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- Title
PRE-GERMINATION TREATMENTS OF PARICÁ (Schizolobium amazonicum) SEEDS.
- Authors
BARDIVIESSO, Estefânia Martins; BATISTA, Thiago Barbosa; BINOTTI, Flávio Ferreira da Silva; COSTA, Edilson; da SILVA, Tiago Alexandre; Lima LANNA, Natália de Brito; PETRONILIO, Ana Carolina Picinini
- Abstract
Paricá seeds have dormancy and, even after mechanical scarification, these seeds show slow and uneven germination. Pre-germination treatments can be used to increase seed germination performance. Thus, the aimed to evaluate the physiological potential and initial growth of paricá seeds after pre-germination treatments, using different substances as plant regulators and nutrients, in addition to mechanical scarification. The experimental design was completely randomized, in a 2x7 factorial scheme, consisting of the following pre-germination treatments: mechanical scarification (10% and 50% of the seed coat) and seed pre-soaking [control-water, KNO3 0.2%, Ca(NO3)2 0.2%, gibberellin 0.02%, cytokinin 0.02%, and mixture of gibberellin + cytokinin (1:1)] besides a control group without pre-soaking, with four replicates. The study evaluated germination and emergence rates, germination and emergence speed indices, collar diameter, plant height, seedling dry mass, hypocotyl and seedling length, and electrical conductivity. It was observed that pre-soaking the seeds in gibberellin after mechanical scarification at 50% as a pre-germination treatment resulted in seeds with higher vigor expression and greater initial seedling growth.
- Subjects
GERMINATION; SCHIZOLOBIUM; SEED physiology; PLANT growth; PLANT regulators
- Publication
Bioscience Journal, 2020, Vol 36, Issue 4, p1090
- ISSN
1516-3725
- Publication type
Article
- DOI
10.14393/BJ-v36n4a2020-41791