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

Plant, Cell and Environment - Tập 25 Số 1 - Trang 85-93 - 2002
M. G. Holmes1, Don Keiller2
1Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK and
2Division of Life Sciences, School of Applied Sciences, Anglia Polytechnic University, East Road, Cambridge, CB1 1PT, UK

Tóm tắt

AbstractTotal 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 nm 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) had 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.

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Tài liệu tham khảo

10.1016/0140-6736(91)90536-X

Ayres P.G., 1995, Fungi and Environmental Change, 32

10.1111/j.1558-5646.1955.tb01509.x

10.1007/978-3-642-79081-2_16

10.1093/jxb/47.1.99

10.1006[amp]sol;bojl.1997.0137

10.1111/j.1399-3054.1978.tb01533.x

10.1126/science.2326634

10.1016[amp]sol;0098-8472(96)00128-1

10.1007/978-1-4899-2406-3_14

10.1111/j.1399-3054.1988.tb06368.x

Caldwell M.M., 1994, Physiology and Determination of Crop Yield, 487

10.1111/j.1399-3054.1983.tb04206.x

10.1016/0169-5347(89)90100-6

10.1111/j.1399-3054.1993.tb01727.x

10.1104/pp.55.2.407

10.1111/j.1469-185X.1999.tb00189.x

10.1016/S1011-1344(00)00096-8

10.1016/S1011-1344(00)00141-X

10.1007/BF00317843

10.1007/978-1-4899-5355-1_6

10.1007/BF02357889

10.1038/315207a0

10.1023[amp]sol;a:1009826803540

10.1126/science.260.5107.523

10.1034/j.1399-3054.1996.980425.x

10.1023[amp]sol;a:1005227730336

Greene O., 1995, Emerging challenges for the Montreal Protocol, Globe, 27, 5

Harris N.R.P., 2000, Third European Stratospheric Experiment on Ozone (THESEO) Report.

10.1038/349300a0

10.1017/CBO9780511752346.004

Holmes M.G., 1998, Role of Solar UV‐B Radiation on Ecosystems, 28

10.1007/BF02860838

10.1016/0098-8472(93)90035-E

10.1034/j.1399-3054.1992.860310.x

10.1023/A:1010620228989

10.1126/science.262.5136.1032

Kolattukudy P.E., 1980, The Biochemistry of Plants, Vol 4, 571

10.1111/j.1365-3040.1997.tb00684.x

10.1034/j.1399-3054.1997.1000414.x

Krupa S.V., 1998, Elevated Ultraviolet (UV)‐B Radiation and Agriculture

10.1034[amp]sol;j.1399-3054.2001.1110409.x

10.1016[amp]sol;s0098-8472(97)00005-1

10.1038/249810a0

10.1007/BF00345193

Nobel P.S., 1983, Biophysical Plant Physiology and Ecology

10.1104[amp]sol;pp.117.1.173

Penfold A.R., 1961, The Eucalypts.

10.1007/978-3-642-79081-2

10.1093/treephys/20.9.629

10.1007/BF00345107

10.2307/1937427

10.1016[amp]sol;s0169-5347(96)10062-8

10.1016/B978-0-12-215840-7.50014-8

10.1016/0031-9422(95)00281-b

10.1038[amp]sol;33385

10.1016/s0031-9422(00)89514-x

10.1007/BF00395975

10.1007/BF00014599

10.1016/S0176-1617(87)80272-9

10.1007/978-3-642-78884-0_34

10.1017/CBO9780511752346.003

10.1029/97GL01177

10.1023[amp]sol;a:1003591204999

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Plant, Cell and Environment

Tập 25 Số 1

85-93

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