En el sur de Sicilia, se observaron daños importantes en una plantación joven de almendro naturalmente infectada por el nematodo nodulador Meloidogyne incognita . El parasitismo del nematodo se vió favorecido por la susceptibilidad del portainjerto franco y el suelo arenoso en el que se desarrollaron las plantas. En la raíz principal y raíces laterales se observaron numerosas agallas grandes, que causaron una severa reducción de la funcionalidad del sistema radical. El estudio histopatológico reveló la presencia de células gigantes en el cilindro central, caracterizadas por presentar citoplasma denso, núcleos heterocromáticos hipertróficos y pared celular engrosada. El establecimiento de los sitios de alimentación provocó interrupciones, reducciones y alteraciones en la continuidad del tejido vascular. La producción se redujo cuantitativa y cualitativamente en las plantas infectadas.
Severe root damage induced by a population of Meloidogyne incognita was observed in a naturally infested almond orchard in southern Sicily. The nematode attack was favoured by the susceptibility of the unselected rootstocks and the sandy soil. Several large galls were visible on principal and lateral roots, inducing a severe reduction of the radical system functionality. The giant cells observed into the vascular cylinder, were characterized by a dense cytoplasm, hypertrophy, heterochromatic nuclei, and thicker cell walls. The feeding sites caused interruptions, reductions and alterations in the continuity of the vascular tissues. In parasitized plants the production of almond nuts was lower both in quantity and quality.
Alteraciones histopathologicas causadas por Meloidogyne incognita en almendro (Prunus amygdalus Batsch).
Rosso L;Leonetti P;Ciancio A
2004
Abstract
Severe root damage induced by a population of Meloidogyne incognita was observed in a naturally infested almond orchard in southern Sicily. The nematode attack was favoured by the susceptibility of the unselected rootstocks and the sandy soil. Several large galls were visible on principal and lateral roots, inducing a severe reduction of the radical system functionality. The giant cells observed into the vascular cylinder, were characterized by a dense cytoplasm, hypertrophy, heterochromatic nuclei, and thicker cell walls. The feeding sites caused interruptions, reductions and alterations in the continuity of the vascular tissues. In parasitized plants the production of almond nuts was lower both in quantity and quality.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


