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当前位置: 首页 > 文章 > 菊花和除虫菊毛状体的比较 园艺学报 2010,37 (9) 1463-1470
Position: Home > Articles > Comparative Studies on Trichomes of Florist's Chrysanthemum and Pyrethrum Acta Horticulturae Sinica 2010,37 (9) 1463-1470

菊花和除虫菊毛状体的比较

作  者：
李杰;邢梅;李雅菲;Jongsma Maarten;张蝶;王彩云
单  位：
华中农业大学园艺植物生物学教育部重点实验室;Business
关键词：
菊花;除虫菊;毛状体;显微结构;荧光
摘  要：
利用扫描电镜和荧光显微镜观测了菊花(Chrysanthemum morifolium)和除虫菊(Pyrethrum cinerariifolium)叶片与花序表面毛状体的类型、分布与密度及其在荧光下的颜色差异。结果表明:菊花和除虫菊表面同时存在形态各异的头状腺毛和T–形非腺毛两类毛状体。头状腺毛主要分布在菊花的叶片两面、管状花花冠外表面和舌状花花冠远轴面,子房表面几乎不存在或很少;而除虫菊除舌状花花冠近轴面外,叶片与花序的其它部位均有分布,且以子房部位密度最高。T–形非腺毛在两者叶片、苞片和花梗表面均有分布,管状花和舌状花表面则没有。紫外光下菊花和除虫菊叶片的头状腺毛均呈蓝色,但在除虫菊管状花顶部和舌状花远轴面还观测到一些浅绿色的头状腺毛,管状花子房表面的头状腺毛因发育阶段的不同而呈现由红到蓝的变化。所有T–形非腺毛在紫外光下均呈蓝色,蓝色荧光下呈黄色。讨论了这些差异与抗虫性之间的关系。
译  名：
Comparative Studies on Trichomes of Florist's Chrysanthemum and Pyrethrum
作  者：
LI Jie1,XING Mei1,LI Ya-fei1,JONGSMA Maarten2,ZHANG Die1,and WANG Cai-yun1, (1Key Laboratory of Horticulture Plant Biology,Ministry of Education,Huazhong Agricultural University,Wuhan 430070,China;2Business Unit Bioscience,Plant Research International,Wageningen University and Research Centre, Wageningen,The Netherlands)
关键词：
florist's chrysanthemum;pyrethrum;trichome;microstructure;fluorescence
摘  要：
The trichome type,density and color on the epidermis of leaves and flowers of florist's chrysanthemum and pyrethrum were investigated utilizing Scanning Electron Microscopy(SEM)and fluorescence microscopy.Capitate glandular trichomes and T-shaped non-glandular trichomes were found on both species.The capitate glandular trichomes were distributed on both sides of the leaves,and the corolla of disc florets,but only on the abaxial surface of ray florets of florist's chrysanthemum.In the case of pyrethrum they were also found on both sides of leaf surfaces and disc floret corollas,and in this case on the opposite adaxial surface of ray florets.The highest density of capitate glandular trichomes was detected on the surface of ovaries of pyrethrum.Remarkably they were few or not observed on chrysanthemum ovaries.The T-shaped non-glandular trichomes were distributed on the epidermis of leaves,involucre and stalks of both species,but none on the ray and disc florets.Under UV light capitate glandular trichomes were blue on leaves of both species,but on the disc and ray florets of pyrethrum a few green ones were observed.The fluorescence color of the capitate glandular trichomes on the ovaries changed from red to blue with the development of the pyrethrum flower.By contrast,the T-shaped non-glandular trichomes were yellow under blue fluorescence of both species,and it appeared blue under UV light.The relationships between trichome differences and insect resistance were discussed.

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