Abstract
Summary The aim of the study is to evaluate the effects of polyethylene glycol (PEG)-induced drought stress on the morphological and photosynthetic traits of common bean ( Phaseolus vulgaris L.). This study systematically investigated the morpho-physiologic and biochemical responses of five common bean genotypes under controlled PEG-induced drought conditions (10% and 15% PEG). Mild drought stress (10% PEG) elicited significant adaptive responses, including enhanced root elongation, shoot growth, and biomass accumulation in select genotypes, notably G4 and G5, which also sustained higher chlorophyll content and protein accumulation. Conversely, severe drought (15% PEG) markedly impaired growth parameters and photosynthetic efficiency, reflecting stomatal and non-stomatal limitations. Correlative analyses demonstrated strong interrelationships among photosynthetic pigments, biomass traits, and gas exchange parameters, while principal component analysis elucidated distinct trait clusters underlying drought tolerance mechanisms. Elevated water use efficiency under moderate stress further underscores genotype-specific drought adaptation strategies. These findings highlight the complex interplay between morphological and physiologic traits in conferring drought resilience, offering critical insights for breeding programs aimed at enhancing common bean performance in water-limited environments.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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
Mild PEG drought enhanced root elongation, shoot growth and biomass in selected genotypes.
- Taxon
- common beans
Phaseolus vulgarist0 - Material
- G4 and G5e0
- Treatment
- 10% PEGe0
- Outcome
- root elongation, shoot growth, and biomass accumulatione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mild drought stress (10% PEG) elicited significant adaptive responses, including enhanced root elongation, shoot growth, and biomass accumulation in select genotypes, notably G4 and G5”
t0“common beans”
Claim · model-written summary
G4 and G5 sustained higher chlorophyll content and protein accumulation under mild drought.
- Taxon
- common beansPhaseolus vulgarist0
- Material
- G4 and G5e0
- Treatment
- 10% PEGe0
- Outcome
- chlorophyll content and protein accumulatione0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mild drought stress (10% PEG) elicited significant adaptive responses, including enhanced root elongation, shoot growth, and biomass accumulation in select genotypes, notably G4 and G5, which also sustained higher chlorophyll content and protein accumulation.”
t0“common beans”
Claim · model-written summary
Severe PEG drought impaired growth parameters and photosynthetic efficiency.
- Taxon
- common beansPhaseolus vulgarist0
- Treatment
- 15% PEGe0
- Outcome
- growth parameters and photosynthetic efficiencye0
- Direction
- impairede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“severe drought (15% PEG) markedly impaired growth parameters and photosynthetic efficiency”
t0“common beans”
Claim · model-written summary
Photosynthetic pigments, biomass traits and gas exchange parameters were strongly interrelated.
- Taxon
- common beansPhaseolus vulgarist0
- Outcome
- photosynthetic pigments, biomass traits, and gas exchange parameterse0
- Qualifier
- strong interrelationshipse0
Not reportedOrgan / stageDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Correlative analyses demonstrated strong interrelationships among photosynthetic pigments, biomass traits, and gas exchange parameters”
t0“common beans”
Claim · model-written summary
Principal component analysis identified distinct trait clusters underlying drought tolerance.
- Taxon
- common beansPhaseolus vulgarist0
- Outcome
- distinct trait clusterse0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“principal component analysis elucidated distinct trait clusters underlying drought tolerance mechanisms.”
t0“common beans”
Claim · model-written summary
Water use efficiency was elevated under moderate stress.
- Taxon
- common beansPhaseolus vulgarist0
- Treatment
- moderate stresse0
- Outcome
- water use efficiencye0
- Direction
- Elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated water use efficiency under moderate stress”
t0“common beans”
The same questions in other papers
poly(ethylene glycol) · growth · Phaseolus vulgaris (common bean)Results differ
2 in the opposite direction
- negative
- no effect
poly(ethylene glycol) · physiology: photosynthesis · Phaseolus vulgaris (common bean)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.