Identificación de genotipos de caupí con alta capacidad para fijar N2 a baja disponibilidad de P empleando dos medios de cultivo para el crecimiento de las plantas.

Abstract

En el presente trabajo se compararon los resultados alcanzados durante la identificación de genotipos de caupí (Vigna unguiculata l, Walp) con alta capacidad para fijar N2 del aire a baja disponibilidad de P, en el que las plantas se cultivaron en solución nutritiva y en macetas con suelo y se evaluaron 30 variables fisiológicas. Los resultados mostraron que aun cuando las plantas cultivadas en solución mostraron los valores más altos asociados con la nodulación; pero los más bajos en relación con el crecimiento foliar, comparadas con las cultivadas en suelo, los genotipos con más altos valores de N2 fijado del aire en el primer medio de cultivo también lo fueron cuando las plantas se cultivaron en suelo, mostrando que a pesar de las diferencias en el comportamiento de las plantas los resultados que se alcanzan en los dos medios de cultivo son comparables. In the present work, the results obtained during the identification of cowpea genotypes (Vigna unguiculata I, Walp) with high capacity to fix N2 of the air at low availability of P, in which the plants were cultivated in nutrient solution and in pots were compared. with soil and 30 physiological variables were evaluated. The results showed that even when plants grown in solution showed the highest values associated with nodulation; but the lowest in relation to leaf growth, compared to those grown in soil, genotypes with higher values of N2 fixed air in the first culture medium were also when the plants were grown in soil, showing that despite of the differences in the behavior of the plants the results that are reached in the two culture media are comparable. In the present work, the results obtained during the identification of cowpea genotypes (Vigna unguiculata I, Walp) with high capacity to fix N2 of the air at low availability of P, in which the plants were cultivated in nutrient solution and in pots were compared. with soil and 30 physiological variables were evaluated. The results showed that even when plants grown in solution showed the highest values ​​associated with nodulation; but the lowest in relation to leaf growth, compared to those grown in soil, genotypes with higher values ​​of N2 fixed air in the first culture medium were also when the plants were grown in soil, showing that despite of the differences in the behavior of the plants the results that are reached in the two culture media are comparable. In the present work, the results obtained during the identification of cowpea genotypes (Vigna unguiculata I, Walp) with high capacity to fix N2 of the air at low availability of P, in which the plants were cultivated in nutrient solution and in pots were compared . with soil and 30 physiological variables were evaluated. The results showed that even when plants grown in solution showed the highest values ​​associated with nodulation; But the lowest in relation to leaf growth, in which the values ​​of N2 were fixed in the soil, were higher in the soil, they were in the soil plants the results that are reached in the two culture media are comparable. (Traducción automática)