SCREENING OF INDIAN PEANUT GENOTYPES FOR RESISTANCE TO CERCOSPORA LEAFSPOT UNDER SAVANNA CONDITIONS

Jesús Rafael Méndez‑Natera; Joseba Andoni Luna‑Tineo; Luis Arnaldo Barrios‑Azócar; Jesús Rafael Cedeño

doi:10.9755/ejfa.2016-02-146

Authors

Jesús Rafael Méndez‑Natera Departament of Agronomy, School of Agricultural Engineering, Monagas Nucleus, Universidad de Oriente (Oriente University), Avenue Universidad Campus Los Guaritos, Maturín, 6201, Monagas State, Venezuela
Joseba Andoni Luna‑Tineo Departament of Agronomy, School of Agricultural Engineering, Monagas Nucleus, Universidad de Oriente (Oriente University), Avenue Universidad Campus Los Guaritos, Maturín, 6201, Monagas State, Venezuela
Luis Arnaldo Barrios‑Azócar Departament of Agronomy, School of Agricultural Engineering, Monagas Nucleus, Universidad de Oriente (Oriente University), Avenue Universidad Campus Los Guaritos, Maturín, 6201, Monagas State, Venezuela
Jesús Rafael Cedeño Departament of Agronomy, School of Agricultural Engineering, Monagas Nucleus, Universidad de Oriente (Oriente University), Avenue Universidad Campus Los Guaritos, Maturín, 6201, Monagas State, Venezuela

DOI:

https://doi.org/10.9755/ejfa.2016-02-146

Keywords:

Arachis hipogaea, Disease damage, Pythopathogen fungi, Resistant plants

Abstract

The objective was to evaluate the Indian and Venezuelan peanut cultivars (PC) for agronomic performance and resistance to Cercospora
leaf‑spot (CLS) diseases for selection. The study covered three experiments: In the first one, 15 PC were evaluated (13 from India
classified as resistant to CL and two native, Desconocida‑36 and Americano Chico (AC)) in a RBD. In the second one, 15 PC (12 from
India classified as early maturing) and three native (Rojo, Rosado and AC) in a RBD. In the third experiment, 25 PC were evaluated (22 from
India classified as confectionery) and three native (Rojo, Rosado and AC) in a triple lattice design. In all experiments, three replications were
used and probability level was 5%. Fungicide aspersions were not carried out. The two species of Cercospora identified were Cercospora
arachidicola and Cercosporidium personatum. Peanut cultivars found to be high yielding were Desconocida‑36 with 1944.6 kg/ha and cv.
86325 with 2035.3 kg/ha, both with intermediate tolerance. Cultivars 88401 and 88395 were classified as tolerant because of restricting
fungicide application in the experiments.