INFLUENCE OF KCL AND CACl2 PRETREATMENTS DURING IMBIBITION UPON PEA SEED VIGOUR AND METABOLISM
A 50 mM KCl or 25 mM CaCl2 pretreatment (12 h at 4°C), during seed imbibition, increases pea seed vigour in a 100 mM NaCl medium. Changes in ion transport and in the pool of soluble hydrolytic enzymes, due to these pretreatments, are observed in cotyledons excised from embryo axis and then incubated under aseptic conditions in a sterilized 100 mM NaCl solution. In 72 hour-old-seedlings, KCl or CaCl2 pretreatment trigger a regulative mechanism upon the nutrient mobilization controled by the axis. Improvement of seed vigour in saline media, further to KCl or CaCl2 pretreatment, appears a consequence of indissociable effects from cellular K/Na and Ca/Na ratios and from the regulation of axis control upon the seed storage compound mobilization.
Guerrier, G. and Pinel, P. (1989). INFLUENCE OF KCL AND CACl2 PRETREATMENTS DURING IMBIBITION UPON PEA SEED VIGOUR AND METABOLISM. Acta Hortic. 253, 217-224