Biocelebes
Vol. 11 No. 2 (2017)

Pengamatan Oncobasidium theobromae secara Makroskopis dan Mikroskopis, serta Gejala Serangan Sebagai penyebab Penyakit Vascular Streak Dieback (VSD) pada Tanaman Kakao di Kabupaten Sigi, Sulawesi Tengah

Sitti Ardianti (Unknown)
Umrah Umrah (Unknown)
Asrul Asrul (Unknown)

Article Info

Publish Date
25 Dec 2017

Abstract

Oncobasidium theobromae are fungi that causes disease Vascular Streak Dieback (VSD) on the cocoa plants which can causes a totaly death, because the mechanism attack which systemic. The purpose of this study was to observe the morphology of O. theobromae macroscopically and microscopically, as well as symptoms of VSD attack on the cacao plants. This research was conducted from March to August 2016 in the Laboratory of Biotechnology Department of Biology, Faculty of Mathematics and Natural Sciences, Tadulako University (FMIPA UNTAD). The result of macroscopic observation showed that O. theobromae have white mycelium on the early growth, then the color change to cream and texture like cotton. In microscopic observation, it has branched mycelium and irregular septate. VSD attack symptoms characterized with the leaf has necrosis, the former sitting leaf and the leaf base has three dots, twigs become  toothless and the ends of twigs become dry.

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Journal Info
Biocelebes
Website

Abbrev

Biocelebes

Publisher

Universitas Tadulako

Subject

Agriculture, Biological Sciences & Forestry

Description

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