Callose Deposits make Clover Seeds Impermeable to Water

The permeability status of the seed from ten genotypes of subterraneanclover, determined by soaking, is shown to be related to callosedeposition in the seed coat. Large amounts of callose were foundin the nutrient (parenchyma) layer of impermeable but not permeableseeds. It is suggested that the nutrient layer controls permeabilityand thus the ease of germination of seeds. Trifolium subterraneum L., clover, seed coat impermeability, callose