Morphological and physiological characteristics of cocoa (Theobroma cacao L. var. criollo) infected by Phytophthora palmivora in cocoa plantations in Southeast Sulawesi Indonesia.

Autor: Muzuni, Ambardini, S., Widyaningsih, A. S., Ismaun
Předmět:
Zdroj: AIP Conference Proceedings; 2023, Vol. 2704 Issue 1, p1-8, 8p
Abstrakt: Phytophthora palmivora is an organism that causes fruit rot disease which greatly affects the productivity of cocoa pods (Theobroma cacao L.). The purpose of this study was to determine the morphological and physiological characteristics of cocoa pods that were healthy and infected with Phytopthora palmivora on cocoa plantations in Southeast Sulawesi, Indonesia. The morphological characterization included the surface of the fruit skin, the thickness of the fruit skin, the size and the color of the fruit. Physiological characterization includes anthocyanin levels, chlorophyll levels and beta-carotene levels using spectrophotometric methods. Based on the results of morphological characterization, it was shown that the thicker the skin of the fruit, the lower the attack of Phythopthora palmivora infection. The rough surface of the cocoa pods will be susceptible to attack by Phythopthora palmivora, while the size and color of the fruit have no impact on Phythopthora palmivora attack. The results of the physiological characterization of cocoa pods showed that anthocyanin levels increased in fruit infected with Phythopthora palmivora than healthy cocoa pods at each fruit age. Chlorophyll and beta-carotene levels in cocoa pods infected with Phythopthora palmivora decreased with each fruit age. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index