Abstract
ABSTRACT An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%. The NaCl treatment decreased the growth of cv. Naomi by 34% and 21% at 30% and 70% RH, respectively, while there was no decrease in the growth of cv. Daniela at 30% RH and only a slight decrease at 70% RH. Under NaCl treatment, cv Daniela had significantly lower Na+ concentrations in leaves and stems and a higher root-to-shoot ratio than cv. Naomi at both relative humidities. Salt tolerance of cv. Daniela may be related to its high root-to-shoot ratio and its ability to exclude Na+ from the shoot. NaCl-treated plants of cv. Daniela had a lower biomass at 70% than at 30% RH. Conversely, NaCl-treated plants of cv. Naomi had a greater biomass at 70% compared with 30% RH. The ameliorating effects of high RH on NaCl-induced growth reductions in cv. Naomi could be attributed to an increase in leaf area, root growth, photosynthetic rate, and stomatal conductance and a decrease in Cl− concentration in leaves. The overall findings of this study suggest that the growth of salt-sensitive tomato cultivars under saline conditions could be improved by increasing air humidity. Keyword: humiditysalt tolerancetomato ACKNOWLEDGMENTS We are very grateful to Prof. Yehezkel Cohen and Dr. Kamal El-Siddig for their valuable input.
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Claims 11
Claim · model-written summary
80 mM NaCl decreased growth of cv. Naomi by 34% at 30% RH.
- Taxon
- tomato
Solanum lycopersicume0 - Material
- cv. Naomie1
- Treatment
- 80 mM sodium chloride (NaCl)e0
- Outcome
- growthe1
- Direction
- decreasede1
- Value
- 34%e1
- Comparator
- controle0
- Setting
- growth chamberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e1“The NaCl treatment decreased the growth of cv. Naomi by 34% and 21% at 30% and 70% RH, respectively”
Claim · model-written summary
80 mM NaCl decreased growth of cv. Naomi by 21% at 70% RH.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv. Naomie1
- Treatment
- 80 mM sodium chloride (NaCl)e0
- Outcome
- growthe1
- Direction
- decreasede1
- Value
- 21%e1
- Comparator
- controle0
- Setting
- growth chamberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e1“The NaCl treatment decreased the growth of cv. Naomi by 34% and 21% at 30% and 70% RH, respectively”
Claim · model-written summary
80 mM NaCl did not decrease growth of cv. Daniela at 30% RH.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv. Danielae2
- Treatment
- 80 mM sodium chloride (NaCl)e0
- Outcome
- growthe2
- Direction
- no decreasee2
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e2“while there was no decrease in the growth of cv. Daniela at 30% RH and only a slight decrease at 70% RH”
Claim · model-written summary
80 mM NaCl slightly decreased growth of cv. Daniela at 70% RH.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv. Danielae2
- Treatment
- 80 mM sodium chloride (NaCl)e0
- Outcome
- growthe2
- Direction
- slight decreasee2
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e2“while there was no decrease in the growth of cv. Daniela at 30% RH and only a slight decrease at 70% RH”
Claim · model-written summary
Under NaCl, cv. Daniela had significantly lower leaf and stem Na+ concentrations than cv. Naomi at both humidities.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv Danielae3
- Treatment
- NaCl treatmente3
- Outcome
- Na+ concentrations in leaves and stemse3
- Direction
- significantly lowere3
- Comparator
- cv. Naomie3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e3“Under NaCl treatment, cv Daniela had significantly lower Na+ concentrations in leaves and stems and a higher root-to-shoot ratio than cv. Naomi at both relative humidities”
Claim · model-written summary
Under NaCl, cv. Daniela had a higher root-to-shoot ratio than cv. Naomi at both humidities.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv Danielae3
- Treatment
- NaCl treatmente3
- Outcome
- root-to-shoot ratioe3
- Direction
- highere3
- Comparator
- cv. Naomie3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e3“Under NaCl treatment, cv Daniela had significantly lower Na+ concentrations in leaves and stems and a higher root-to-shoot ratio than cv. Naomi at both relative humidities”
Claim · model-written summary
Salt tolerance of cv. Daniela may be related to its high root-to-shoot ratio and exclusion of Na+ from the shoot.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv. Danielae4
- Compound
- Na+e4
- Outcome
- Salt tolerancee4
- Qualifier
- may be related to its high root-to-shoot ratioe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e4“Salt tolerance of cv. Daniela may be related to its high root-to-shoot ratio and its ability to exclude Na+ from the shoot”
Claim · model-written summary
NaCl-treated cv. Daniela had lower biomass at 70% RH than at 30% RH.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv. Danielae5
- Treatment
- NaCl-treated plantse5
- Outcome
- biomasse5
- Direction
- lowere5
- Comparator
- 30% RHe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e5“NaCl-treated plants of cv. Daniela had a lower biomass at 70% than at 30% RH. Conversely, NaCl-treated plants of cv. Naomi had a greater biomass at 70% compared with 30% RH”
Claim · model-written summary
NaCl-treated cv. Naomi had greater biomass at 70% RH than at 30% RH.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv. Naomie5
- Treatment
- NaCl-treated plantse5
- Outcome
- biomasse5
- Direction
- greatere5
- Comparator
- 30% RHe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e5“NaCl-treated plants of cv. Daniela had a lower biomass at 70% than at 30% RH. Conversely, NaCl-treated plants of cv. Naomi had a greater biomass at 70% compared with 30% RH”
Claim · model-written summary
High RH may have ameliorated NaCl-induced growth reductions in cv. Naomi through larger leaf area, root growth, photosynthesis, stomatal conductance and lower leaf Cl−.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- cv. Naomie6
- Treatment
- high RHe6
- Compound
- Cl−e6
- Outcome
- NaCl-induced growth reductionse6
- Qualifier
- an increase in leaf area, root growth, photosynthetic rate, and stomatal conductancee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An environmentally controlled experiment was conducted in growth chambers to investigate the interactive effects of salinity and air humidity on two cultivars of tomato (Lycopersicon esculentum Mill.), Daniela (relatively salt tolerant) and Naomi (relatively salt sensitive). One month after germination, the plants were exposed for 15 days to factorial combinations of two salinity levels, 0 (control) and 80 mM sodium chloride (NaCl), and two relative humidity (RH) levels, 30% and 70%”
e6“The ameliorating effects of high RH on NaCl-induced growth reductions in cv. Naomi could be attributed to an increase in leaf area, root growth, photosynthetic rate, and stomatal conductance and a decrease in Cl− concentration in leaves”
Claim · model-written summary
Increasing air humidity could improve the growth of salt-sensitive tomato cultivars under saline conditions.
- Taxon
- tomatoSolanum lycopersicume7
- Treatment
- increasing air humiditye7
- Outcome
- the growth of salt-sensitive tomato cultivars under saline conditionse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The overall findings of this study suggest that the growth of salt-sensitive tomato cultivars under saline conditions could be improved by increasing air humidity”
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