Contrasting seed moisture sorption behaviour between two species and the implication for seed longevity

Abstract Understanding seed moisture desorption and adsorption isotherms is important for quality maintenance better predicting storage lifespan. Freshly harvested oilseed rape barley seeds were dried then rehydrated twice. Seed equilibrium relative humidity (eRH) content (MC) determined at different levels so that two cycles of could be constructed. In addition, to 30% RH 50% five determine whether they shift the isotherm. Monolayer MC was using Gugenheim-Anderson-de Boer model. Storage experiments conducted equilibrated 30, 40, 50, 60 70% 45°C. Isotherm curves’ shapes similar barley, although spanning a greater range in barley. The hysteresis effect observed when over silica gel <10% RH. However, this only RH, but not seeds. Longevity adsorbing than desorbing given eRH, however, there no significant difference σ (the standard deviation normal distribution deaths time)–MC log–log relationship. relationship shifted on second cycle. conclusion, if lots are stored specific reaching by or can strongly influence their longevity. Also, species low will respond differently subsequent increase which profoundly affect