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Physiological quality of hybrid maize seeds during containerized-dry storage with silica gel

Authors: Oyekale Kehinde

Publication Type: Journal article

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Abstract

Seed storage operations in the tropics would benefit from low input techniques that can maintain seed physiological quality for considerably long periods without investments in cooling. A study was conducted to evaluate seed vigour and estimate seed longevity in maize during dry storage with commercial desiccant (silica gel) at various levels of gel/seed ratios in air-tight containers under ambient tropical temperature. Seed moisture content (MC) was lowest indicating effective drying at 1:1 gel/seed (100 g of seed stored over 100 g of gel) and 1:2.5 gel/seed ratio (100 g of seed stored over 80 g of gel) during 2 trials set up in 2005 and 2006. After 4 months of storage, laboratory seed germination capacity and vigour variables were consistently higher (p<0.05) in seed lots stored at 1:1 and 1:2.5 gel/seed ratios than seed lots stored at 1:20, 1:10 and 0:1 gel/seed ratios in the 2 trials. Probit analysis of seed survival data from controlled deterioration (CD) tests showed that estimates of potential longevity were optimal at 1:2.5 gel/seed ratios in the two experiments. The results indicated the possibility of maintaining seed physiological quality in containerized-dry storage under ambient humid tropical storage conditions. Moreover, the storage system experimented in the study simulated a condition that eliminates labour involved in regenerating or drying silica gel, since silica gel was not changed throughout the storage period. Gel/seed ratios between 1:1 and 1:2.5 are recommended for direct application or in developing technology and equipment for containerized-dry seed storage in the humid tropics.

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Oyekale,K. . (0000). Physiological quality of hybrid maize seeds during containerized-dry storage with silica gel , 0 (), 0-0.

Oyekale,K. . "Physiological quality of hybrid maize seeds during containerized-dry storage with silica gel " 0, no (), (0000): 0-0.

Oyekale,K. and . (0000). Physiological quality of hybrid maize seeds during containerized-dry storage with silica gel , 0 (), pp0-0.

OyekaleK, . Physiological quality of hybrid maize seeds during containerized-dry storage with silica gel . 0000, 0 ():0-0.

Oyekale,Kehinde , . "Physiological quality of hybrid maize seeds during containerized-dry storage with silica gel ", 0 . (0000) : 0-0.

O.Kehinde , "Physiological quality of hybrid maize seeds during containerized-dry storage with silica gel " vol.0, no., pp. 0-0, 0000.

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