A novel phototropic response to supplementary ultraviolet (UV-B and UV-A) radiation in the siliquas of oilseed rape (Brassica napusL.) grown under natural conditions

Autor: Holmes, M. Geoff, Keiller, Don R.
Zdroj: Photochemical & Photobiological Sciences; November 2002, Vol. 1 Issue: 11 p890-895, 6p
Abstrakt: An outdoor polychromatic response spectrum for the phototropic curvature of the seed pods (siliquas) of oilseed rape (Brassica napusL. cv. Rebel) has been measured. The plants were sown and grown at a location of 52° 12’ N and 0° 07’ E under natural daylight and ambient environmental conditions with supplementary ultraviolet (UV-B and UV-A) radiation. This radiation had central wavelengths of 313, 319, 324, 339, 348, 356 or 377 nm and was supplied daily for 10 hours at an irradiance of 0.13 W m-2. An action maximum for phototropic curvature of the siliquas was observed at 319 and 324 nm.
Databáze: Supplemental Index