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  5. Growth Responses of Okra (Abelmoschus esculentus L. Moench) to Selected Plant Growth Regulators
 
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Growth Responses of Okra (Abelmoschus esculentus L. Moench) to Selected Plant Growth Regulators

Journal
Advanced and Sustainable Technologies (ASET)
ISSN
2976-2294
Date Issued
2024-06-03
Author(s)
Fadhilnor Abdullah
Universiti Malaysia Perlis
Mohd Zamzuri Mohammad Zain
Universiti Malaysia Perlis
Syarifah Rokiah Syed Kamaruzaman
Universiti Malaysia Perlis
Muhammad Nur Aiman Uda
Universiti Malaysia Perlis
Zainal Abidin Arsat
Universiti Malaysia Perlis
Muhammad Firdaus Abdul Muttalib
Universiti Malaysia Perlis
Mohd Khairul Rabani Hashim
Universiti Malaysia Perlis
DOI
https://doi.org/10.58915/aset.v3i1.788
Handle (URI)
https://ejournal.unimap.edu.my/index.php/aset/article/view/788/508
https://hdl.handle.net/20.500.14170/14553
Abstract
This study was conducted to evaluate the effects of two types of plant growth regulators (PGRs) which are gibberellins (GA3) and Paclobutrazol (PBZ) on the growth and photosynthetic pigment (chlorophyll) of Okra (Abelmoschus esculentus L. Moench) plants. Exogenous applications of GA3 and PBZ with different concentrations (i.e. 20, 40, 80 and 100 mg/L) were sprayed on two-week-old Okra plants under the nursery stage. The control plants were only treated with distilled water. The stem diameter (mm) of treated and control plants was measured weekly. At the end of the experimental period, data on growth characteristics such as plant height (cm), leaf area (cm2) and number of leaves were recorded. The estimation of chlorophyll was measured using the SPAD-502 Chlorophyll Meter. Results showed that the plant morphological characteristics of Okra plants were significantly affected by the application of GA3 and PBZ (P<0.0001). In addition, stem growth (expressed as stem cross-sectional area- mm2) of Okra plants was significantly increased with increasing GA3 concentrations. In contrast, applying PBZ reduced Okra plants' stem growth. This study highlighted the major effects of GA3 and PBZ on the growth of Okra plants when planted under tropical climate conditions.
Subjects
  • Growth

  • PGRs

  • Chlorophyll

  • GA3

  • PBZ

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Growth Responses of Okra to Selected Plant Growth Regulators.pdf (609.94 KB)
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