Skripsi

INDUKSI RESISTENSI MENGGUNAKAN SENYAWA ASAM SALISILAT SEBAGAI PENGENDALIAN PENYAKIT Ceratocystis PADA TANAMAN DUKU (Lansium domesticum Corr.) DI SUMATRA SELATAN Indrajaya,

---

Duku (Lansium domesticum Corr), a member of the Meliaceae family, was one of Indonesia’s native woody perennial species characterized by its high latex content. Plant diseases were among the major factors causing yield losses in the agricultural sector worldwide, particularly those induced by the pathogen Ceratocystis. The impact of plant diseases not only reduced the quantity of agricultural production but also affected the quality of the harvested products. This study was conducted to determine the effectiveness of salicylic acid in inducing resistance as a control strategy against Ceratocystis disease in duku plants. The experiment was arranged using a Completely Randomized Design (CRD) consisting of five treatments, including a control, with ten replications. Each treatment received salicylic acid applications at different concentrations: P0 = 0 mM, P1 = 5 mM, P2 = 10 mM, P3 = 20 mM, and P4 = 40 mM. The in vitro assay showed that salicylic acid consistently inhibited the mycelial growth of Ceratocystis. At higher SA concentrations, the fungal colony growth decreased based on vertical, horizontal, and total colony area measurements. This reduction occurred because SA possessed phenolic properties capable of disrupting fungal cell membrane permeability and decreasing nutrient transport efficiency in the medium. In vivo observations also demonstrated inhibitory effects; however, lower concentrations performed better in suppressing disease development because higher concentrations tended to be phytotoxic to the host plant. All treatments inhibited mycelial growth, with P4 (40 mM) being the most effective in suppressing the mycelial growth of Ceratocystis on MEA medium. The mortality rates of duku seedlings under treatments P1, P3, and P4 were 40%, while those in P0 and P2 reached 50%. The lowest disease severity occurred in P1 (60%), whereas the highest was observed in P0 (80%).

---

Availability

Detail Information

Series Title

-

Call Number

T1908292025

Publisher

Indralaya : Prodi Proteksi Tanaman, Jurusan Hama dan Penyakit Tumbuhan, Fakultas Pertanian Universitas Sriwijaya., 2025

Collation

xi, 97 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

-

Classification

632.407

Content Type

Text

Media Type

-

Carrier Type

-

Edition

-

Subject(s)

Penyakit tanaman
Prodi Proteksi Tanaman

Specific Detail Info

-

Statement of Responsibility

TUTI

Other version/related

File Attachment

Comments

---

You must be logged in to post a comment