Avtor/Urednik		Germ, Mateja; Gaberščik, Alenka
Naslov		The effect of UV-B radiation and nutrient availability on growth and photochemical efficiency of PS II in common duckweed
Tip		članek
Vir		Phyton-Ann Rei Bot A
Vol. in št.		Letnik 39, št. 3 Spec Iss
Leto izdaje		1999
Obseg		str. 187-91
Jezik		eng
Abstrakt		Common duckweed (Lemna minor L.) was grown in the laboratory under artifical ultraviolet-B (W-B) radiation in media with different concentrations of nutrients. Three different levels of UV-B radiation (15 kJm-2,19 kJm-2 and 26 kJm-2 per day) were applied. At the end of the experiment, growth rate, chlorophyll content and photochemical efficiency of photosystem II were determined in UV-B treated and in control plants. The data indicate that the highest level of UV-B radiation significantly influences the growth rate of treated plants. Total chlorophyll content in irradiated plants was also lower, but photochemical efficiency of PS II was not affected. Under medium level of UV-B radiation the effect on growth was observed only when the experimental plants were not nutrient limited.
Deskriptorji		PLANTS ULTRAVIOLET RAYS CHLOROPHYLL BIOMASS CULTURE MEDIA