Article

Acondicionamiento osmótico de semillas de tomate de cáscara

Agricultura Técnica en México, ISSN 0568-2517, Vol. 33, Nº. 2, 2007, pags. 115-123 01/2007;
Source: OAI

ABSTRACT Con el objetivo de evaluar el efecto del acondicionamiento osmótico sobre la calidad fi siológica de semillas de tomate de cáscara, se realizó un experimento en el Laboratorio de Análisis de Semillas del Colegio de Postgraduados en Montecillo, Estado de México, México, en el período septiembre de 2004 a mayo de 2005. La semilla de tomate de cáscara cv. Rendidora fue osmoacondicionada con KNO3, KCl y polietilen glicol-8000 a -5, -10, -15 y -20 atm durante 48, 72 y 96 h y posteriormente se almacenó durante 0, 7, 90 y 180 días. Los parámetros evaluados fueron: porciento de germinación, plántulas anormales, semillas latentes y semillas muertas, tiempo para alcanzar 50% de germinación y peso seco de plántula. El efecto del acondicionamiento osmótico sobre las variables de germinación varió en función del agente osmótico y su potencial, y la duración del tratamiento. El almacenamiento favoreció el porciento de germinación y redujo el de semillas latentes. El acondicionamiento osmótico con KCl a -15 atm durante 48 h o con KNO3 a -20 atm durante 48 h, mejoraron la calidad fi siológica de la semilla de tomate de cáscara

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