effects of gibberellic acid and salt stress on growth parameters and
chlorophyll content in oat cultivars
Chauhan1*, Nidhi Rajput1, Ashok Kumar1, J.S.
Verma2 and A.K. Chaudhry1
Botany, School of Sciences, IFTM University, Moradabad-244 001, India
Genetics and Plant Breeding, G.B. Pant University of Agriculture and
Technology, Pantnagar-263 145, India
Author E-mail: email@example.com
Paper received : 15.03.2017
Revised received : 02.11.2017
Re-revised received :
Accepted : 27.12.2017
Aim: The main
objective of this study was to evaluate the possible mode of interaction
between salinity and application of gibberellic acid (GA3) and exploring how
GA3 can mitigate the harmful effects of salinity. On the basis of
reduction, growth parameter and chlorophyll contents, the cultivars were
categorized as tolerant, moderate and sensitive.
Methodology: To determine the
effect of salinity on seed germination, seedling growth and chlorophyll
contents pot experiment was carried out. Three different varieties (UPo-212,
NDO-2 and UPO-94) were germinated under four different salinity levels (25,
50, 75 and 100mM). after 24 hrs., two sets of each were treated with 100 ppm
of GA3 (reused for 15 days).
Results: The results
revealed that when seedling were treated with GA3 under different
salinity conditions, cv. NDO-2 and UPO-212 showed better growth and high
chlorophyll content than cv. UPO-94. This study conducts that 100 ppm
concentrations of GA3 will be able to overcome the toxic effects
of salt stress in seed germination, seedling growth and chlorophyll contents.
Interpretation: The study reveals
that application of GA3 is useful to mitigate salinity stress and
is more effective on salt tolerant cultivars.
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