Hassan, Shaymaa (2026) Effect Different Concentrations of Growth Regulator on Morphological Traits of Zea mays L. and Pennisetum glaucum Seedlings. International Journal Multidisciplinary (IJMI), 3 (4). ISSN 3031-9870

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Abstract

Effect of different concentrations of the growth regulator ATONIK on the morphological characteristics of germinated Zea mays L. (ZM) and Pennisetum glaucum (PG) seeds were studied. In the laboratories of Tikrit University/College of Education for Women/Department of Life Sciences, the study was conducted. The experimental design included four treatments: a control group T1, and three concentrations of growth regulator T2(0.05 ml/kg), T3(0.075 ml/kg) and T4(0.1 ml/kg) of seeds with seedling growth monitored over 15 days. The results show a significant (P≤0.05) advantage of the growth regulator ATONIK in T4 where root length reach (6.16)cm and the stem length (5.01cm) at the end of the experiment. Early superiority was observe in T3 follow by a convergence in growth favoring the highest concentration over time. On vegetative growth stage (ZM) in T3 exhibited a strong early response in stem growth and root length during the first six days while T2 show, a marked physiological acceleration in later stages rivaling in T3 in the final length. In biomass the high concentrations in each T3 and T4 groups resulted in the highest wet and dry weight values for both crops reflecting the regulator efficiency, in directing the food seed stock towards vegetative structural growth. According to the optimal concentration, statistical analysis showed confirmed that 0.1 ml of ATONIK is the for maximizing the growth response in the vegetative growth stage PG. The vegetative growth stage (ZM) exhibited a dynamic response dependent on the interaction between concentration and physiological stage. All results indicate that the use of these stimulants is an effective strategy for increasing green fodder productivity and overcoming slow growth constraints in controlled environments.

Item Type:	Article
Uncontrolled Keywords:	ATONIK, Zea mays, Pennisetum glaucum, Morphological characteristics, Growth regulator
Subjects:	H Social Sciences
Depositing User:	admin eprints
Date Deposited:	13 Sep 2026 10:08
Last Modified:	13 Sep 2026 10:08
URI:	http://eprints.umsida.ac.id/id/eprint/17071

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