Peningkatan Pertumbuhan Phalaenopsis amabilis (L.) Blume secara In Vivo dengan Thidiazuron (TDZ)

Authors

  • Evi Nur Cahyani Departemen Biologi Fakultas Sains dan Matematika Universitas Diponegoro, Jl. Prof. Sudarto, Tembalang, Semarang 50275, Indonesia
  • Nintya Setiari Departemen Biologi Fakultas Sains dan Matematika Universitas Diponegoro, Jl. Prof. Sudarto, Tembalang, Semarang 50275, Indonesia
  • Yulita Nurchayati Departemen Biologi Fakultas Sains dan Matematika Universitas Diponegoro, Jl. Prof. Sudarto, Tembalang, Semarang 50275, Indonesia

DOI:

https://doi.org/10.29244/jhi.16.2.92-99

Abstract

Phalaenopsis amabilis (L.) Blume is a type of orchid widely used as an ornamental plant and as a parent species in breeding programs. 
Overexploitation and slow vegetative growth make this species a target for ex-situ conservation efforts, which can be supported through the application of nutrients and plant growth regulators, such as Thidiazuron (TDZ). This study aimed to examine the effect of TDZ application 
and determine the optimal concentration of TDZ for the growth of P. amabilis. The research was conducted from November 2023 to January 
2024 in Tembalang, Semarang, using a Completely Randomized Design (CRD) with a single factor, namely TDZ concentration (0.25, and 50 
ppm). The observed parameters included the length and width of existing leaves, the number and emergence time of new leaves, leaf color, the number and emergence time of new roots, and stomatal density. Data were analyzed using ANOVA followed by Duncan’s Multiple Range Test. The results showed that TDZ significantly enhanced the length and width of existing leaves, the number and emergence time of new leaves, and stomatal density in P. amabilis. Thidiazuron (TDZ) also affected leaf color. The best concentration for promoting leaf growth was 25 ppm TDZ.

 
Keywords: conservation, cytokinin, growth regulator, vegetative

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Published

2025-08-31

Issue

Vol. 16 No. 2 (2025): Jurnal Hortikultura Indonesia (JHI)

Section

Articles

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How to Cite

Peningkatan Pertumbuhan Phalaenopsis amabilis (L.) Blume secara In Vivo dengan Thidiazuron (TDZ). (2025). Jurnal Hortikultura Indonesia (JHI), 16(2), 92-99. https://doi.org/10.29244/jhi.16.2.92-99