Abstract
Common guava (Psidium guajava L.) is valued for its fruit, which is a source of vitamins, minerals, and natural antioxidants. However, guava production faces salinity challenges globally. Salinity through sodium chloride (NaCl) – 0 mM (control), 10/20 mM (low), 20/40 mM (medium), and 40/80 mM (high) – supplied through a standard Hoagland nutrient solution to 10 genetically diverse guava accessions from Kenya was investigated. Leaf number and dry matter (DM) were significantly reduced at the medium and high salinity levels while root DM remained similar. Root water content increased with rising salinity levels, whereas leaf water content was significantly reduced at the high NaCl level. A decrease in the leaf potassium/sodium (K/Na) and calcium/sodium (Ca/Na) ratios with increasing salinity was observed, possibly due to the high accumulation of Na rather than to the replacement of K and Ca. Leaf phosphorus (P) and sulphur (S) decreased with increasing salinity. Leaf boron (B) and iron (Fe) were significantly reduced only at the high salinity level. Differences among the accessions relative to the accumulation of Na were observed and positively correlated with the DM. Thus, the ability to maintain more DM under salt stress could serve as an indicator for salinity tolerance in Kenyan guava.
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 10
Claim · model-written summary
Medium and high salinity significantly reduced leaf number and dry matter.
- Taxon
- guava
Psidium guajavae0 - Treatment
- medium and high salinity levelse1
- Outcome
- Leaf number and dry matter (DM)e1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“Leaf number and dry matter (DM) were significantly reduced at the medium and high salinity levels”
Claim · model-written summary
Root dry matter remained similar under salinity.
- Taxon
- guavaPsidium guajavae0
- Treatment
- salinity levelse2
- Outcome
- root DMe1
- Direction
- remained similare1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“root DM remained similar”
e2“medium and high salinity levels while root DM remained similar”
Claim · model-written summary
Root water content increased with rising salinity.
- Taxon
- guavaPsidium guajavae0
- Treatment
- salinity levelse1
- Outcome
- Root water contente1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“Root water content increased with rising salinity levels”
Claim · model-written summary
High NaCl significantly reduced leaf water content.
- Taxon
- guavaPsidium guajavae0
- Treatment
- high NaCl levele1
- Outcome
- leaf water contente1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“leaf water content was significantly reduced at the high NaCl level”
Claim · model-written summary
Leaf K/Na and Ca/Na ratios decreased with rising salinity.
- Taxon
- guavaPsidium guajavae0
- Treatment
- increasing salinitye1
- Outcome
- leaf potassium/sodium (K/Na) and calcium/sodium (Ca/Na) ratiose1
- Direction
- decreasee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“A decrease in the leaf potassium/sodium (K/Na) and calcium/sodium (Ca/Na) ratios with increasing salinity was observed”
Claim · model-written summary
Leaf phosphorus and sulphur decreased with rising salinity.
- Taxon
- guavaPsidium guajavae0
- Treatment
- increasing salinitye1
- Outcome
- Leaf phosphorus (P) and sulphur (S)e1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“Leaf phosphorus (P) and sulphur (S) decreased with increasing salinity”
Claim · model-written summary
Leaf boron and iron were significantly reduced only at high salinity.
- Taxon
- guavaPsidium guajavae0
- Treatment
- high salinity levele1
- Outcome
- Leaf boron (B) and iron (Fe)e1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“Leaf boron (B) and iron (Fe) were significantly reduced only at the high salinity level”
Claim · model-written summary
Guava accessions differed in Na accumulation.
- Taxon
- guavaPsidium guajavae0
- Material
- accessionse1
- Outcome
- accumulation of Nae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“Differences among the accessions relative to the accumulation of Na were observed”
Claim · model-written summary
Na accumulation was positively correlated with dry matter among accessions.
- Taxon
- guavaPsidium guajavae0
- Material
- accessionse2
- Compound
- Nae1
- Outcome
- DMe1
- Direction
- positively correlatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common guava (Psidium guajava L.)”
e1“accumulation of Na were observed and positively correlated with the DM”
e2“Differences among the accessions”
Claim · model-written summary
Maintaining more dry matter under salt stress could indicate guava salinity tolerance.
- Taxon
- guavaPsidium guajavae0
- Outcome
- indicator for salinity tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ability to maintain more DM under salt stress could serve as an indicator for salinity tolerance in Kenyan guava”
The same questions in other papers
in vitro · growth · Psidium guajava (guava)Positive and negative results
3 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 papers →salinity · nutrient: content · Psidium guajava (guava)Results agree
2 papers in the same direction as this paper
- no effect
- negative
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.