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Effects of sulphur dioxide fumigation on growth and sulphur accumulation in wheat (Triticum aestivum cv. Wilgoyne (Ciano/Gallo)) under salinity stress

Huang, L. and Murray, F. (1993) Effects of sulphur dioxide fumigation on growth and sulphur accumulation in wheat (Triticum aestivum cv. Wilgoyne (Ciano/Gallo)) under salinity stress. Agriculture, Ecosystems & Environment, 43 (3-4). pp. 285-300.

Link to Published Version: http://dx.doi.org/10.1016/0167-8809(93)90092-4
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Abstract

Responses of wheat (Triticum aestivum cv. Wilgoyne (Ciano/Gallo)) plants to SO2 fumigation under salinity stress were investigated to determine their interaction. Wheat plants were grown in sand culture with three salinity (NaCl) levels: control, 50 and 100 mM, and exposed to mean SO2 concentrations of less than 5 (ambient), 44 and 107 nl 1−1 in fumigation chambers with rain-exclusion tops for 4 h day−1 for up to 110 days.

Exposure to 44 or 107 nl l−1 SO2 initially stimulated plant growth, especially rooth growth. However, the stimulatory effects declined as the exposure duration increased. Grain yield was increased by 107 nl 1−1 SO2. Increasing salinity dramatically suppressed plant growth and grain yield.

Exposure to salinity generally had no interactive effect on dry weight of plants exposed to SO2, though salinity significantly reduced leaf SO2 uptake and sulphur concentrations due to increased stomatal resistance in plants under salinity stress.

Publication Type: Journal Article
Murdoch Affiliation: School of Biological and Environmental Sciences
Publisher: Elsevier BV
Copyright: © 1993 Elsevier B.V.
URI: http://researchrepository.murdoch.edu.au/id/eprint/15280
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