Abstract
Guava is one of the most economically important fruit crops grown in the Northeast region of Brazil. This region is characterized by a high concentration of salts in the water sources used for irrigation, necessitating the development of strategies to minimize the harmful effects of salt stress on production systems. The objective of this study was to analyze the effect of priming guava seeds with H2O2 on seedling production under salt stress. The experiment was conducted in a greenhouse at the Center for Agri-food Science and Technology at the Federal University of Campina Grande, located in Pombal, PB, Brazil. A randomized complete block experimental design was employed, involving a 5 × 3 factorial arrangement represented by five levels of electrical conductivity of irrigation water (ECw: 0.3, 1.1, 1.9, 2.7, and 3.5 dS m-1) and three concentrations of hydrogen peroxide (H2O2: 0, 25, and 50 µM). Four replications were used, with five plants per plot. Salinity in the water starting from 0.3 dS m-1 reduced growth, relative water content, photosynthetic pigments, dry biomass, and Dickson’s quality index, and increased the water saturation deficit in ‘Paluma’ guava seedlings 110 days after sowing. Hydrogen peroxide at a concentration of 25 µM increased the emergence speed index of seedlings, although its application at a concentration of up to 50 µM did not alleviate the adverse impacts of salt stress on ‘Paluma’ guava seedlings under an electrical conductivity of irrigation water of 3.5 dS m-1.
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Claims 6
Claim · model-written summary
Irrigation water salinity reduced guava seedling growth.
- Taxon
- guava
Psidium guajavae0 - Material
- ‘Paluma’e0
- Organ / stage
- seedlingse0
- Treatment
- Salinity in the water starting from 0.3 dS m-1e0
- Outcome
- growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity in the water starting from 0.3 dS m-1 reduced growth, relative water content, photosynthetic pigments, dry biomass, and Dickson’s quality index, and increased the water saturation deficit in ‘Paluma’ guava seedlings 110 days after sowing.”
Claim · model-written summary
Salinity reduced relative water content and photosynthetic pigments.
- Taxon
- guavaPsidium guajavae0
- Treatment
- Salinity in the water starting from 0.3 dS m-1e0
- Outcome
- relative water content, photosynthetic pigmentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity in the water starting from 0.3 dS m-1 reduced growth, relative water content, photosynthetic pigments, dry biomass, and Dickson’s quality index, and increased the water saturation deficit in ‘Paluma’ guava seedlings 110 days after sowing.”
Claim · model-written summary
Salinity reduced dry biomass and Dickson’s quality index.
- Taxon
- guavaPsidium guajavae0
- Treatment
- Salinity in the water starting from 0.3 dS m-1e0
- Outcome
- dry biomass, and Dickson’s quality indexe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity in the water starting from 0.3 dS m-1 reduced growth, relative water content, photosynthetic pigments, dry biomass, and Dickson’s quality index, and increased the water saturation deficit in ‘Paluma’ guava seedlings 110 days after sowing.”
Claim · model-written summary
Salinity increased seedling water saturation deficit.
- Taxon
- guavaPsidium guajavae0
- Treatment
- Salinity in the water starting from 0.3 dS m-1e0
- Outcome
- water saturation deficite0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity in the water starting from 0.3 dS m-1 reduced growth, relative water content, photosynthetic pigments, dry biomass, and Dickson’s quality index, and increased the water saturation deficit in ‘Paluma’ guava seedlings 110 days after sowing.”
Claim · model-written summary
Hydrogen peroxide at 25 µM increased seedling emergence speed index.
- Taxon
- guavaPsidium guajavae1
- Treatment
- Hydrogen peroxide at a concentration of 25 µMe0
- Outcome
- emergence speed indexe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hydrogen peroxide at a concentration of 25 µM increased the emergence speed index of seedlings”
e1“Guava is one of the most economically important fruit crops grown in the Northeast region of Brazil.”
Claim · model-written summary
Hydrogen peroxide up to 50 µM did not alleviate salinity impacts at 3.5 dS m-1.
- Taxon
- guavaPsidium guajavae0
- Treatment
- application at a concentration of up to 50 µMe0
- Outcome
- adverse impacts of salt stresse0
- Direction
- did not alleviatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its application at a concentration of up to 50 µM did not alleviate the adverse impacts of salt stress on ‘Paluma’ guava seedlings under an electrical conductivity of irrigation water of 3.5 dS m-1.”
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salinity · physiology: photosynthesis · Psidium guajava (guava)Results agree
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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.