Slow Release of GA₃ Hormone from Polymer Coating Overcomes Seed Dormancy and Improves Germination.

ABSTRACT: Seed dormancy often hinders direct seeding efforts that are attempting to restore degraded landscapes. Gibberellic acid (GA₃) can be applied to physiologically dormant seeds to induce germination, but this hormone is rarely effective, as it can degrade or be leached from the seed. We tested different polymer matrixes (polylactic acid, polyvinylpyrrolidone, and ethylcellulose) to apply and slowly release GA₃ to the seed. These polymers were tested as seed coatings in either a powder, liquid, or a combination of powder and liquid forms. We found that a liquid ethylcellulose/GA₃ coating generally outperformed the other polymers and applications methods using our test species Penstemon palmeri. With this top-performing treatment, seed germination was 3.0

SUBMITTER: Larson AJS 

PROVIDER: S-EPMC10748187 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature