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园艺学报 ›› 2006, Vol. 33 ›› Issue (4): 825-828.

• 研究报告 • 上一篇    下一篇

荔枝、龙眼叶片表皮结构的研究

王心燕;何惠玲;肖德兴   

  1. (仲恺农业技术学院园艺系, 广东广州 510225)
  • 收稿日期:2005-09-19 修回日期:2006-01-25 出版日期:2006-08-25 发布日期:2006-08-25

Studies on the Leaf Epidermal Structure of Litchich inensis and Dimocarpuslongan

Wang Xinyan;He Huiling;Xiao Dexing   

  1. (Department of Horticulture, Zhongkai Agrotechnical College, Guangzhou, Guangdong 510225, China)
  • Received:2005-09-19 Revised:2006-01-25 Online:2006-08-25 Published:2006-08-25

摘要: 用扫描电镜观察了荔枝、龙眼各3个品种的叶表皮。结果表明, 龙眼叶片上表皮角质层平均厚度2.36μm , 显著大于荔枝(1.93μm) 。荔枝、龙眼叶片下表皮具有大量的乳状突; 乳状突的密度, 荔枝为7 855.1个/mm2 , 龙眼为7 708.8个/mm2 ; 荔枝的乳状突呈近半圆形, 宽9.55μm, 高5.71μm; 龙眼的乳状突为长形, 宽5.94μm, 高10.38μm; 荔枝、龙眼气孔长×宽分别为6.98μm ×3.09μm、7.14μm×2.30μm。荔枝、龙眼表皮结构特征差异明显。

关键词: 荔枝, 龙眼, 表皮, 气孔, 电镜

Abstract: The structure of leaf ep idermis was studied with scanning electronic microscope ( SEM) in 3 cultivars of litchi and longan respectively. The results showed that the cuticle thickness in upper epidermis was 1.93 μm in litchi and 2.36μm in longan. Numerous protuberances could be observed on the lower epidermis, the densities of p rotuberance were 7 855.1 /mm2 in litchi and 7 708.8 /mm2 in longan. The litchips protuberances were dome-shaped with 9.55μm in width and 5.71μm in height. The longanps protuberances were
long, 5.94 μm in width and 10.38 μm in height. The stomata appeared only on lower epidermis, the size of stomata in litchiwas 6.98μm ×3.09μm while 7.14μm ×2.30μm in longan. The characteristic difference of the ep idermis construction was obvious between litchi and longan.

Key words: Litchi chinensis, Dimocarpus longan, Epidermis, Stomata, SEM