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 |
Checkout Status |
NTIS |
PB86-156924 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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. |