Mode of Action of Gibberellic Acid and Light on Lettuce Seed Germination 12
AUTOR(ES)
Lewak, Stanislaw
RESUMO
The seeds of lettuce (Lactuca sativa L. cv. Grand Rapids) germinate in darkness at 25 C when treated by gibberellic acid (GA3) for 1 hour following 2 hours of imbibition. The time of GA3 application influences the rate and the final percentage of seeds that germinate. In contrast, red light illumination given at different times affects only the rate and not the final germination percentage. The early process(es) of germination initiated by GA3 or light treatment can be arrested by subjecting the treated seeds to a nongerminative temperature of 35 C. The results suggest differences in the mode of action of light and GA3 during germination. They indicate that different kinds of processes are involved in the biochemical control of germination.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=542666Documentos Relacionados
- Action of Gibberellic Acid on Lettuce Seed Germination 12
- Lettuce Seed Germination: Modulation of Pregermination Protein Synthesis by Gibberellic Acid, Abscisic Acid, and Cytokinin 1
- Does Gibberellic Acid Stimulate Seed Germination via Amylase Synthesis? 12
- Actions of Gibberellic and Abscisic Acids on Lettuce Seed Germination Without Actions on Nuclear DNA Synthesis 1
- Promotion of Lettuce Seed Germination by Gibberellin 12