Heredabilidad de la resistencia de la roña del manzano Venturia inaequalis (CKE) Wint. al benomyl
DOI:
https://doi.org/10.59741/agraria.v10i1.200Keywords:
Venturia inaequalis, Benzimidazole resistance, Resistance to fungicidesAbstract
The objective of this research was to study the inheritance of resistance to benomyl in V. inaequalis, the apple scab pathogen. Progeny from crosses among a resistant (104) and three susceptible strains (101, 147 and 163) where grown in malta agar with 0.5 and 10 ppm of benomyl to evaluate their suscepti- bility to the fungicide. Pseudothecia were obtained on apple leaf discks placed on water agar plate, inoculated with two V. inaequalis strains,incubated for 21 days at 18-20° C and then transfered to 8° C. Using this methodology, crosses produced pseudothecia within 140 days. Inheritance of resistance to benomyl based on 160 monosporic isolates was monogenic as determined by the 1:1 segregation rate of this trait in examined progeny.
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