01568naa a2200241 a 450000100080000000500110000800800410001902200140006010000180007424500910009226000090018352009450019265000170113765000100115465000120116465000180117665000100119465000170120465000120122165000100123370000190124377300640126211976772020-01-17       1986    bl uuuu     u00u1 u    #d  a0251-09521 aFREIRE, M. S.  aThe efficiency of a range of containers in maintanining seed viability during storage.  c1986  aSeeds of wheat at 6.5% and 13.2% and rice at 7.4% and 11.5% moisture content were stored at: 32°C, 80-90% relative humidity (RH); 22°C, 60-70% RH; and at - 18°C uncontrolled RH. Containers were made of paper, cotton, polyethylene, laminated aluminium foil, glass and metal in 24 combinations. Some flexible materiais were used inside rigid ones. Containers were sealed by various methods. Moisture content, germination of seeds and seedling vigour were assessed at three month intervals over a 2 I month period. The most efficient containers were hermetically sealed laminated aluminium foil packages and metal cans with tight fitting screw caps followed by glass bottles with threaded bakelite caps. Rapid deterioration of seeds occurred in permeable containers, with wheat deteriorating more rapidly than rice. Contrary to predictions, seeds at - 18° C showed evidence of deterioration at 21 months and possible reasons are discussed.  aSeed storage  aSeeds  aStorage  aArmazenamento  aArroz  aOryza Sativa  aSemente  aTrigo1 aMUMFORD, P. M.  tSeed Science and Technologygv. 14, n. 2, p. 371-381, 1986.