Quebra de dormência de sementes de Chamaecrista flexuosa (L.) Greene visando a restauração ecológica do Cerrado
DOI:
https://doi.org/10.5216/rbn.v4i1.4657Keywords:
Cerrado, espécie arbustiva, Leguminosae, nucleação, teste de germinaçãoAbstract
Brazilian Cerrado is considered a biome of high importance for conservation due to its high biological diversity and the high anthropic pressure it has been submitted to. The recuperation of this biome represents a challenge to initiate a process of succession as similar as possible to the natural processes, including all forms of life. Chamaecrista flexuosa (L.) Greene (canela-de-ema), Leguminosae- Caesalpinioideae, a triannual ruderal subshrub, presents fast growth and precocious and abundant fruition. The introduction of C. flexuosa in dense nuclei possesses high potential of soil recovery and attraction of pollinators. Herbaceous-shrubby plants, components of the first seral phases, are important to combat exotic grass invaders and to turn the environment more suitable for the arrival of more demanding species. To break C. flexuosa seed dormancy, an entirely randomized test of seedling emergence was carried out, with eight repetitions and 25 seeds per treatment. Seed dormancy was broken by immersion in water at 80oC for 5 seconds, resulting in 73.5% of emergence.
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