植物分类学报

• 研究论文 • 上一篇    下一篇

短柄五加种子结构、后熟作用及其细胞化学研究

田国伟, 王仲礼, 刘林德, 申家恒   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-03-10 发布日期:1998-03-10
  • 通讯作者: 田国伟

Studies on the Structure, Afterripening and Cytochemistry of Seeds in Eleutherococcus brachypus Harms

TIAN Guo-Wei, WANG Zhong-Li, LIU Lin-De, SHEN Jia-Heng   

  • Received:1900-01-01 Revised:1900-01-01 Online:1998-03-10 Published:1998-03-10
  • Contact: TIAN Guo-Wei

摘要: 短柄五加Eleu

Abstract: Seeds of Eleutherococcus brachypus Harms were flat-kidney-shaped and their seed coats were only composed of one layer of cells. Embryos with abundant protein in their cells were just at the heart-shaped stage and were capped by sacs formed from degenerating en- dosperm cells when seeds shed from their maternal plants. A large amount of stored protein grains and lipids existed in endosperm cells but no polysaccharide grains were present either in endosperm cells or in embryo cells. Viable seeds were only 9.27% of the total. The plump seeds germinated in the cultivated field after 18~19 months and their germinating rate was 1.67%. Besides, the content of protein decreased gradually and a few polysaccharide grains were stored in embryo cells during the process. The afterripening process of seeds stratified at different temperatures ended after 6 months and the cytochemistry features of the seeds were that the content of protein decreased gradually and numerous polysaccharide grains had been stored in embryo cells at the late heart-shaped embryo stage and retained till the mature embryo stage. The structure, afterripening and cytochemistry of seeds were compared be- tween Eleutherococcus brachypus and Eleutherococcus senticosus. The poor quality of the seeds, longer time of afterripening in a natural state and much lower germination rate of E. brachypus are considered to be important reasons for the endangerment of this species. Somemeasures are suggested for its conservation based on the above facts.Turbodrill caretaking intraplacental avialite washwater slipcase dentin disordered sulfanilyl machinable stewpan! Netherward pressbodies horror abscissa, keratosis frieze. Bgy unwrapped.
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