Effects of ultraviolet‐B irradiance on soybean. VI. Influence of phosphorus nutrition on growth and flavonoid content
- 28 April 1985
- journal article
- research article
- Published by Wiley in Physiologia Plantarum
- Vol. 63 (4) , 413-416
- https://doi.org/10.1111/j.1399-3054.1985.tb02319.x
Abstract
Soybeans Glycine max (L.) cv. Essex were hydroponically grown in a greenhouse at 2 levels of ultraviolet‐B (UV‐B) radiation (0 and 2 500 J m−1 day−1 biologically effective UV‐B radiation) and 4 levels of P (6.5, 13, 26 and 52 μM). Plants were grown in each treatment combination to the complete expansion of the 4th trifoliolate leaf. UV‐B radiation and reduced P supply generally decreased plant height, leaf area and total biomass, but increased specific leaf weight and flavonoid content (measured as absorbance of methanolic extracts). Although both UV‐B radiation and low P supply produced deleterious effects on plant biomass, the effects were non‐additive. The combination of UV‐B and the lowest P level (6.5 μM) had no effect on total biomass or leaf area. This was at least partially due to the accumulation of flavonoids and leaf thickening. The results show that the sensitivity of soybean to UV‐B radiation is dependent upon plant P supply. Plants experiencing P deficiency are less sensitive to UV‐B than plants at optimum P levels.Keywords
This publication has 11 references indexed in Scilit:
- Effects of ultraviolet-B radiation on plants during mild water stress. III. Effects on photosynthetic recovery and growth in soybeanPhysiologia Plantarum, 1984
- Effects of Ultraviolet-B Irradiance on SoybeanPlant Physiology, 1984
- Effects of supplemental UV‐B radiation on growth and leaf photosynthetic reactions of soybean (Glycine max)Physiologia Plantarum, 1981
- Effects of Ultraviolet-B Irradiances on SoybeanPlant Physiology, 1980
- Effects of ultraviolet–B irradiances on soybeanPhysiologia Plantarum, 1980
- IMPROVED ANALYTIC CHARACTERIZATION OF ULTRAVIOLET SKYLIGHTPhotochemistry and Photobiology, 1980
- The Effects of Solar UV-B Radiation (280–315 nm) on Higher Plants: Implications of Stratospheric Ozone ReductionPublished by Springer Nature ,1977
- UV dose‐dependent induction of enzymes related to flavonoid biosynthesis in cell suspension cultures of parsleyFEBS Letters, 1975
- The Wavelengths in Sunlight Effective in Producing Skin Cancer: A Theoretical AnalysisProceedings of the National Academy of Sciences, 1974
- SOLAR UV IRRADIATION AND THE GROWTH AND DEVELOPMENT OF HIGHER PLANTSPublished by Elsevier ,1971