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Polyethylene glycol (PEG)-induced drought causes stress responses in growth and photosynthesis of common beans (Phaseolus vulgaris L.) Cover

Polyethylene glycol (PEG)-induced drought causes stress responses in growth and photosynthesis of common beans (Phaseolus vulgaris L.)

Open Access
|Dec 2025

Figures & Tables

Figure 1.

Plant growth traits (RL, RFW, RDW, ShL, ShFW, ShDW) of common bean affected by PEG treatment and genotypeAbbildung 1. Pflanzenwachstumsmerkmale (RL, RFW, RDW, ShL, ShFW, ShDW) der Gartenbohne in Abhängigkeit der PEG-Behandlung und des Genotyps
Plant growth traits (RL, RFW, RDW, ShL, ShFW, ShDW) of common bean affected by PEG treatment and genotypeAbbildung 1. Pflanzenwachstumsmerkmale (RL, RFW, RDW, ShL, ShFW, ShDW) der Gartenbohne in Abhängigkeit der PEG-Behandlung und des Genotyps

Figure 2.

Photosynthetic pigments and protein concentration of common beans affected by PEG treatmentAbbildung 2. Beeinflussung der photosynthetischen Pigmente und der Proteinkonzentration von Gartenbohnen durch PEG-Behandlung
Photosynthetic pigments and protein concentration of common beans affected by PEG treatmentAbbildung 2. Beeinflussung der photosynthetischen Pigmente und der Proteinkonzentration von Gartenbohnen durch PEG-Behandlung

Figure 3.

Photosynthetic parameters of common beans affected by PEG treatment and genotypeAbbildung 3. Photosyntheseparameter von Gartenbohnen in Abhängigkeit der PEG-Behandlung und des Genotyps
Photosynthetic parameters of common beans affected by PEG treatment and genotypeAbbildung 3. Photosyntheseparameter von Gartenbohnen in Abhängigkeit der PEG-Behandlung und des Genotyps

Figure 4.

Correlation coefficients of morpho-physiologic traits of common bean across drought stress conditions (trait abbreviations are defined in Table 2)Abbildung 4. Korrelationskoeffizienten morphophysiologischer Merkmale der Gartenbohne unter verschiedenen Dürrestressbedingungen (Merkmalsabkürzungen sind in Tabelle 2 definiert)
Correlation coefficients of morpho-physiologic traits of common bean across drought stress conditions (trait abbreviations are defined in Table 2)Abbildung 4. Korrelationskoeffizienten morphophysiologischer Merkmale der Gartenbohne unter verschiedenen Dürrestressbedingungen (Merkmalsabkürzungen sind in Tabelle 2 definiert)

Figure 5.

PCA for morpho-physiologic parameters of common bean across drought stress conditions (trait abbreviations are defined in Table 2)Abbildung 5. PCA für morphophysiologische Parameter der Gartenbohne unter Trockenstressbedingungen (Merkmalsabkürzungen sind in Tabelle 2 definiert)
PCA for morpho-physiologic parameters of common bean across drought stress conditions (trait abbreviations are defined in Table 2)Abbildung 5. PCA für morphophysiologische Parameter der Gartenbohne unter Trockenstressbedingungen (Merkmalsabkürzungen sind in Tabelle 2 definiert)

Common bean genotypes used in this studyTabelle 1_ In dieser Studie verwendete Genotypen der Gartenbohne

Common BeanLocationRegionCoordinates
G1LikovcSkenderaj42.6639°N 20.7535°E
G2ArllatDrenas42.5475°N 20.7980°E
G3DobroshecDrenas42.5463°N 20.7882°E
G4TupecPrizren42.2031°N 20.6850°E
G5LandovicaPrizren42.2593°N 20.6811°E

Overall means for morpho-physiologic traits of common bean affected by PEG treatmentsTabelle 3_ Gesamtmittelwerte für morphophysiologische Merkmale der Gartenbohne, beeinflusst durch PEG-Behandlungen

TraitsAbbreviationUnitControl10% PEG15% PEG
Root lengthRLcm9.36b10.46a7.20c
Shoot lengthShLcm54.87b57.6a44.87c
Root fresh weightRFWg0.61a0.58b0.38c
Shoot fresh weightShFWg3.69b4.24a3.26c
Root dry weightRDWg0.11b0.14a0.07c
Shoot dry weightShDWg0.53b0.58a0.37c
Intercellular CO2 concentrationCiμmol mol−1 H2O282.50a262.26b256.90c
Stomatal conductancegsmol m−2 s−1122.70a49.79c54.40b
Vapor pressure deficitVPDkPa0.96c0.95b0.98a
Photosynthetic CO2 assimilationAμmol m−2 s−15.02a3.57b2.79c
Transpiration rateEmmol H2O m−2 s−11.18a0.48c0.54b
Water use efficiencyWUEμmol CO2/mmol H2O6.11c7.76a7.71b
Chlorophyll aChl amg g−1 FW1.42a1.30b0.90c
Chlorophyll bChl bmg g−1 FW0.66a0.57b0.41c
CarotenoidsCarotmg g−1 FW1.46a1.35b0.94c
Protein concentrationPC%4.44a4.24b3.52c

Description of the measured morphological parametersTabelle 2_ Beschreibung der gemessenen morphologischen Parameter

TraitsDescription/Method
ShLMaximum fresh shoot length (cm), measured from the base of the stem to the top of the plant
ShFWShoot fresh weight (g)
ShDWShoot dry weight (g) aher drying for 48 h at 70 ± 5 °C
RLMaximum fresh root length (cm), measured from the node where it divides from the stem to the top of the main root
RFWRoot fresh weight (g)
RDWRoot dry weight (g) aher drying for 48 h at 70 ± 5 °C
PCProtein concentration in %, determined by the Kjeldahl method (digestion of organic matter with sulfuric acid in the presence of a catalyst, rendering the reaction product alkaline, then distillation and titration of the liberated ammonia, calculation of the nitrogen content, and multiplication of the result by the conventional factor 6.25 to obtain the crude PC)
DOI: https://doi.org/10.2478/boku-2025-0004 | Journal eISSN: 2719-5430 | Journal ISSN: 0006-5471
Language: English
Page range: 52 - 62
Submitted on: Jul 17, 2025
Accepted on: Sep 21, 2025
Published on: Dec 5, 2025
Published by: Universität für Bodenkultur Wien
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2025 Sali Aliu, Dukagjin Zeka, Mimoza Jakupi, Bekim Gashi, Imer Rusinovci, Hans-Peter Kaul, published by Universität für Bodenkultur Wien
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.