(2012)21-0007-05
- 分类号:
- Q 944.62
- 文献标志码:
- A
- 摘要:
- 采用组织化学方法，研究了不同发育时期灵武长枣的果实、茎和叶及其相关组织中多糖的积累分布特征及其相关性。结果表明：不同发育时期长枣多糖在不同器官中的分布特征不同。在果实发育早期，多糖分布较少，主要分布于靠近外果皮的数层中果皮薄壁细胞，从果实发育的膨果期开始多糖的分布范围和数量逐渐增加，在果实发育的成熟期达到最大，中果皮及其维管束内部和周围等部位的薄壁细胞中分布了大量的多糖物质，中果皮是果实多糖类物质的主要贮藏部位；茎中分布的多糖较少，主要分布在皮层、韧皮薄壁细胞和髓中，且随着果实的发育逐渐减少；叶柄中多糖主要分布在基本组织、韧皮部和木质部的薄壁细胞中，且随着果实的发育有一定程度的增加；叶片中多糖类物质主要分布在叶肉和叶脉的薄壁细胞中，且随着果实的发育有一定程度的减少。随着果实的生长发育，果实中多糖的积累分布逐渐增加，并且与叶中多糖的积累分布具有明显的相关性。
- Abstract:
- The distribution characteristics and relativity of polysaccharide in fruit and stem and leaf of Zizyphus jujuba Mill cv. in different development stages were studied by histochemical methods.The results showed that the distribution characteristics of polysaccharide in different organs in different development stages was diverse.The polysaccharide of the early stages fruit mainly existed in the mesocarp parenchyma near the exocarp.The distribution range and the amount of polysaccharide in fruit gradually increase from the swell fruit to the mature period，the mesocarp and parenchyma in or around bundle existed a large number of polysaccharide，the mesocarp was the chief tissue which accumulated more polysaccharide.The polysaccharide of the stem mainly existed in cortex and phloem parenchymas and pith，the amount of polysaccharide was deficient and it gradually decreases in the course of the fruit development.The polysaccharide of the petiole mainly existed in ground tissue and phloem parenchymas and xylem parenchymas,but the amount of polysaccharide increase to certain degree in the course of the fruit development.The polysaccharide of the blade mainly existed in mesophyll and parenchymas of vein，the amount of polysaccharide decreases to certain degree in the course of the fruit development.The polysaccharide in fruit gradually accumulated in the course of the fruit growth and development，and it was related to the polysaccharide accumulation in the leaf.
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备注/Memo
第一作者简介：章英才（1967-），男，硕士，教授，硕士生导师，现主要从事药用植物结构与有效成分关系等研究工作。E-mail：yingcaizh@163.com.