Effects of pubescence and waxes on the reflectance of leaves in the ultraviolet and photosynthetic wavebands: a comparison of a range of species

被引:305
作者
Holmes, MG [1 ]
Keiller, DR
机构
[1] Univ Cambridge, Dept Plant Sci, Cambridge CB2 3EA, England
[2] Anglia Polytech Univ, Sch Appl Sci, Div Life Sci, Cambridge, England
关键词
epidermis; glabrous; glaucous; photosynthetically active radiation; UV-A radiation; UV-B radiation;
D O I
10.1046/j.1365-3040.2002.00779.x
中图分类号
Q94 [植物学];
学科分类号
071001 [植物学];
摘要
Total reflectance of ultraviolet and photosynthetically effective wavelengths was measured for a range of different leaf types. Two approaches were employed. Firstly, reflectance of monochromatic wavebands at 330 and 680 run was measured for a total of 45 different species covering a wide range of genera. In the second, specific leaf types that displayed different degrees of reflectance were treated to remove hairs and waxes that contributed to their reflectance. Selected waxy and non-waxy leaves were also studied in more detail over the spectral range 270-500 nm. It was found that both pubescence (presence of hairs) and glaucousness (presence of a thick epicuticular wax layer) a marked effects on total reflectance. Pubescent leaves tended to be more effective in reflecting longer wavelengths than ultraviolet radiation. The extent of this effect depended on hair type. Glaucous leaves demonstrated that surface waxes were very effective reflectors of both UV and longer wavelength radiation.
引用
收藏
页码:85 / 93
页数:9
相关论文
共 64 条
[1]
FURTHER INCREASE IN ULTRAVIOLET-B [J].
AMBACH, W ;
BLUMTHALER, M .
LANCET, 1991, 338 (8763) :393-393
[2]
[Anonymous], EUCALYPTS
[3]
[Anonymous], PLANTS UVB RESPONSES
[4]
Ayres PG, 1995, FUNGI ENV CHANGE, P32
[6]
Barnes J., 1994, Air Pollutants and the Leaf Cuticle, P195, DOI [10.1007/978-3-642-79081-2_16, DOI 10.1007/978-3-642-79081-2_16]
[7]
The influence of UV-B radiation on the physicochemical nature of tobacco (Nicotiana tabacum L) leaf surfaces [J].
Barnes, JD ;
Percy, KE ;
Paul, ND ;
Jones, P ;
McLaughlin, CK ;
Mullineaux, PM ;
Creissen, G ;
Wellburn, AR .
JOURNAL OF EXPERIMENTAL BOTANY, 1996, 47 (294) :99-109
[8]
Classification and terminology of plant epicuticular waxes [J].
Barthlott, W ;
Neinhuis, C ;
Cutler, D ;
Ditsch, F ;
Meusel, I ;
Theisen, I ;
Wilhelmi, H .
BOTANICAL JOURNAL OF THE LINNEAN SOCIETY, 1998, 126 (03) :237-260
[9]
SOME MORPHOLOGICAL AND BIOCHEMICAL CHARACTERISTICS OF C3 AND C4 PLANTS IRRADIATED WITH UV-B [J].
BASIOUNY, FM ;
VAN, TK ;
BIGGS, RH .
PHYSIOLOGIA PLANTARUM, 1978, 42 (01) :29-32
[10]
INDICATION OF INCREASING SOLAR ULTRAVIOLET-B RADIATION FLUX IN ALPINE REGIONS [J].
BLUMTHALER, M ;
AMBACH, W .
SCIENCE, 1990, 248 (4952) :206-208