Mini-Review of Knowledge Gaps in Salt Tolerance of Plants Applied to Willows and Poplars

Salt tolerance of agricultural crops has been studied since the 1940, but knowledge regarding salt tolerance of woody crops is still in its initial phase. Salt tolerance of agricultural crops has been expressed as the yield decrease due to a certain salt concentration within the root zone as compare...

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Bibliographic Details
Published in:International journal of phytoremediation 2015-07, Vol.17 (7), p.640-650
Main Authors: Mirck, Jaconette, Zalesny, Ronald S.
Format: Article
Language:English
Subjects:
Approximation
Biodegradation, Environmental
Crops
Crops, Agricultural - physiology
electrical conductivity
intensive forestry
Knowledge
phytoremediation
Plant tolerance
Populus
Populus - physiology
Regression analysis
Salinity
Salix
Salix - physiology
Salt
Salt-Tolerance
Soil - chemistry
stress
Water - chemistry
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Summary:Salt tolerance of agricultural crops has been studied since the 1940, but knowledge regarding salt tolerance of woody crops is still in its initial phase. Salt tolerance of agricultural crops has been expressed as the yield decrease due to a certain salt concentration within the root zone as compared to a non-saline control. The most well-known plant response curve to salinity has been a piece-wise linear regression relating crop yield to root zone salinity. This method used the hypothesis that crops tolerate salt up to a threshold after which their yield decreases approximately linearly. Critique to this method included its lack of sensitivity to dynamic factors such as weather conditions. As a result, other classification indices have been developed, but none is as well accepted as the threshold-slope model. In addition to a mini-review of the key salt tolerance studies, our objective was to classify salt tolerance levels of poplars and willows. Initial classification showed that salt tolerance of these genera ranged from sensitive to moderately tolerant.
ISSN:1522-6514
1549-7879
DOI:10.1080/15226514.2014.950414