Abstract
Two cultivars of guava (Psidium guajava L.) were grown in a porous medium irrigated with dilute nutrient solution containing 0, 25, 50 and 75 mM sodium chloride. The distribution of sodium and chloride between leaves, stems, roots and fruit of the two cultivars is described. Total biomass (and especially fruit fresh weight) was reduced by all salt treatments; however, fruit maturation was accelerated. Symptoms associated with high chloride concentrations developed only on leaves of plants treated with 25 mM sodium chloride. Different symptoms, associated with high sodium concentrations, developed on leaves of plants from the 50 and 75 mM treatments. Transpiration and photosynthesis were reduced in leaves of plants from the 50 and 75 mM treatments. Increased stomatal resistance and a reduction in apparent photochemical efficiency were largely responsible for the reduction in photosynthesis.
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Claims 8
Claim · model-written summary
All salt treatments reduced total biomass.
- Taxon
- guava
Psidium guajavae0 - Treatment
- all salt treatmentse1
- Outcome
- Total biomasse1
- Direction
- reducede1
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two cultivars of guava (Psidium guajava L.) were grown in a porous medium irrigated with dilute nutrient solution containing 0, 25, 50 and 75 mM sodium chloride.”
e1“Total biomass (and especially fruit fresh weight) was reduced by all salt treatments; however, fruit maturation was accelerated.”
Claim · model-written summary
All salt treatments reduced fruit fresh weight.
- Taxon
- guavaPsidium guajavae0
- Treatment
- all salt treatmentse1
- Outcome
- fruit fresh weighte1
- Direction
- reducede1
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two cultivars of guava (Psidium guajava L.) were grown in a porous medium irrigated with dilute nutrient solution containing 0, 25, 50 and 75 mM sodium chloride.”
e1“Total biomass (and especially fruit fresh weight) was reduced by all salt treatments; however, fruit maturation was accelerated.”
Claim · model-written summary
Salt treatments accelerated fruit maturation.
- Taxon
- guavaPsidium guajavae0
- Treatment
- salt treatmentse1
- Outcome
- fruit maturatione1
- Direction
- acceleratede1
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two cultivars of guava (Psidium guajava L.) were grown in a porous medium irrigated with dilute nutrient solution containing 0, 25, 50 and 75 mM sodium chloride.”
e1“Total biomass (and especially fruit fresh weight) was reduced by all salt treatments; however, fruit maturation was accelerated.”
Claim · model-written summary
High-chloride symptoms developed only on leaves at 25 mM sodium chloride.
- Taxon
- guavasPsidium guajavat0
- Organ / stage
- leavese0
- Treatment
- 25 mM sodium chloridee0
- Outcome
- Symptoms associated with high chloride concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Symptoms associated with high chloride concentrations developed only on leaves of plants treated with 25 mM sodium chloride.”
t0“guavas”
Claim · model-written summary
High-sodium symptoms developed on leaves at 50 and 75 mM.
- Taxon
- guavasPsidium guajavat0
- Organ / stage
- leavese0
- Treatment
- 50 and 75 mM treatmentse0
- Outcome
- symptoms, associated with high sodium concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different symptoms, associated with high sodium concentrations, developed on leaves of plants from the 50 and 75 mM treatments.”
t0“guavas”
Claim · model-written summary
The 50 and 75 mM treatments reduced leaf transpiration and photosynthesis.
- Taxon
- guavasPsidium guajavat0
- Organ / stage
- leavese0
- Treatment
- 50 and 75 mM treatmentse0
- Outcome
- Transpiration and photosynthesise0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“guavas”
e0“Transpiration and photosynthesis were reduced in leaves of plants from the 50 and 75 mM treatments.”
Claim · model-written summary
Increased stomatal resistance largely explained reduced photosynthesis.
- Taxon
- guavasPsidium guajavat0
- Outcome
- reduction in photosynthesise0
- Qualifier
- Increased stomatal resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“guavas”
e0“Increased stomatal resistance and a reduction in apparent photochemical efficiency were largely responsible for the reduction in photosynthesis.”
Claim · model-written summary
Reduced photochemical efficiency largely explained reduced photosynthesis.
- Taxon
- guavasPsidium guajavat0
- Outcome
- reduction in photosynthesise0
- Qualifier
- reduction in apparent photochemical efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“guavas”
e0“Increased stomatal resistance and a reduction in apparent photochemical efficiency were largely responsible for the reduction in photosynthesis.”
The same questions in other papers
salinity · growth · Psidium guajava (guava)Results agree
13 papers in the same direction as this paper
- negative
- negative
- negative
10 papers more in this group
See all 14 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.