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Abstract
Se realizó un experimento de campo en un diseño de bloques completos al azar con cuatro niveles de azufre, S0, S1, S2 y S3, incluyendo 0, 12, 24 y 36 Kg ha-1 (respectivamente) junto con 115Kg N ha-1, para evaluar el rendimiento económico de una variedad de canola (Hyola401) en Abandankash en el distrito central del condado de Sari en el norte de Irán. Se registraron parámetros tales como actividad de la nitrato-reductasa de la hoja, nitrato de raíz, azúcares de hoja y raíz, peroxidasa de raíz, catalasa de hoja y rendimiento de semilla. Los resultados del análisis de varianza revelaron diferencias altamente significativas entre los caracteres para la mayoría de los rasgos como nitrato de hojas y raíces, azúcares de hojas y raíces, peroxidasa de raíces, catalasa de hojas y rendimiento de semillas. Debido a una correlación positiva significativa entre la nitrato- reductasa de la raíz y el rendimiento de la semilla, el aumento de esta enzima en la raíz mediante la aplicación de azufre tiene un efecto acelerador en el rendimiento de la semilla de colza. Una correlación positiva altamente significativa determinada entre el contenido de azúcar en la hoja y el rendimiento de la semilla (0.75**) indica que los niveles crecientes de azufre tuvieron un efecto directo sobre el contenido de azúcar en la hoja, lo que tuvo un efecto acelerador sobre el peso del rendimiento del grano. La aplicación de azufre aumentó significativamente el rendimiento de la semilla sobre el control (nivel de S0) y varió de 2744 a 3215 kg ha-1 en S0 y S3, respectivamente.
A field experiment was conducted in a randomized complete block design with four sulfur levels, S0, S1, S2 and S3, including 0, 12, 24 and 36 kg ha-1 (respectively) along with 115 kg N ha-1, to evaluate the economic yield of the rapeseed variety (Hyola401) in Abandankash in the Central District of Sari County in Northern Iran. Parameters such as leaf nitrate reductase, root nitrate, leaf and root sugars, root peroxidase, leaf catalase, as well as seed yield were recorded. The results of the analysis of variance revealed that there were highly significant differences between characters for the majority of the traits such as leaf and root nitrate, leaf and root sugars, root peroxidase, leaf catalase, and seed yield. Due to significant positive correlations between root nitrate reductase and seed yield, increasing this enzyme in roots by sulfur application would have an accelerating effect on rapeseed seed yield. A highly significant positive correlation determined between leaf sugar content and seed yield (0.75**) indicated that increasing levels of sulfur had a direct effect on leaf sugar content, which had an accelerating effect on the weight of kernel yield. Sulfur application significantly increased seed yield compared to the control (S0 level), and it ranged from 2744 to 3215 kg ha-1 in S0 and S3.
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