Qualidade fisiológica de sementes e mudas de Parkia multijuga Benth (Fabaceae).

Abstract

The fava arara tucupi (Parkia multijuga Benth) is a forest species, belonging to the Fabaceae family, characteristic of the Amazon region, is little known, has low reforestation rates, due to the lack of related production system knowledge, the shading and substrates. Their study is important for the implementation of reforestation programs for the perpetuation of the species. The development of methods for rapid evaluation of physiological seed quality can aid in decision making regarding the use or disposal of lots for the conservation and or seedling production, mainly for species whose germination period is too long. The study aims to obtain information on the quality of seeds and seedlings of native tree species that are important for the recovery of degraded areas, mainly due to the renewal of vegetation. The experiment was conducted at the Forest Seed Laboratory of Embrapa Amazônia Oriental, Belém-PA. The evaluation of the quality of the seeds was determined by germination tests and viability. The evaluation of the quality of the seedlings was determined in tests in the nursery. This study showed that the tetrazolium solution possible to evaluate the quality of batches of P. multijuga seeds. As for the plants in the field, it was observed that the emergence of seedlings P. multijuga was not affected by shading levels and substrates. Based on the growth in diameter and dry matter production, it is concluded that the formation of P.multijuga seedlings, requires shading 30% or 50% using the chicken manure substrate being a viable alternative for the production of seedlings this species.