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Open Access High-temperature drying of seeds of wild Oryza species intended for long-term storage

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This article is Open Access under the terms of the Creative Commons CC BY-NC licence.

Freshly harvested seeds of four accessions of different wild Oryza species belonging to the AA genome (Oryza sativa complex) were initially dried at 15% RH and either 15, 30, 45 or 60°C for a week before final drying at 15% RH and 15°C. Subsequent storage experiments at 10.9% moisture content and 45°C showed seed longevity increasing as the initial drying temperature increased up to 45°C. A subsequent decrease in seed longevity was observed for seeds dried at 60°C. Thus, similar to cultivated rice, these results suggest that initial drying of wild Oryza species seeds at 45°C is advantageous for long-term storage compared with drying directly at 15% RH and 15°C.
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Keywords: GENEBANK STORAGE; RICE; SEED CONSERVATION; SEED DRYING; SEED LONGEVITY; WILD ORYZA SPECIES

Document Type: Research Article

Publication date: 01 April 2018

This article was made available online on 01 February 2018 as a Fast Track article with title: "High-temperature drying of seeds of wild Oryza species intended for long-term storage".

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