Abstract
Drought is one of the major limitations to crop production worldwide. This study was conducted to evaluate the response of five almond genotypes and peach×almond hybrid GF to drought stress in vitro, and screening drought tolerance. Explants subjected to polyethylene glycol osmotic stress ( , , and . % WV) on the MS medium. Increasing PEG level in the medium significantly reduced fresh weight and leaf growth indices of the explants. Concentrations of chlorophylls, anthocyanins and carotenoids were significantly reduced under osmotic stress. Drought sensitive genotypes ‘B- ’, ‘Sepid’, ‘Mamaei’ and ‘Ferragnes’ showed stunted growth with high rate of leaf abscission under osmotic stress. Under osmotic stress, leaf water content, cellular membrane stability and pigments concentration were significantly higher in the leaves of tolerant genotypes ‘Supernova’ and GF . The results revealed that carotenoids and anthocyanins may be involved in protecting almonds against drought stress. Based on their responses to the osmotic treatments, almond genotypes were divided into drought tolerant (‘Supernova’ and GF ), semi-sensitive (‘B- ’ and ‘Sepid’) and drought sensitive (‘Mamaei’ and ‘Ferragnes’)
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Claims 6
Claim · model-written summary
Increasing PEG level in the medium significantly reduced fresh weight and leaf growth indices of almond explants.
- Taxon
- almond
Prunus dulcist0 - Organ / stage
- explantse1
- Treatment
- PEG level in the mediume1
- Outcome
- fresh weight and leaf growth indicese1
- Direction
- significantly reducede1
- Setting
- in vitrot1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ALMOND GENOTYPES”
t1“INDUCED IN VITRO”
e1“Increasing PEG level in the medium significantly reduced fresh weight and leaf growth indices of the explants”
Claim · model-written summary
Osmotic stress significantly reduced concentrations of chlorophylls, anthocyanins and carotenoids in almond.
- Taxon
- almondPrunus dulcist0
- Treatment
- osmotic stresse2
- Outcome
- Concentrations of chlorophylls, anthocyanins and carotenoidse2
- Direction
- significantly reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ALMOND GENOTYPES”
e2“Concentrations of chlorophylls, anthocyanins and carotenoids were significantly reduced under osmotic stress”
Claim · model-written summary
Drought sensitive almond genotypes showed stunted growth with a high rate of leaf abscission under osmotic stress.
- Taxon
- almondPrunus dulcist0
- Material
- Drought sensitive genotypese4
- Treatment
- osmotic stresse3
- Outcome
- stunted growth with high rate of leaf abscissione3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ALMOND GENOTYPES”
e4“Drought sensitive genotypes”
e3“showed stunted growth with high rate of leaf abscission under osmotic stress”
Claim · model-written summary
Under osmotic stress, leaf water content, cellular membrane stability and pigment concentration were significantly higher in leaves of tolerant almond genotypes.
- Taxon
- almondPrunus dulcist0
- Material
- tolerant genotypese5
- Organ / stage
- leavese5
- Treatment
- osmotic stresse5
- Outcome
- leaf water content, cellular membrane stability and pigments concentratione5
- Direction
- significantly highere5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“ALMOND GENOTYPES”
e5“Under osmotic stress, leaf water content, cellular membrane stability and pigments concentration were significantly higher in the leaves of tolerant genotypes”
Claim · model-written summary
Carotenoids and anthocyanins may be involved in protecting almonds against drought stress.
- Taxon
- almondsPrunus dulcise6
- Compound
- carotenoids and anthocyaninse6
- Outcome
- protecting almonds against drought stresse6
- Qualifier
- may be involvede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“carotenoids and anthocyanins may be involved in protecting almonds against drought stress”
Claim · model-written summary
Almond genotypes were divided into drought tolerant, semi-sensitive and drought sensitive groups by their osmotic-stress responses.
- Taxon
- almondPrunus dulcise7
- Material
- almond genotypese7
- Outcome
- drought tolerante7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“almond genotypes were divided into drought tolerant”
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