Estudio del déficit hídrico y microorganismos beneficiosos sobre la calidad del aceite y las características agronómicas de la canola (Brassica napus L.)

Autores/as

DOI:

https://doi.org/10.3989/gya.0572191

Palabras clave:

Ácido graso insaturado, Colza, Rendimiento de aceite, Sequía, Simbiosis micorrízica

Resumen


El estrés por déficit hídrico es uno de los factores limitantes más importantes que afectan negativamente al crecimiento de las plantas y al rendimiento. Se sabe que algunas bacterias de la rizosfera promueven el crecimiento de las plantas en condiciones estresantes. Para estudiar el crecimiento de la canola, el rendimiento y los componentes del rendimiento, a la colonización de la raíz por dos especies de hongos micorrícicos, se realizó un experimento de campo de dos años en la granja de investigación de la Universidad de Zanjan. Las principales condiciones de la parcela fueron el riego al 85% (S1), 70% (S2) y 55% (S3) de la capacidad de campo, que se definió como sin estrés, estrés leve y severo. Los tratamientos de la subparcela incluyeron tres niveles de inoculación micorrízica: no inoculación (control), G. Mosseae y G. intrara­dices. Los resultados mostraron que, independientemente del estrés por déficit hídrico, las plantas colonizadas producían más biomasa, semillas y rendimiento de aceite que las plantas no inoculadas. El estrés por déficit hídrico reduce el RWC y el porcentaje de semillas oleaginosas, aunque la micorriza mejoró estos rasgos. La existencia de déficit hídrico disminuyó notablemente el contenido de ácido linoleico de la semilla en contraste, aumentaron los ácidos esteárico, oleico, araquídico y linolénico en las semillas de canola. La presencia de bac­terias aumentó el porcentaje de aceite de semilla, el contenido de oleico y linoleico. Sin embargo, disminuye el araquídico particularmente cuando las plantas fueron sometidas a estrés de déficit de agua.

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Publicado

2020-09-15

Cómo citar

1.
Keshavarz H. Estudio del déficit hídrico y microorganismos beneficiosos sobre la calidad del aceite y las características agronómicas de la canola (Brassica napus L.). Grasas aceites [Internet]. 15 de septiembre de 2020 [citado 28 de julio de 2026];71(3):e373. Disponible en: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1840

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Investigación