Response of Arabica Coffee collections to Coffee Berry Disease (Colletotrichum kahawae), In Oromia Regional State, Ethiopia
Résumé
Abstract Ethiopia mainly uses resistant varieties and cultural disease management strategies to tackle this disease. However, still there is a lack of improved and resistant varieties in coffee growing areas of the country including Arsi Zone. The objectives of this study were to investigate the resistance of Arsi coffee collections to Coffee Berry Disease through artificial inoculation of green berries on mother trees, and younger coffee seedlings under controlled conditions. The field experiment was conducted at Gololcha (Arbagugu state farm) and Mechara Agricultural research center on station. A hypocotyl test was conducted at Jimma Agricultural research center. Field test was carried out on 13 Arsi coffee collections and the Coffee Berry Disease -susceptible Arusa coffee variety. Standard checks like susceptible variety (370) and resistant varieties 741 and 754 were used for hypocotyl tests. Seventeen treatments were used for hypocotyl tests. Result showed the presence of a significant difference in Coffee Berry Disease reaction levels among genotypes (P < 0.001) under field conditions. The infection percentage of berries varied from 2.89 to 25.93% at Gololcha (Arbagugu state farm) and 3.25 to 34.92% at Mechara three weeks after treatment applications. According to the results, the resistant variety 741 showed the lowest infection percentage (15.04%) in comparison to all other collections and/or varieties at the seedling stage. Therefore, coffee collections that showed the lowest level of infection percentage under both experimental conditions (Ar15/11, Ar05/11, and Ar70/11) were recommended for further breeding strategies to develop resistant coffee varieties against the disease.
Citer ce document
Accès au document
Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter
Voir l'article sur le site de la revueAuteur(s)
Statistiques
Consultations : 1
Téléchargements : 0