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Sembiring, Riduan
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Effects of Naphthaleneacetic Acid and Kinetin on Chrysanthemum Plantlets in Vitro Sihotang, Saipul; Saragih, Magdalena; Sembiring, Swati; Sembiring, Riduan; Yanty, Dini Puspita; Tanjung, Denny Akbar; Afrida, Elli
Journal of Applied Agricultural Science and Technology Vol. 9 No. 4 (2025): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v9i4.315

Abstract

Naphthaleneacetic acid (NAA) and kinetin play a crucial role in plant growth but must be used in correct proportions in order to produce the best outcomes. An optimal combination of both can enhance shoot, leaf, and root growth, whereas inappropriate doses may otherwise inhibit growth due to hormonal imbalance. This study examined the effects of the interaction between NAA and kinetin on the growth of chrysanthemum plants at eight weeks of age. The research was carried out using the Completely Randomized Design (CRD) in triplicate. The medium used was MS medium, supplemented with NAA at concentrations of 0–1.5 mg/L and kinetin at concentrations of 0–3 mg/L. The results indicate that NAA and kinetin positively influenced plant growth, but only when the optimal concentrations were applied. The best combination of NAA at 1.0 mg/L (N2) and kinetin at 3.0 mg/L (K3) produced the best results in terms of height (153 mm), number of leaves (31 leaves), number of roots (26 roots), and fresh weight (5.85 g). Increasing kinetin concentrations (K0-3) generally promoted plant growth, whereas excessive NAA concentrations (> 1.0 mg/L, N3) produced the opposite effect, likely due to toxicity or hormonal imbalance. The interaction between kinetin and NAA exhibited a synergistic effect up to a certain threshold, while excessive NAA application negatively impacted on plant development.
Co-Authors br Karo, Seringena Butar-Butar, Marselinus Dedi Holden Simbolon, Dedi Holden Dewi Restuana Sihombing Elli Afrida Ginting, Rajiv Karo, Seringena Karo, Seringena Br Lisnasari, Srie Faizah Nasution, Lita Pa, Desi Adelia Br Pandiangan, Indera Prabowo Saipul Sihotang Saragih, Magdalena Sembiring, Swati Sianturi, Rivai Wulan Rejeki Silaban, Sri Rejeki Simbolon, Sri Hara Bintang Sinaga, Robert Sinulingga, Riski Adi Vindo Sitanggang , Timbul Tuahman Tanjung, Denny Akbar Tarigan, El Fanta Tarigan, Selvida Riahta br Yanty, Dini Puspita Yatantri, Shefia Ana Zega, Rusman