摘要
应用光学显微镜和扫描电子显微镜对相似生境条件下生长的茉莉3品种次生木质部的形态结构特征进行了观察,并测量了其数量特征。双瓣茉莉的单孔率比单、多瓣茉莉显著更低,导管聚合度显著更高;双瓣茉莉夏、冬季次生木质部射线薄壁细胞含有更多的淀粉粒,射线比率显著大于单、多瓣茉莉;夏季和冬季材料中,双瓣茉莉大部分导管壁具附物,但单瓣茉莉和多瓣茉莉的附物仅在少量导管壁上出现。讨论了不同品种解剖结构的变动与抗寒耐旱性关系。
The morphological features of the secondary xylem of three cultivars of Jasminum sambac growing in similar habitats were studied in detail by means of optical microscope and scanning electron microscope, and the quantitative features were measured. In comparison with Jasminum sambac ＂Unifoliatum＂ and Jasminum sambac ＂Trifoliatum＂, Jasminum sambac ＂Bifoliatum＂ had lower solitary pore ratio and higher vessel cluster size. ＂Bifoliatum＂ had more strarch grains in ray cells by means of observing the materials collected in summer and winter and higher wood ray proportion than ＂Unifoliatum＂ and ＂Trifoliatum＂. Vestrures are more common on vessel walls of ＂Bifoliatum＂ than those of ＂Unifoliatum＂ and ＂Trifoliatum＂ through observing the materials collected in summer and winter. The relationships between anatomical features of secondary xylem and the adaptability of those cultivars to aridity and low temperature were also discussed.
出处
《电子显微学报》
CAS
CSCD
2008年第5期415-421,共7页
Journal of Chinese Electron Microscopy Society
基金
福建青年科技人才创新项目资助(No.2004J009)
关键词
茉莉品种
比较木材解剖
抗寒耐旱性
cultivars of Jasminum sambac （ L. ） Aiton
comparative wood anatomy
cold and drought resistant
