茉莉(Jasminumsambac(L.) Aiton)3品种次生木质部的比较解剖学研究  

Study on comparative anatomy of secondary xylem in three cultivars of Jasminum sambac(L.) Aiton

作　　者：郭素枝[1] 刘玉宝[2] 邓传远[3] 

机构地区：[1]福建农林大学生命科学学院 [2]福建农林大学林学院 [3]福建农林大学园林学院,福建福州350002

出　　处：《电子显微学报》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)

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.

关 键 词：茉莉品种 比较木材解剖 抗寒耐旱性 

分 类 号：S685.16[农业科学—观赏园艺] Q336[农业科学—园艺学]