Answers are grounded in this paper and cite their sources.
The permeability status of the seed from ten genotypes of subterranean clover, determined by soaking, is shown to be related to callose deposition in the seed coat. Large amounts of callose were found in the nutrient (parenchyma) layer of impermeable but not permeable seeds. It is suggested that the nutrient layer controls permeability and thus the ease of germination of seeds.
No takes yet. Share an insight, caveat, or question.
Bhalla et al. (1984) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: