HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Gupta, G. Articles by Mulchi, C. Search for Related Content PubMed Articles by Gupta, G. Articles by Mulchi, C. Agricola Articles by Gupta, G. Articles by Mulchi, C.

Changes in Foliar Concentration of Abscisic Acid in Soybean in Response to Sulfur Dioxide Fumigation

Dep. of Agric. Sci., Univ. of Maryland Eastern Shore, Princess Anne, MD 21853;

Charles Mulchi

Dep. of Agronomy, Univ. of Maryland College Park, College Park, MD 20742.

^* Corresponding author.

ABSTRACT

Soybean [Glycine max (L.) Merr.] cv. Elf plants were exposed to 0.0, 0.05, 0.2, and 0.4 µmol mol^–1 SO₂ in a controlled environment. The amount of abscisic acid (ABA) was measured, using an enzyme linked immunosorbent assay (ELISA), after 1, 2, or 4 h of exposure as well as after 18 h of recovery period. With 0.05 µmol mol^–1 SO₂, the ABA concentrations in soybean leaves were 28 and 141% higher than the control, with 1 and 4 h exposures, respectively; after an 18-h recovery period, the ABA concentrations were still higher (23.6 and 42.8% for the 1 and 4 h exposures, respectively). Abscisic acid concentration increased in soybean leaves both with an increase in the concentration of SO₂ and the time of exposure.

Contribution from the Univ. of Maryland Eastern Shore.

Received for publication March 19, 1990.