Nematodos fitoparásitos asociados al cultivo de papaya (Carica papaya L.) en Colima, México

Abstract


 
 
 Este estudio tuvo como objetivo detectar e identificar los géneros de nematodos fitoparásitos asociados al cultivo de papaya (Carica papaya L.) en los municipios de Tecomán y Colima, Colima. Se seleccionaron diez huertos, de siete ranchos en los que se colectaron muestras de raíces y suelo rizosférico; en cada muestra se cuantificó e identificaron las poblaciones de los fitonematodos. Para la identificación específica de Meloidogyne, se analizaron cortes perineales de las hembras y se confirmó por reacción en cadena de la polimerasa (PCR). Los géneros de fitonematodos detectados e identificados fueron: Aphelenchus, Ditylenchus, Helicotylenchus, Paratylenchus, Pratylenchus, Rotylenchulus, Rotylenchus, Trophurus, Tylenchorrhynchus, Tylenchus, y Meloidogyne, con la especie M. incognita. Los resultados permiten el reporte por primera vez de M. incognita, asociado al cultivo de papaya en Colima, México.
 
 

Metarhizium carneum Formulations: A Promising New Biological Control to Be Incorporated in the Integrated Management of Meloidogyne enterolobii on Tomato Plants

“…In Mexico, this nematode causes significant yield losses in tomato and other vegetables crops due to its high pathogenicity, which leads to important plant mortality before completing the crop cycle. Even tomato cultivars with the Mi-1 resistance gene, which confers resistance to M. javanica, M. arenaria and M. incognita, are susceptible to M. enterolobii [6,7]. Therefore, in this work, the research focused on the development of integrated management strategies for this emerging species using biological and chemical controls.…”

“…Meloidogyne enterolobii is considered an emerging nematode species of major concern due to its worldwide distribution and its ability to reproduce on various crops, causing severe damage [4]. This nematode was recorded for the first time in Mexico parasitizing watermelon Plants 2023, 12, 3431 2 of 14 plants in the state of Veracruz [5], and later it was registered in tomato cultivated fields in Sinaloa, the main vegetable-producing state, causing severe damage to tomato plants, even those carrying the Mi gene which provides resistance to M. incognita, M. javanica and M. arenaria [6,7]. This is of particular concern because Mexico is the tenth largest tomato producer at four million tons per year, and it is also the main exporter worldwide [8,9].…”