Abstract
Salicylic acid (SA) controls plant growth and induces water deficit tolerance in plants. Summer and fall season experiments were conducted in 2013 to study the effect of 1 mM SA on growth, anatomy, yield, chlorophyll fluorescence, osmoprotectants and water use efficiency (WUE) of squash plants under three levels of irrigation (I100 = 100%, I80 = 80% and I60 = 60% of crop evapotranspiration. Growth, chlorophyll fluorescence, leaf anatomy, leaf photosynthetic pigments, total soluble sugars (TSS), proline, harvest index (HI), yield and WUE were significantly affected by both deficit irrigation (DI) and the combined DI + exogenously applied SA treatment. The combined DI + SA treatment modified the adverse effects of DI and enhanced all aforesaid parameters, while decreased proline concentrations. The combined treatment of I60 or I80 + SA produced plants having yields and WUE as produced with the plants generated under full irrigation conditions without SA treatment. From these results, we conclude that with exogenously applied 1 mM SA, the I60 or I80 strategy studied here could be successfully applied during summer and fall seasons for the production of commercial squash allowing water savings of 20%–40% without any detrimental effect on plant growth or yield.
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Claims 5
Claim · model-written summary
Deficit irrigation and its combination with salicylic acid significantly affected squash growth, fluorescence and leaf anatomy.
- Taxon
- squash plantst0
- Treatment
- deficit irrigation (DI)e0
- Outcome
- Growth, chlorophyll fluorescence, leaf anatomye0
Not reportedComparatorDirection
Verbatim
e0“Growth, chlorophyll fluorescence, leaf anatomy, leaf photosynthetic pigments, total soluble sugars (TSS), proline, harvest index (HI), yield and WUE were significantly affected by both deficit irrigation (DI) and the combined DI + exogenously applied SA treatment.”
t0“squash plants”
Claim · model-written summary
The combined deficit irrigation and salicylic acid treatment improved squash physiological and production measures.
Verbatim
e0“The combined DI + SA treatment modified the adverse effects of DI and enhanced all aforesaid parameters, while decreased proline concentrations.”
e1“leaf photosynthetic pigments, total soluble sugars (TSS), proline, harvest index (HI), yield and WUE”
t0“squash plants”
Claim · model-written summary
The combined deficit irrigation and salicylic acid treatment decreased squash proline concentration.
Verbatim
e0“The combined DI + SA treatment modified the adverse effects of DI and enhanced all aforesaid parameters, while decreased proline concentrations.”
t0“squash plants”
Claim · model-written summary
I60 or I80 plus salicylic acid produced yields and water-use efficiency comparable to full irrigation without salicylic acid.
Verbatim
e0“The combined treatment of I60 or I80 + SA produced plants having yields and WUE as produced with the plants generated under full irrigation conditions without SA treatment.”
t0“squash plants”
Claim · model-written summary
The authors recommend I60 or I80 with 1 mM salicylic acid for commercial squash production with 20%–40% water savings.
Verbatim
e0“with exogenously applied 1 mM SA, the I60 or I80 strategy studied here could be successfully applied during summer and fall seasons for the production of commercial squash allowing water savings of 20%–40% without any detrimental effect on plant growth or yield.”
The same questions in other papers
salicylic acid · physiology: water · Cucurbita (pumpkins)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.