Abstract
Salicylic acid is a plant hormone which had enhancing effects on growth and yield of plants under different environmental conditions. It is proposed, salicylic acid could be used as growth regulator for improving plant growth under water stress conditions. The effects of salicylic acid on yield and growth indices on safflower plants was investigated in a split, split plot in complete randomized block design. Water stress in two levels, normal irrigation and cut off irrigation after flowering, as main plot, safflower genotypes in four levels, including Isfehan Local, Gilla, Lesaf and Dincer, as sub plots and priming in five levels, including 0, 700, 1400, 2100 and 2800 µM salicylic acid as sub, sub plot were studied. Results showed that plants in normal conditions had highest leaf area index (LAI), leaf area duration (LAD), net assimilation rate (NAR), seed yield and seed and oil harvest index compared to plants in stress conditions. Water stress leads to rapid decrease in leaf area and decrease of greenness period. Among the genotypes, Dincer and follow it, Lesaf in both irrigated and stress conditions had highest LAI, specific leaf weight, LAD, NAR, seed yield and seed and oil harvest index. Also, Dicer had lowest leaf area ratio (LAR). By contrast, Gilla had highest LAR and lowest seed yield. In irrigated plots, plants which primed with 2800 µM salicylic acid had highest seed yield and growth indices. On the other hand, under stress condition treated plants with 1400 µM salicylic acid had better performance. It is possible in higher priming levels, plants had more leaf area and because of higher transpiration and rapid loss of storage soil water, they had not enough moisture in grain filling period. Therefore, treatments with lower leaf area had better performance.
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Claims 11
Claim · model-written summary
Normal irrigation gave the highest leaf area index, leaf area duration and net assimilation rate compared with stress.
- Taxon
- safflower
Carthamus tinctoriust0 - Treatment
- normal conditionse0
- Outcome
- leaf area index (LAI), leaf area duration (LAD), net assimilation rate (NAR)e0
- Direction
- higheste0
- Comparator
- stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants in normal conditions had highest leaf area index (LAI), leaf area duration (LAD), net assimilation rate (NAR), seed yield and seed and oil harvest index compared to plants in stress conditions”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Normal irrigation gave the highest seed yield and harvest indices compared with stress.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- normal conditionse0
- Outcome
- seed yield and seed and oil harvest indexe0
- Direction
- higheste0
- Comparator
- stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants in normal conditions had highest leaf area index (LAI), leaf area duration (LAD), net assimilation rate (NAR), seed yield and seed and oil harvest index compared to plants in stress conditions”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Water stress rapidly reduced leaf area and the greenness period.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- Water stresse0
- Outcome
- leaf area and decrease of greenness periode0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress leads to rapid decrease in leaf area and decrease of greenness period”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Dincer had the highest LAI, specific leaf weight, LAD and NAR across irrigation conditions, followed by Lesaf.
- Taxon
- safflowerCarthamus tinctoriust0
- Material
- Dincere0
- Outcome
- LAI, specific leaf weight, LAD, NARe0
- Direction
- higheste0
- Qualifier
- both irrigated and stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dincer and follow it, Lesaf in both irrigated and stress conditions had highest LAI, specific leaf weight, LAD, NAR, seed yield and seed and oil harvest index”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Dincer had the highest seed yield and harvest indices across irrigation conditions, followed by Lesaf.
- Taxon
- safflowerCarthamus tinctoriust0
- Material
- Dincere0
- Outcome
- seed yield and seed and oil harvest indexe0
- Direction
- higheste0
- Qualifier
- both irrigated and stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dincer and follow it, Lesaf in both irrigated and stress conditions had highest LAI, specific leaf weight, LAD, NAR, seed yield and seed and oil harvest index”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Dincer had the lowest leaf area ratio.
- Taxon
- safflowerCarthamus tinctoriust0
- Material
- Dicere0
- Outcome
- leaf area ratio (LAR)e0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dicer had lowest leaf area ratio (LAR)”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Gilla had the highest leaf area ratio.
- Taxon
- safflowerCarthamus tinctoriust0
- Material
- Gillae0
- Outcome
- LARe0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gilla had highest LAR and lowest seed yield”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Gilla had the lowest seed yield.
- Taxon
- safflowerCarthamus tinctoriust0
- Material
- Gillae0
- Outcome
- seed yielde0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gilla had highest LAR and lowest seed yield”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Under irrigation, 2800 µM salicylic acid priming gave the highest seed yield and growth indices.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- 2800 µM salicylic acide0
- Outcome
- seed yield and growth indicese0
- Direction
- higheste0
- Setting
- irrigated plotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In irrigated plots, plants which primed with 2800 µM salicylic acid had highest seed yield and growth indices”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Under stress, 1400 µM salicylic acid priming produced better performance.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- 1400 µM salicylic acide0
- Outcome
- better performancee0
- Direction
- bettere0
- Qualifier
- under stress conditione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under stress condition treated plants with 1400 µM salicylic acid had better performance”
t0“Safflower (Carthamus tinctorus L.)”
Claim · model-written summary
Lower leaf area treatments performed better, possibly because greater leaf area depleted stored soil water during grain filling.
- Taxon
- safflowerCarthamus tinctoriust0
- Outcome
- better performancee0
- Qualifier
- higher transpiration and rapid loss of storage soil watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is possible in higher priming levels, plants had more leaf area and because of higher transpiration and rapid loss of storage soil water, they had not enough moisture in grain filling period. Therefore, treatments with lower leaf area had better performance.”
t0“Safflower (Carthamus tinctorus L.)”
The same questions in other papers
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- positive
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7 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
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6 papers more in this group
See all 10 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.