Andréia Rodrigues Ramos
Abstract:
The knowledge of physiological quality of black mucuna seeds and their life cycle are important tools to establish sugarcane management strategies. In order to meet these demands, two experiments were carried out, installed in 2013/14. The first experiment evaluated the influence of five sowing dates on the productive potential of the species, identifying the time required for the different developmental stages. In this proposal, the number of days for flowering, fruit dehiscence, number of pods per racemus, number of seeds per pod, seed productivity, mass of one thousand seeds and plant life cycle are evaluated. In conclusion, black mucuna is responsive to the photoperiod, as it presented a shortening in the plant life cycle as the sowing was postponed. It was also found that the sowing season interferes with the seed production, decreasing it as it progresses to the autumn season. The second experiment aimed to investigate the germination potential of immature, mature and mature black mucuna seeds, as well as the initial performance of black mucuna seedlings cultivated in five sowing dates. The work was carried out in 2014 in two stages, that is, in the seed technology laboratory and in a greenhouse. The first stage was performed with black mucuna seeds in three situations (immature, mature and mature seeds) and the second stage with black mucuna seeds from cultivation in five sowing dates. For both situations, a standard germination and pot emergence test was performed. In conclusion, the freshly harvested mature seeds have high germination capacity and the seeds from five growing seasons, those sown in November and December obtained a high percentage of emergence and emergence.
