Main Title |
Field Study of the Interaction between Solar Ultraviolet-B Radiation and Drought on Photosynthesis and Growth in Soybean. |
Author |
Sullivan, J. H. ;
Teramura, A. H. ;
|
CORP Author |
Maryland Univ., College Park. Dept. of Botany.;Corvallis Environmental Research Lab., OR. |
Publisher |
c1990 |
Year Published |
1990 |
Report Number |
SCIENTIFIC-8044 ;CONTRIBA-4997; EPA-R-812150-02-0; EPA/600/J-90/490; |
Stock Number |
PB91-196295 |
Additional Subjects |
Ultraviolet rays ;
Photosynthesis ;
Soybeans ;
Droughts ;
Farm crops ;
Field tests ;
Precipitation ;
Plant growth ;
Reprints ;
Plant stress
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-196295 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
8p |
Abstract |
Soybean, Glycine max (L.) Merr. cv Essex, plants were grown in the field in a 2x2 factorial design, under ambient and supplemental levels of ultraviolet-B (UV-B) radiation (supplemental daily dose of 5.1 effective kilojoules per square meter) and were either well-watered or subjected to drought. Soil water potentials were reduced to -2.0 megapascals by the exclusion of natural precipitation in the drought plots and were maintained at approximately -0.5 megapascal by supplemental irrigation in well-watered plots. Plant growth and gas exchange characteristics were affected under both drought and supplemental UV-B radiation. The combined effect of both drought and UV-B radiation on photosynthetic gas exchange was a reduction in apparent quantum efficiency and the rapid appearance of biochemical limitations to photosynthesis concomitant with reduced diffusional limitations. However, the combination of stresses did not result in additive effects on total plant growth or seed yield compared to reductions under either stress independently. |
Supplementary Notes |
Pub. in Plant Physiology, v92 p141-146 1990. Sponsored by Corvallis Environmental Research Lab., OR. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Field Study of the Interaction between Solar Ultraviolet-B Radiation and Drought on Photosynthesis and Growth in Soybean. |
Category Codes |
98D; 57V |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/02 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
120724733 |
Origin |
NTIS |
Type |
CAT |