遮荫对大花山牵牛和桂叶老鸦嘴生长及叶片组织结构的影响  

Effects of Shading on Growth and Leaf Microstructure of Thunbergia grandiflora (Rottl. et Willd.) Roxb. and T. laurifolia Lindl.

作　　者：陈国菊[1] 刘厚诚[1] 杨瑞陶[1] 吴筱颖[1] 陈日远[1] 徐义炎 

机构地区：[1]华南农业大学园艺系,广东广州510642 [2]深圳市园林科研所,广东深圳518003

出　　处：《华南农业大学学报》2001年第3期56-59,共4页Journal of South China Agricultural University

摘　　要：遮荫后大花山牵牛 [Thunbergiagrandiflora (Rottl.etWilld .)Roxb .]和桂叶老鸦嘴 (T .laurifoliaLindl.)植株增高、节间增长、叶绿素含量增加、叶绿素a/叶绿素b降低、叶片及栅栏组织和海绵组织厚度降低 ,叶片组织结构紧密度 (CTR)降低、叶片组织结构疏松度 (SR)增加 .The effects of shading on plant growth and leaf microstructure of Thunbergia grandiflora (Rottl. et Willd.) Roxb. and T. Laurifolia Lindl. were studied. The results showed that the height of plant, length of internode ,chlorophyll content and the leaf tissue structure loose ratio ( SR ) increased, but chlorophyll a/chlorophyll b, thickness of leaf, palisade tissue and spongy tissue, the tissue structure tense ratio ( CTR ) decreased.

关 键 词：遮荫 大花山牵牛 桂叶老鸦嘴 叶片组织结构 

分 类 号：S681.6[农业科学—观赏园艺] S681.99[农业科学—园艺学]