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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 69, No. 4, 2009, pp. 516-525
Bioline Code: cj09062
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 69, No. 4, 2009, pp. 516-525

 en Identification of two species of Fusarium check for this species in other resources link that cause wilting of colored callas ( Zantedeschia aethiopica check for this species in other resources (L.) Spreng.) cultivated under greenhouse conditions in Chile
Ciampi, Luigi P.; Nissen, Juan M.; Venegas, Elizabeth G.; Fuentes, Ricardo P.; Costa, Marcia L.; Schöbitz, Renate T.; Alvarez, Eduardo D. & Alvarado, Pilar A.

Abstract

Calla ( Zantedeschia aethiopica check for this species in other resources (L.) Spreng.) is a flower that is conquering international markets. It is very important to maintain the healthiness of the crop during its development in order to obtain high quality plants that meet the demands of the markets. The objective of this investigation was to determine the etiological agent(s) of a pathology never observed before in Chile that causes vascular wilt during the cultivation of colored calla developed under greenhouse conditions. Fungal isolates were collected from infected plants. Pathogenicity tests, microscopic observations, and scanning electronic microscopy evaluations were also conducted. Healthy calla tubers were inoculated with isolates of the genus Fusarium check for this species in other resources Link. Plants grown during 5 months in a climatic chamber showed five classes of symptoms: damping off, dwarfism, intense wilting, mild wilting and no symptoms. The isolates were identified at the species level and it was found that 20% was Fusarium solani check for this species in other resources (Mart.) Sacc. and 80% was Fusarium oxysporum check for this species in other resources Schltdl. Results and collected evidence these two new species that affect production of calla under greenhouse conditions in Chile.

Keywords
Fusarium solani, Fusarium oxysporum, colored calla, Zantedeschia aethiopica.

 
 es Identificación de dos especies de Fusarium check for this species in other resources Link causantes de marchitez vascular en calas de colores ( Zantedeschia aethiopica check for this species in other resources (L.) Spreng.) cultivadas bajo condiciones de invernadero en Chile
Ciampi, Luigi P.; Nissen, Juan M.; Venegas, Elizabeth G.; Fuentes, Ricardo P.; Costa, Marcia L.; Schöbitz, Renate T.; Alvarez, Eduardo D. & Alvarado, Pilar A.

Resumen

El cultivo de la cala de color ( Zantedeschia aethiopica check for this species in other resources (L.) Spreng.) es un producto que está conquistando los mercados internacionales. Para su producción es de vital importancia mantener la sanidad en el cultivo durante su desarrollo, para obtener plantas de calidad que cumplan con los requerimientos exigidos por los mercados. El objetivo de esta investigación fue establecer el o los agentes etiológicos involucrados con la súbita aparición de síntomas de marchitez vascular en plantas de calas cultivadas bajo invernadero. Para esto se realizó una colección de cepas fúngicas a partir de muestras de plantas afectadas. Además, se realizaron pruebas de patogenicidad, observaciones microscópicas y de microscopía electrónica de barrido. Túberos sanos de cala fueron inoculados con cepas del género Fusarium check for this species in other resources Link. Éstos se desarrollaron durante 5 meses en una cámara climática, en donde manifestaron síntomas de caída de plántulas, enanismo, marchitez vascular intensa, marchitez vascular leve y plantas sin síntomas. Finalizado el ensayo se identificaron las cepas a nivel de especie, encontrando cerca de un 20% de Fusarium solani check for this species in other resources (Mart.) Sacc. y un 80% de Fusarium oxysporum check for this species in other resources Schltdl., siendo este último más virulento. Los resultados obtenidos y las evidencias recolectadas muestran a estas dos especies fitopatógenas nuevas que afectan al cultivo de cala de color bajo condiciones de invernadero para Chile.

Palabras-clave
Fusarium solani, Fusarium oxysporum, cala de color, Zantedeschia aethiopica

 
© Copyright 2009 Chilean Journal of Agricultural Research.
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