Efecto del almacenamiento en la viabilidad, germinación y vigor de semillas de Coffea arabica L.

Contenido principal del artículo

Natalia Flechas-Bejarano
Rubén Medina-Rivera

Resumen

El almacenamiento de semillas de café bajo condiciones idóneas de temperatura y humedad relativa mantiene por largos períodos de tiempo la calidad fisiológica para su propagación. El objetivo de esta investigación fue evaluar el efecto en la viabilidad de la semilla, de tres ambientes con temperatura y humedad relativa contrastantes, durante 14 meses de almacenamiento, mediante: la prueba topográfica con tetracloruro de tetrazolio; la germinación por la emergencia de la radícula en cajas plásticas y por conteo de plántulas en germinador de arena; y el vigor por mediciones morfométricas en plántulas de Coffea arabica L. var Castillo®. Para la viabilidad de la semilla, las categorías de tinción absoluta (A) y sin tinción (E) fueron diferentes, independientemente de los ambientes y del efecto de almacenamiento. La emergencia de la radícula y la germinación señalaron que la condición ambiental  10±2°C; 65±7% HR favorece una mayor proliferación de semillas con radículas emergentes y plántulas (>75%) en  los 400 y 320 días, respectivamente. En cuanto a la medición de las variables morfométricas, sólo la longitud del hipocótilo y de la raíz pivotante mostraron una tendencia descriptiva por tratamiento y mes de almacenamiento. La condición ambiental 10±2°C; 65±7% HR conservó la calidad fisiológica de las semillas para propagación durante cuatro meses.

Detalles del artículo

Biografía del autor/a (VER)

Natalia Flechas-Bejarano, Cenicafé

Asistente de Investigación. Disciplina de Fisiología Vegetal, Centro Nacional de Investigaciones de Café, Cenicafé.

Rubén Medina-Rivera, Cenicafé

Investigador Científico II. Disciplina de Biometría, Centro Nacional de Investigaciones de Café, Cenicafé.

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