Susceptibility of Almond (Prunus dulcis) Cultivars to Twig Canker and Shoot Blight Caused by Diaporthe amygdali
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Autor/a
Beluzán, Francisco
Abad-Campos, Paloma
Armengol, Josep
Fecha de publicación
2022-06-13ISSN
0191-2917
Resumen
Twenty-five almond cultivars were assessed for susceptibility to Diaporthe amygdali, causal agent of twig canker and shoot blight disease. In laboratory experiments, growing twigs were inoculated with four D. amygdali isolates. Moreover, growing shoots of almond cultivars grafted onto INRA ‘GF-677’ rootstock were used in 4-year field inoculations with one D. amygdali isolate. In both types of experiments, inoculum consisted of agar plugs with mycelium, which were inserted underneath the bark, and the lesion lengths caused by the fungus were measured. Necrotic lesions were observed in the inoculated almond cultivars in both laboratory and field tests, confirming the susceptibility of all evaluated cultivars to all inoculated isolates of D. amygdali. Cultivars were grouped as susceptible or very susceptible according to a cluster analysis. The relationship between some agronomic traits and cultivar susceptibility was also investigated. Blooming and ripening times were found to be relevant variables explaining cultivar performance related to D. amygdali susceptibility. Late and very late blooming and early and medium ripening cultivars were highly susceptible to D. amygdali. Our results may provide valuable information that could assist in ongoing breeding programs of this crop and in the selection of cultivars for new almond plantations.
Tipo de documento
Artículo
Versión del documento
Versión aceptada
Lengua
Inglés
Materias (CDU)
633 - Cultivos y producciones
Páginas
35
Publicado por
American Phytopathological Society
Publicado en
Plant Disease
Citación
Beluzán, Francisco, Xavier Miarnau, Laura Torguet, Lourdes Zazurca, Paloma Abad-Campos, Jordi Luque and Josep Armengol. 2022. "Susceptibility Of Almond (Prunus Dulcis) Cultivars To Twig Canker And Shoot Blight Caused By Diaporthe Amygdali". Plant Disease 106 (7):1890-1897. doi:10.1094/PDIS-09-21-1875-RE
Número del acuerdo de la subvención
INIA-FEDER/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2017-00009-C04-01/ES/Estrategias de control de enfermedades fúngicas del almendro basadas en la epidemiología, en la genética de la resistencia y en las prácticas de cultivo/
INIA-FEDER/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2017-00009-C04-04/ES/Estudio integrado de Diaporthe y Phytophthora en almendro/
MICINN-FEDER/Programa Estatal de I+D+I orientada a los retos de la sociedad/PID2020-114648RR-C33/ES/BIOLOGIA, EPIDEMIOLOGIA Y CONTROL DE DIAPORTHE AMYGDALI Y OOMICETOS FITOPATOGENOS EN ALMENDRO/
Program
Fructicultura
Protecció Vegetal Sostenible
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