Abstract
Progressive reduction of water supply was imposed during early period (S1) and late period (S2) interceded by a recovery, with a moderate stress for first case and un intensive stress for second case, at fruiting stage of tomato (Lycopersicon esculentum Mill. cv. Rio Grand). The influence of this reduction on fruit production, shoot growth, water content (WC), relative water content (RWC), leaf area (LA), specific leaf weight (SLW), total soluble solids of fruit (T.S.S.) and maturity percentage of fruit were investigated. Repetition of water stress (S1+S2) was obviously reducing the shoot growth, fresh yield, WC, LA and maturity percentage, whereas that was not achieved in dry weight of fruits (FDW), RWC, SLW and T.S.S. Since, a significant difference was founded between the effects of S2 cycle and when that has been preceded by another one S1+S2 on accumulation of dry matter of fruit. Two successive cycles of water stress were doubled of FDW by two times of that registered in control. These results indicate that, during fruiting stage, the effect of gradually exposure of a moderate water stress period, followed by recovery, thereafter by another gradually exposure of un intensive water stress period, contributed to better accumulation of dry matter in fruit by an osmotic adjusting therefore improving water use efficiency, compared to the effect of only one high intensive of water stress applied during the second period. Repetition cycle of water stress may be useful to develop management systems for a reasonable production of tomato and thus reducing the needs of irrigation water in regions facing deficit of water supplies.
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Claims 6
Claim · model-written summary
Repeated water stress reduced tomato shoot growth, fresh yield, water content, leaf area, and fruit maturity percentage.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Repetition of water stress (S1+S2)e0
- Outcome
- shoot growth, fresh yield, WC, LA and maturity percentagee0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Repetition of water stress (S1+S2) was obviously reducing the shoot growth, fresh yield, WC, LA and maturity percentage”
t0“tomato”
Claim · model-written summary
Repeated stress did not produce the same reduction in fruit dry weight, relative water content, specific leaf weight, or soluble solids.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Repetition of water stress (S1+S2)e0
- Outcome
- dry weight of fruits (FDW), RWC, SLW and T.S.S.e0
- Direction
- not achievede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Repetition of water stress (S1+S2) was obviously reducing the shoot growth, fresh yield, WC, LA and maturity percentage, whereas that was not achieved in dry weight of fruits (FDW), RWC, SLW and T.S.S.”
t0“tomato”
Claim · model-written summary
S2 alone and S1 followed by S2 differed significantly in fruit dry-matter accumulation.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- S1+S2e0
- Outcome
- accumulation of dry matter of fruite0
- Comparator
- S2 cyclee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant difference was founded between the effects of S2 cycle and when that has been preceded by another one S1+S2 on accumulation of dry matter of fruit”
t0“tomato”
Claim · model-written summary
Two successive water-stress cycles doubled fruit dry weight relative to control.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Two successive cycles of water stresse0
- Outcome
- FDWe0
- Direction
- doublede0
- Value
- two timese0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two successive cycles of water stress were doubled of FDW by two times of that registered in control”
t0“tomato”
Claim · model-written summary
The authors infer that a moderate stress, recovery, then intensive stress improves fruit dry matter by osmotic adjustment and improves water-use efficiency relative to a single later stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- water stresse0
- Outcome
- better accumulation of dry matter in fruite0
- Qualifier
- by an osmotic adjustinge0
- Comparator
- only one high intensive of water stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“contributed to better accumulation of dry matter in fruit by an osmotic adjusting therefore improving water use efficiency, compared to the effect of only one high intensive of water stress applied during the second period”
t0“tomato”
Claim · model-written summary
The authors recommend repeated water-stress cycles for tomato production with reduced irrigation demand.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- management systems for a reasonable production of tomato and thus reducing the needs of irrigation watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Repetition cycle of water stress may be useful to develop management systems for a reasonable production of tomato and thus reducing the needs of irrigation water”
The same questions in other papers
drought · physiology: water · Solanum lycopersicum (tomato)Results differ
51 papers in the same direction as this paper · 11 in the opposite direction
- negative
- positive
- positive
59 papers more in this group
See all 63 papers →drought · soil: physics · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- negative
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.