[Epidemiology of Mycosphaerella graminicola in Chile]
1995
Madariaga B, R.
English. This paper presents epidemiological data on septoria leaf blotches of wheat in Chile. It also outlines the life cycle of these fungi that survive on straw and stubble. The role of straw, its production at a national level, and its implication for the increase of primary inoculum are addressed. In 1991 the monthly maturation of the fungi's pseudothecia was studied at the Chillan Research station. The absence of ascostroma in the green tissue was noted. Mature perithecioid pseudothecia were increasingly present from February onward, peaking in April and May. This coincided with the highest levels of disease symptoms in the relevant nurseries.
Show more [+] Less [-]Spanish; Castilian. En el presente trabajo se presentan antecedentes epidemiologicos de septoriosis de la hoja en Chile, el ciclo de vida del agente causal, hongos de la microflora del rastrojo, cantidad de rastrojo producido a nivel nacional y sus implicancias en el aumento de inoculo primario. Se determino la maduracion mensual de pseudotecios del hongo durante 1991 en la localidad de Chillan, observandose ausencia del ascostroma en tejido verde y la presencia creciente de pseudotecios peritecioides maduros a partir del mes de febrero. Los valores mas altos se observaron a partir de abril y mayo, lo cual es coincidente con la mayor abundancia de sintomas de la enfermedad en las sementeras establecidas en estos meses.
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