Soil flooding affects the survival, growth and metabolism of Aegiphila sellowiana Cham. (Lamiaceae)?
DOI:
https://doi.org/10.5433/1679-0367.2012v33n1p123Keywords:
Flooding tolerance, Hypoxia, RGR, Stomatal conductance, Photosynthesis.Abstract
In order to elucidate aspects of tolerance to hypoxia, Aegiphila sellowiana Cham. (Lamiaceae) plants were submitted to different periods of flooding. The survival, growth, stomatal conductance and photosynthesis were evaluated. There was 33,3% of mortality of flooded plants. Among the 66,7% of survivors, the relative growth rate (RGR) of roots, stems, leaves and whole plant was lower than the RGR of plants cultivated in drained soil. Flooded plants presented diageotrophic root production, increased leaf abscission and low production of new leaves. Flooding caused a reduction in stomatal conductance and photosynthetic rate. It is suggested that A. sellowiana has intolerance to soil flooding.Metrics
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