Resistencia a Anthonomus eugenii¹ en Poblaciones Criollas y Silvestres de Chile de México | Resistance of Mexican Landrace and Wild Pepper Populations to Anthonomus eugenii1
2021
Rubio-Aragón, Walter Arturo | López-Orona, Carlos Alfonso | López-Meza, Miguel | Avendaño-Meza, Fabian | Félix-Camacho, Silvia Alicia | López-Urquídez, Guadalupe Alfonso | Retes-Manjarrez, Jesús Enrique
The number of dead insects, feeding punctures, and emerged insects of Anthonomus eugenii in 13 wild populations, 10 landraces, and two commercial cultivars of pepper (Capsicum annuum) collected in Mexico, were studied in controlled conditions, as was the relationship of these resistance parameters with morphological traits of fruits and length, width, and thickness of the wall. Wild and landrace populations had significantly greater number of dead insects, fewer feeding punctures, and fewer emerged insects compared to the commercial cultivars, indicating that these populations possess genes for resistance against the insect. Ten populations of wild pepper and three landraces showed high resistance and two wild populations and one landrace had intermediate resistance because they had significantly greater number of dead insects, fewer feeding punctures, and fewer emerged insects of A. eugenii, compared to the other populations and commercial cultivars that were very susceptible because they were severely affected by the insect. The results indicated the populations have mechanisms of antibiosis resistance to A. eugenii. These populations of pepper with different levels of resistance could be used to produce pepper cultivars resistant to A. eugenii.
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