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RECORD NUMBER: 2 OF 4

OLS Field Name OLS Field Data
Main Title Effects of Ultraviolet-B Irradiance in Soybean. 6. Influence of Phosphorus Nutrition on Growth and Flavoniid Content.
Author Murali, N. S. ; Teramura, A. H. ;
CORP Author Maryland Univ., College Park. Dept. of Botany.;Corvallis Environmental Research Lab., OR.
Year Published 1985
Report Number EPA/600/J-85/258;
Stock Number PB86-156924
Additional Subjects Radiation effects ; Soybean plants ; Photosynthesis ; Plant growth ; Greenhouses ; Sensitivity ; Ultraviolet radiation ; Biomass ; Phosphorus ; Reprints ; Glycine max
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB86-156924 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 6p
Abstract
Soybeans Glycine max Essex were hydroponically grown in a greenhouse at 2 levels of ultraviolet-B(UV-B) radiation and 4 levels of P. 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 micrometers) 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.