Increases in the longevity of desiccation-phase developing rice seeds: response to high-temperature drying depends on harvest moisture content.

ABSTRACT:

Background and aims

Previous studies have suggested that the drying conditions routinely used by genebanks may not be optimal for subsequent seed longevity. The aim of this study was to compare the effect of hot-air drying and low-temperature drying on subsequent seed longevity for 20 diverse rice accessions and to consider how factors related to seed production history might influence the results.

Methods

Seeds of rice, Oryza sativa, were produced according to normal regeneration procedures at IRRI. They were harvested at different times [harvest date and days after anthesis (DAA), once for each accession] and dried either in a drying room (DR; 15 % relative humidity, 15 °C) or in a flat-bed heated-air batch dryer (BD; 45 °C, 8 h d(-1)) for up to six daily cycles followed b

SUBMITTER: Whitehouse KJ 

PROVIDER: S-EPMC4512194 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature