Moses Akindele ABIALA 
Department of Biological Sciences, Mountain Top University, Prayer
City, Ogun State – Nigeria
Department of Biosciences and Bioengineering, Indian Institute
of Technology, Guwahati, Assam – India
Saurov Jyoti ROY
Department of Biosciences and Bioengineering, Indian Institute
of Technology, Guwahati, Assam – India
Department of Botany, Guahati University, Guwati, Assam –
India
Lingaraj SAHOO
Department of Biosciences and Bioengineering, Indian Institute
of Technology, Guwahati, Assam – India
https://doi.org/10.47743/jpd.2022.29.1.900
Keywords: legumes, plant stress, seed germination,
stress tolerance, water stress.
Abstract: At the early vegetative growth stage,
mungbean are mostly affected by drought, and it is also one of
the most promising stages that can be used to screen for drought
stress tolerance traits in multiple varieties. Therefore, this
study utilized polyethylene glycol (PEG-6000) to induce drought
stress towards selection of drought tolerance mungbean varieties
in their early vegetative growth stage using both hydroponics
and soil based systems. In this study, leaf wilting index and
responses of biochemical molecules were used as the basic factors
to determine the effect of PEG-induced drought stress among the
mungbean varieties. Prior to the imposition of drought stress,
germination potentials of the varieties were evaluated and all
had germination = 60%. Except for Tvr29 and Tvr44, hydroponic
system revealed that = 80% of the varieties had = 1 of their leaves
significantly (P = 0.05) wilted. The highest LWI were recorded
for Tvr49 and Tvr79. Re-evaluation of Tvr29, Tvr44, Tvr49 and
Tvr79 using soil, shows that Tvr29 and TVr44 resisted drought
stress. The hydrogen peroxide, superoxide radical and malondialdehyde
contents decreased in TVr29 and Tvr44, and increased in Tvr49
and Tvr79 in comparison to the control. Tvr29 and Tvr44 had high
proline content than Tvr49 and Tvr79. Based on LWI and biochemical
molecules, this study revealed that Tvr29 and Tvr44 should be
utilized where water deficit is a challenge to mungbean globally.
How to cite this article:
ABIALA M. A., ROY S. J. C. & SAHOO L. 2022. Effect of peg-induced
drought stress on mungbean plants revealed resistant varieties
based on leaf wilting index and biochemical molecules. J.
Plant Develop. 29: 117-131.
https://doi.org/10.47743/jpd.2022.29.1.900
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