ResumenEn la presente investigación se logró autenticar la capacidad nodulativa y evaluar la frecuencia de la eficiencia en la nodulación de 50 cultivos aislados de nódulos radiculares de arveja, colectados de los Departamentos: La Libertad, Lambayeque, Cajamarca y Lima. Para lo cual se inoculó 1mL de suspensión del cultivo aislado (1,2x10 9 cel / mL) en plántulas de Pisum sativum var. Selección Junín, manteniéndolas bajo condiciones de humedad relativa, 50-70% y temperatura/fotoperiodo, 28 °C -24 °C / 14 h -10 h (luz-oscuridad). A los 25 días post-inoculación se obtuvo que el 40% nodularon a la planta huésped. Para determinar la frecuencia en la eficiencia de nodulación, se tuvo en cuenta los parámetros de velocidad de nodulación (DN en mm) y el porcentaje de raíces noduladas (PRN%); el análisis Correlacional de Pearson al 5% de significancia, el MANOVA y el estadístico DHS de Tukey, permitieron establecer los rangos (alta, intermedia y baja) para DN y PRN% por cada cultivo, resultando que solo el 10% de los cultivos evaluados (Ra 218-01 y Ra 212-01) presentaron alta eficiencia en la nodulación, ya que obtuvieron alta DN y alto PRN%.Palabras clave: Rhizobium, Pisum sativum, autenticación, eficiencia en la nodulación. AbstractIn the present investigation was able to authenticate the ability to nodulate and to evaluate the frequency of nodulation efficiency of 50 isolate strains of pea nodules, collected from the departments: La Libertad, Lambayeque, Cajamarca and Lima. Which was inoculated to 1 mL of culture suspension alone (1.2x10 9 cel / mL) in seedlings of Pisum sativum var. Selection Junín, keeping them under conditions of relative humidity, 50-70% and temperature / photoperiod, 28 °C -24 °C / 14 h -10 h (light-dark). At 25 days post-inoculation was obtained that 40% nodulated the host plant. To determine the frequency of nodulation efficiency, we took into account the parameters of speed of nodulation (DN in mm) and the percentage of roots nodulated (PRN%); pearson correlational analysis of the 5% significance, MANOVA and Tukey statistical DHS, allowed to establish the ranges (high, medium and low) for DN and PRN% for each crop, resulting in only 10% of all crops (Ra Ra 218-01 and 212-01) showed high efficiency in nodulation, as DN were high and high PRN%.
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