Abstract
The effect of sodium chloride, silicium and different proportions of ammonium and nitrate on photosynthetic rate, antioxidant enzyme activity, chlorophyll content, proline accumulation, relative water content and protein content of sunflower was studied in hydroponical conditions. Salinity was induced by 200 mM NaCl solution. Also, silicium was applied in three levels; 0, 2 and 4 mM. The plants were nourished by different proportions of nitrate and ammonium for supplying nitrogen (NO 3 :NH 4 ratios 100:0, 75:25, 50:50 and 25:75). The results showed that salinity stress decreased photosynthesis, chlorophyll content and relative water content while it increased antioxidant enzyme activity and soluble protein content. Silicium application increased photosynthesis, enzyme activity, chlorophyll and protein content but it had no significant effect on relative water content. The highest photosynthesis was observed in plants treated with 25:75 ratios. Moreover, this ratio increased enzyme activity; while it had no significant effect on chlorophyll, relative water content and soluble protein.
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Claims 8
Claim · model-written summary
Salinity stress decreased photosynthesis, chlorophyll content and relative water content of sunflower.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- salinity stresse1
- Outcome
- photosynthesis, chlorophyll content and relative water contente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower”
e1“salinity stress decreased photosynthesis, chlorophyll content and relative water content while it increased antioxidant enzyme activity and soluble protein content”
Claim · model-written summary
Salinity stress increased antioxidant enzyme activity and soluble protein content of sunflower.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- salinity stresse1
- Outcome
- antioxidant enzyme activity and soluble protein contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower”
e1“salinity stress decreased photosynthesis, chlorophyll content and relative water content while it increased antioxidant enzyme activity and soluble protein content”
Claim · model-written summary
Silicium application increased photosynthesis, enzyme activity and chlorophyll content in sunflower.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Silicium applicatione1
- Outcome
- photosynthesis, enzyme activity, chlorophylle1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower”
e1“Silicium application increased photosynthesis, enzyme activity, chlorophyll and protein content but it had no significant effect on relative water content”
Claim · model-written summary
Silicium application increased protein content in sunflower.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Silicium applicatione1
- Outcome
- protein contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower”
e1“Silicium application increased photosynthesis, enzyme activity, chlorophyll and protein content but it had no significant effect on relative water content”
Claim · model-written summary
Silicium application had no significant effect on relative water content of sunflower.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Silicium applicatione1
- Outcome
- relative water contente1
- Direction
- no significant effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower”
e1“Silicium application increased photosynthesis, enzyme activity, chlorophyll and protein content but it had no significant effect on relative water content”
Claim · model-written summary
The highest photosynthesis was observed in sunflower plants treated with the 25:75 nitrate:ammonium ratio.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- 25:75 ratiose1
- Outcome
- photosynthesise1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower”
e1“The highest photosynthesis was observed in plants treated with 25:75 ratios”
Claim · model-written summary
The 25:75 nitrate:ammonium ratio increased enzyme activity in sunflower.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- 25:75 ratiose1
- Outcome
- enzyme activitye2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower”
e1“treated with 25:75 ratios”
e2“this ratio increased enzyme activity”
Claim · model-written summary
The 25:75 nitrate:ammonium ratio had no significant effect on chlorophyll, relative water content and soluble protein of sunflower.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- 25:75 ratiose1
- Outcome
- chlorophyll, relative water content and soluble proteine2
- Direction
- no significant effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sunflower”
e1“treated with 25:75 ratios”
e2“it had no significant effect on chlorophyll, relative water content and soluble protein”
The same questions in other papers
silicon atom · physiology: water · Helianthus annuus (common sunflower)Positive and negative results
2 in the opposite direction
- positive
- positive
salinity · physiology: photosynthesis · Helianthus annuus (common sunflower)Results differ
13 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
12 papers more in this group
See all 16 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.