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VOL. 4, ISSUE 2 (2022)
Role of plant growth hormones in regulating growth stages and reproductive development in maize (Zea Mays L.)
Authors
Dr. Chavan Syamraj Naik, Dr. Vijay Kumar
Abstract
The regulation of growth and reproductive development in maize (Zea mays L.) is intricately coordinated by phytohormones such as auxins, gibberellins (GAs), cytokinins (CKs), abscisic acid (ABA), ethylene, salicylic acid (SA), jasmonic acid (JA), and brassinosteroids (BRs). These hormones influence key physiological transitions—from germination and root–shoot axis establishment to flowering, pollination, and kernel development—by modulating gene expression, enzyme activity, and stress responses. This comprehensive review dissects the spatiotemporal roles of these hormones at different developmental phases, emphasizing their interactions (crosstalk), feedback mechanisms, and stress-induced fluctuations. Special focus is placed on how hormonal imbalances under abiotic stress (drought, salinity, heat, and oxidative damage) compromise reproductive success by impairing pollen viability, stigma receptivity, ovule fertilization, and grain filling. The review further explores agronomic and biotechnological interventions such as exogenous hormone applications, hormone priming, and integration into crop management systems. Additionally, the paper highlights emerging research tools—including QTL mapping, transcriptomics, and hormone diagnostics—for precision breeding of stress-resilient maize cultivars. These insights contribute to understanding how targeted hormonal regulation can stabilize maize productivity in the face of climate variability.
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Pages:119-127
How to cite this article:
Dr. Chavan Syamraj Naik, Dr. Vijay Kumar "Role of plant growth hormones in regulating growth stages and reproductive development in maize<i> (Zea Mays L.)</i>". International Journal of Agriculture and Plant Science, Vol 4, Issue 2, 2022, Pages 119-127
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