ORIGINAL RESEARCH
Assessment of Callogenesis and Regeneration
Potential of High-Yielding Wheat
(Triticum aestivum L.) Varieties
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1
Department of Botany, Government College Women University, Faisalabad, Pakistan
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Agricultural Biotechnology Research Institute, Ayub Agricultural Research Institute (AARI), Faisalabad, Pakistan
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Department of Botany, University of Agriculture, Faisalabad, Pakistan
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Department of Botany, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
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Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur,
Bahawalpur, 63100, Pakistan
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College of Agronomy, Northwest A & F University, Yangling, 712100 Shaanxi, China
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Department of Botany and Microbiology, College of Science, King Saud University,
P.O. 2455, Riyadh 11451, Saudi Arabia
Submission date: 2024-06-12
Final revision date: 2024-08-22
Acceptance date: 2025-05-17
Online publication date: 2025-08-21
Corresponding author
Mehwish Naseer
Department of Botany, Government College Women University, Faisalabad, Pakistan
Usman Zulfiqar
Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur,
Bahawalpur, 63100, Pakistan
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ABSTRACT
Tissue culture is a vital aspect of plant biotechnology that facilitates the development of diseaseresistant
and stress-tolerant crops that are challenging to produce by conventional breeding methods.
The present study evaluated the callus induction and regeneration capability of five high-yielding wheat
varieties by optimizing the concentrations of different plant hormones. Immature embryos from five
wheat varieties (Akbar-2019, Arooj-2022, Dilkash-2020, Subhani-2021, and MH-2021) were used in the
experiment. Three plant hormones, i.e., 2,4-D (2,4-Dichlorophenoxyacetic acid), IBA (indole-3–butyric
acid), and NAA (naphthalene acetic acid), each having 5 levels (1 to 5 mg/L), were tested for devising
an efficient procedure for callus induction. Callus tissues were subsequently subjected to regeneration
using 3 levels of kinetin (0.5, 1, and 1.5 mg/L) and 2 levels of NAA (0.5 and 1 mg/L). Callus formation
was absent at all levels of NAA and IBA but was observed at all levels of 2,4-D except at 1 mg/L.
The most effective concentration for callus induction across all varieties, except Subhani, was 3 mg/L
of 2,4-D. Shoot regeneration was at its maximum at 1.5 mg/L across all wheat varieties, while root
regeneration was observed at both levels of NAA, with the most prominent at 1 mg/L. Among the
varieties tested, Dilkash, MH, and Arooj showed superior regeneration potential, while all varieties
except Subhani demonstrated strong callogenesis potential. These findings suggest that a protocol utilizing 3 mg/L 2,4-D, 1.5 mg/L kinetin, and 1 mg/L NAA is optimal for the propagation of these
wheat varieties. This research advances tissue culture techniques for wheat by optimizing hormone
concentrations, leading to the formulation of an efficient and reliable protocol for wheat culturing.
It highlights the varietal differences in tissue culture responses, aiding breeders in propagating
disease-resistant and high-yielding wheat varieties.