Abstract
Salinity is a devastating problem of arid and semi-arid climatic regions with uneven salt accumulation which hinders growth and development of crops. The deleterious effects of salinity mainly depend on level and source of salinity. We hypothesized that types of sodium salt (NaCl and Na2SO4) might cause variable toxicity in maize (Zea mays L.) plants. The objective of the present study was to compare the effect of different types of sodium salt (NaCl and Na2SO4), each at EC 5 and 10 dS m–1 on growth, physiology and nutrient contents of maize plant grown in earthen pots under wire house conditions. Results revealed toxic effects of salt stress on seed germination, root and shoot growth and biomass. Maize physiology in terms of sub-stomatal CO2 index, chlorophyll and relative water contents, photosynthetic and transpiration rate also reduced under salt stress. Among the types of salt and levels of salinity, NaCl applied at the rate of 10 dS m–1 caused the highest reduction in seed germination, growth and physiology due to high accumulation of Na and Cl ions whereas low in K ion in maize plant tissues. Based on the findings, we do conclude that NaCl applied at the rate of 10 dS m–1 has more negative impact on maize growth and nutrient acquisition than Na2SO4 at same level of salinity.
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Claims 6
Claim · model-written summary
Salt stress reduced maize seed germination, root and shoot growth, and biomass.
- Treatment
- salt stresse0
- Outcome
- seed germination, root and shoot growth and biomasse0
- Direction
- toxic effectse0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results revealed toxic effects of salt stress on seed germination, root and shoot growth and biomass.”
t0“maize (Zea mays)”
Claim · model-written summary
Salt stress reduced maize sub-stomatal CO2 index, chlorophyll, and relative water content.
- Treatment
- salt stresse0
- Outcome
- sub-stomatal CO2 index, chlorophyll and relative water contentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize physiology in terms of sub-stomatal CO2 index, chlorophyll and relative water contents, photosynthetic and transpiration rate also reduced under salt stress.”
Claim · model-written summary
Salt stress reduced maize photosynthetic and transpiration rates.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize physiology in terms of sub-stomatal CO2 index, chlorophyll and relative water contents, photosynthetic and transpiration rate also reduced under salt stress.”
Claim · model-written summary
NaCl at 10 dS m–1 caused the largest reduction in maize seed germination, growth, and physiology among the salt treatments.
- Treatment
- NaCl applied at the rate of 10 dS m–1e0
- Outcome
- seed germination, growth and physiologye0
- Direction
- highest reductione0
- Comparator
- types of salt and levels of salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the types of salt and levels of salinity, NaCl applied at the rate of 10 dS m–1 caused the highest reduction in seed germination, growth and physiology due to high accumulation of Na and Cl ions whereas low in K ion in maize plant tissues.”
Claim · model-written summary
NaCl at 10 dS m–1 was associated with high Na and Cl and low K accumulation in maize tissues.
- Treatment
- NaCl applied at the rate of 10 dS m–1e0
- Outcome
- high accumulation of Na and Cl ions whereas low in K ion in maize plant tissuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the types of salt and levels of salinity, NaCl applied at the rate of 10 dS m–1 caused the highest reduction in seed germination, growth and physiology due to high accumulation of Na and Cl ions whereas low in K ion in maize plant tissues.”
Claim · model-written summary
NaCl at 10 dS m–1 had a more negative impact on maize growth and nutrient acquisition than Na2SO4 at the same salinity.
- Treatment
- NaCl applied at the rate of 10 dS m–1e0
- Outcome
- maize growth and nutrient acquisitione0
- Direction
- more negative impacte0
- Comparator
- Na2SO4 at same level of salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl applied at the rate of 10 dS m–1 has more negative impact on maize growth and nutrient acquisition than Na2SO4 at same level of salinity.”
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