Abstract
ABSTRACT The occurrence of water with high concentrations of salts hinders the expansion of irrigated agriculture in the semi-arid region of the Brazilian Northeast, making it necessary to adopt strategies capable of minimizing the effects of salt stress on plants. In this context, the objective of present study was to evaluate the effects of hydrogen peroxide application on water relations, gas exchange, photosynthetic pigments, and growth of guava cv. Paluma under irrigation with saline waters in the seedling formation stage. A randomized block design was used, in a 5 × 4 factorial scheme, with three replicates, with five levels of electrical conductivity of water - ECw (0.3, 1.3, 2.3, 3.3, and 4.3 dS m-1) and four concentrations of hydrogen peroxide - H2O2 (0, 25, 50, and 75 µM). Irrigation water salinity above 0.3 dS m-1 increased electrolyte leakage in the leaf blade and reduced the relative water content, synthesis of photosynthetic pigments, gas exchange, and growth of seedlings of guava cv. Paluma, at 80 days after sowing. Foliar application of hydrogen peroxide at concentrations of up to 75 µM reduces the relative water content in the leaf blade of guava seedlings and did not mitigate the effects of salt stress on guava plants in the seedling formation stage.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Irrigation salinity above 0.3 dS m-1 increased leaf electrolyte leakage.
- Taxon
- guava
Psidium guajavae0 - Material
- cv. Palumae0
- Treatment
- Irrigation water salinity above 0.3 dS m-1e0
- Outcome
- electrolyte leakage in the leaf bladee0
- Direction
- increasede0
- Qualifier
- at 80 days after sowinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation water salinity above 0.3 dS m-1 increased electrolyte leakage in the leaf blade and reduced the relative water content, synthesis of photosynthetic pigments, gas exchange, and growth of seedlings of guava cv. Paluma, at 80 days after sowing.”
Claim · model-written summary
Salinity reduced leaf relative water content.
- Taxon
- guava
Psidium guajavae0 - Treatment
- Irrigation water salinity above 0.3 dS m-1e0
- Outcome
- relative water contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation water salinity above 0.3 dS m-1 increased electrolyte leakage in the leaf blade and reduced the relative water content, synthesis of photosynthetic pigments, gas exchange, and growth of seedlings of guava cv. Paluma, at 80 days after sowing.”
Claim · model-written summary
Salinity reduced pigment synthesis and gas exchange.
- Taxon
- guava
Psidium guajavae0 - Treatment
- Irrigation water salinity above 0.3 dS m-1e0
- Outcome
- synthesis of photosynthetic pigments, gas exchangee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation water salinity above 0.3 dS m-1 increased electrolyte leakage in the leaf blade and reduced the relative water content, synthesis of photosynthetic pigments, gas exchange, and growth of seedlings of guava cv. Paluma, at 80 days after sowing.”
Claim · model-written summary
Salinity reduced guava seedling growth.
- Taxon
- guava
Psidium guajavae0 - Treatment
- Irrigation water salinity above 0.3 dS m-1e0
- Outcome
- growth of seedlingse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Irrigation water salinity above 0.3 dS m-1 increased electrolyte leakage in the leaf blade and reduced the relative water content, synthesis of photosynthetic pigments, gas exchange, and growth of seedlings of guava cv. Paluma, at 80 days after sowing.”
Claim · model-written summary
Foliar hydrogen peroxide up to 75 µM reduced relative water content.
- Taxon
- guava
Psidium guajavae0 - Treatment
- Foliar application of hydrogen peroxide at concentrations of up to 75 µMe0
- Outcome
- relative water content in the leaf bladee0
- Direction
- reducese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar application of hydrogen peroxide at concentrations of up to 75 µM reduces the relative water content in the leaf blade of guava seedlings”
Claim · model-written summary
Foliar hydrogen peroxide did not mitigate salt stress in guava seedling formation.
- Taxon
- guava
Psidium guajavae0 - Treatment
- Foliar application of hydrogen peroxide at concentrations of up to 75 µMe0
- Outcome
- effects of salt stress on guava plantse0
- Direction
- did not mitigatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Foliar application of hydrogen peroxide at concentrations of up to 75 µM reduces the relative water content in the leaf blade of guava seedlings and did not mitigate the effects of salt stress on guava plants in the seedling formation stage.”
The same questions in other papers
application · organism · Psidium guajava (guava)Positive and negative results
1 in the opposite direction
- positive
application · physiology: water · Psidium guajava (guava)Positive and negative results
2 in the opposite direction
- positive
- positive
irrigation · physiology: water · Psidium guajava (guava)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →irrigation · physiology: photosynthesis · Psidium guajava (guava)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
3 papers more in this group
See all 7 papers →irrigation · growth · Psidium guajava (guava)Positive and negative results
5 papers in the same direction as this paper · 6 in the opposite direction
- negative
- positive
- positive
8 papers more in this group
See all 12 papers →salinity · physiology: water · Psidium guajava (guava)Results agree
1 paper in the same direction as this paper
- negative
salinity · physiology: photosynthesis · Psidium guajava (guava)Results agree
7 papers in the same direction as this paper
- negative
- negative
- negative
4 papers more in this group
See all 8 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.