Pengaruh Elisitasi in Vivo dengan PEG 6000 melalui Aplikasi Foliar Spray dan Direct Soil terhadap Pertumbuhan Lavandula angustifolia

Ramadita, Aprillya Safitri (2026) Pengaruh Elisitasi in Vivo dengan PEG 6000 melalui Aplikasi Foliar Spray dan Direct Soil terhadap Pertumbuhan Lavandula angustifolia. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tanaman lavender (Lavandula angustifolia) secara luas diutilisasi pada bagian bunga sebagai bahan baku ekstraksi minyak atsiri. Guna mengoptimalkan laju pertumbuhan serta menstimulasi biosintesis senyawa metabolit sekunder secara lebih efisien, diterapkan teknik elisitasi. Penelitian ini bertujuan mengevaluasi efektivitas elisitasi Polyethylene Glycol (PEG) 6000 melalui metode foliar spray dan direct soil terhadap respons adaptif tanaman lavender (Lavandula angustifolia). Metode penelitian yang dilakukan menggunakan konsentrasi PEG 6000 sebesar 0%, 1,25%, 2,5%, dan 5% yang diaplikasikan melalui teknik foliar spray dan direct soil. Hasil menunjukkan bahwa aplikasi PEG 6000 efektif menginduksi cekaman osmotik yang secara signifikan menurunkan tinggi tanaman dan luas daun akibat fenomena cytorrhysis. Namun, perlakuan ini berhasil meningkatkan rasio root-to-shoot (R:S) serta memicu adaptasi fisiologis berupa penurunan klorofil, juga densitas stomata untuk efisiensi transpirasi dan peningkatan densitas trikoma guna regulasi suhu daun. Disimpulkan bahwa metode direct soil memberikan efek cekaman yang lebih persisten dan respons perakaran yang lebih kuat dibandingkan foliar spray. Secara keseluruhan, elisitasi in vivo dengan PEG 6000 mampu mengoptimalkan mekanisme pertahanan tanaman terhadap keterbatasan air.
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Lavender (Lavandula angustifolia) is widely utilized for its flowers as a raw material for essential oil extraction. To optimize growth rates and stimulate the biosynthesis of secondary metabolites more efficiently, elicitation techniques are applied. This study aims to evaluate the effectiveness of Polyethylene Glycol (PEG) 6000 elicitation through foliar spray and direct soil methods on the adaptive responses of lavender (Lavandula angustifolia). The research methodology employed PEG 6000 concentrations of 0%, 1.25%, 2.5%, and 5%, applied via foliar spray and direct soil techniques. The results indicate that the application of PEG 6000 effectively induces osmotic stress, which significantly reduces plant height and leaf area due to the phenomenon of cytorrhysis. However, this treatment successfully increases the root-to shoot (R:S) ratio and triggers physiological adaptations, including a decrease in chlorophyll content and stomatal density for transpiration efficiency, as well as an increase in trichome density for leaf temperature regulation. It is concluded that the direct soil method provides a more persistent stress effect and a stronger root response compared to the foliar spray. Overall, in vivo elicitation with PEG 6000 is capable of optimizing plant defense mechanisms against water limitation.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Direct soil, Elisitasi, Foliar spray, Lavandula angustifolia, PEG 6000, Direct soil, Elicitation, Foliar spray, Lavandula angustifolia, PEG 6000.
Subjects:	Q Science > QH Biology Q Science > QH Biology > QH301 Biology Q Science > QK Botany > QK710 Plant physiology Q Science > QK Botany > QK731 Growth (Plants)
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Biology > 46201-(S1) Undergraduate Thesis
Depositing User:	Aprillya Safitri Ramadita
Date Deposited:	30 Jan 2026 07:12
Last Modified:	30 Jan 2026 07:13
URI:	http://repository.its.ac.id/id/eprint/131272

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