| Full text | |
| Author(s): |
Devite, Fernando Trevizan
;
de Azevedo, Fernando Alves
;
Bastianel, Marines
;
Schinor, Evandro Henrique
;
da Conceicao, Patricia Marluci
Total Authors: 5
|
| Document type: | Journal article |
| Source: | HORTICULTURAE; v. 9, n. 6, p. 13-pg., 2023-06-01. |
| Abstract | |
Alternaria brown spot (ABS) is a disease caused by the fungus A. alternata f. sp. citri, which results in lesions on the fruits, leaves, and branches of several mandarin varieties and their hybrids. Due to the high cost of fungicide application, alternative methods for controlling ABS need to be studied. Therefore, this study aimed to evaluate the use of essential oils (EOs) from different mandarin varieties to mitigate the effects of ABS. The inhibitory effect of different concentrations (1, 2, 4, 8, and 16 & mu;L & BULL;mL(-1)) of the EOs of Fremont IAC 543 mandarin, IAC 2019Maria mandarin, Murcott IAC 221 tangor, and Late IAC 855 willowleaf on the in vitro mycelial growth of the fungus A. alternata was evaluated. Additionally, the curative and preventive effects of these EOs on the ABS symptoms in detached leaves of Murcott IAC 221 tangor were also assessed. The EO of IAC 2019 Maria mandarin induced less mycelial growth, and consequently, a greater inhibition of the growth of the fungus A. alternata at a concentration of 16 & mu;L & BULL;mL(-1). This EO was more effective for control than the other oils tested. In the detached leaf experiment, both the curative and preventive treatments at a concentration of 16 & mu;L & BULL;mL(-1) showed lower values of disease severity. (AU) | |
| FAPESP's process: | 17/24564-1 - Fruit and juice quality in the mandarins selection |
| Grantee: | Marinês Bastianel |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 20/07045-3 - Biotechnological and genomic strategies for quality, productivity and sustainable management of citrus, coffee and sugar cane in the State of São Paulo |
| Grantee: | Mariângela Cristofani-Yaly |
| Support Opportunities: | Research Grants - Problem-Oriented Research Centers in São Paulo |