Relationship between Selenium and Sulfur Assimilation and Resultant Interaction on Quality Parameters in Onion
The relationship between selenium (Se) and sulfur (S) uptake and their interaction on the pungency and quercetin contents of onion was investigated in a sand culture trial under polyhouse conditions. The results indicated that application of Se with increasing rates produced an antagonistic effect o...
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Published in: | Communications in Soil Science and Plant Analysis Vol. 43; no. 12; pp. 1625 - 1631 |
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Main Authors: | , , , |
Format: | Journal Article |
Language: | English |
Published: |
Philadelphia, PA
Taylor & Francis Group
15-06-2012
Taylor & Francis Taylor & Francis Ltd |
Subjects: | |
Online Access: | Get full text |
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Summary: | The relationship between selenium (Se) and sulfur (S) uptake and their interaction on the pungency and quercetin contents of onion was investigated in a sand culture trial under polyhouse conditions. The results indicated that application of Se with increasing rates produced an antagonistic effect on S assimilation. An amount of 20 kg Se ha–¹ drastically reduced the S content in onion bulbs. Further, the pungency and quercetin concentration also declined. Foliar application of Se at 1.0 ppm resulted in production of bulbs with lower levels of pungency and quercetin. Though Se is essential from a health point, its application up to 10 kg ha–¹ was sufficient for enriching onions without much effect on the other essential bulb quality parameters. |
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Bibliography: | http://dx.doi.org/10.1080/00103624.2012.681734 |
ISSN: | 1532-2416 0010-3624 1532-2416 1532-4133 |
DOI: | 10.1080/00103624.2012.681734 |