IDENTIFIKASI MORFOLOGI DAN ANATOMI Rhizoctonia MIKORIZA DARI LIMA ANGGREK SPESIES Dendrobium sp.

SYALAYSA IMANI, FATIHAH IDENTIFIKASI MORFOLOGI DAN ANATOMI Rhizoctonia MIKORIZA DARI LIMA ANGGREK SPESIES Dendrobium sp. JURNAL.

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Abstract

Rhizoctonia mycorrhizal fungi are important symbionts for orchids, supporting nutrient uptake and early growth. This study aimed to identify the morphological and anatomical characteristics of Rhizoctonia mycorrhiza isolated from five Dendrobium species (D. spectabile, D. lineale, D. aphyllum, D. discolor, and D. fimbriatum). Fungi were isolated on Potato Dextrose Agar (PDA), and colony morphology was observed macroscopically, while hyphal structures were examined microscopically using Safranin O staining. All isolates showed typical Rhizoctonia-like features, including white–cream colonies with radial growth, hyphae branching at 90°, and septa near branching points. Binucleate cells were dominant, with the highest percentage in D. aphyllum (80%) and the lowest in D. discolor (44%). These results indicate that host species influence the variation of Rhizoctonia mycorrhiza and provide a basis for mycorrhiza-based orchid cultivation.

Item Type:	Article
Subjects:	S Agriculture > SB Plant culture
Divisions:	Fakultas Pertanian
Depositing User:	Ikawati Hadi Utami A.Md
Date Deposited:	25 Feb 2026 07:48
Last Modified:	25 Feb 2026 07:48
URI:	http://repository.utp.ac.id/id/eprint/2259

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