Abstract
Abscisic acid is a potent inhibitor of seed germination and seedling growth of rice. However, the abscisic acid inhibition is not permanent and disappeared with time. Abscisic acid-mediated inhibition of germination and coleoptile growth was successfully counteracted by both kinetin and gibberellic acid. Both kinetin and gibberellic acid were nearly equally effective and the interaction between abscisic acid and cytokinin is similar to that between abscisic acid and gibberellic acid. Only in radicle elongation the interaction between abscisic acid and kinetin is different from that between abscisic acid and gibberellic acid. Indole-3-acetic acid has no significant effect on the reversal of abscisic acid inhibition of seed germination and seedling growth. When kinetin and gibberellic acid were used together the reversal of abscisic acid-mediated inhibition is more effective than when either is used alone. Indole-3-acetic acid has no effect also when used with either kinetin or gibberellic acid or a combination of both hormones. It is concluded that the mechanism of hormonal regulation may be different in themonocotyledonous and dicotyledonous seeds.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
