Interaction between an inhibitor present in the seeds of Datura ferox L. and light in the control of germination

摘要: The relation between an inhibitor extracted from seeds of Datura ferox and the photocontrol germination in D. Lactuca sativa var. Grand Rapids was studied. level present changes during incubation, increasing first 24 hr later decreasing. represses effect red light if applied before or simultaneously with treatment. If is after irradiation, much reduced. Extracts also inhibit L. Rapids. inhibition produced by low concentrations extract almost completely reversed 5 min light. An increase concentration produces complete even irradiated seeds. effects prolonged irradiations blue far-red on are similar and, at least case far-red, synergistic. possibility that irradia...