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Efecto del almacenamiento en la viabilidad, germinación y vigor de semillas de Coffea arabica L.
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incubación
humedad relativa
temperatura
plántulas
almacenamiento
semilla
café
Tetrazolium
incubation
relative humidity
temperature
seedlings
storage
seed
coffee
Tetrazólio
Tetrazólio
incubação
umidade relativa do ar
temperatura
armazenamento
semente
café
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Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-SinDerivadas 4.0.
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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.
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Referencias (VER)
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