Abstract
Abstract: This study aimed to evaluate the effect of maturation fruit and drying temperatures stages on oil content and the physiological performance of crambe seeds. Randomized blocks were the experimental design, with four replications. Harvests occurred when the plants reached 20, 40, 60, 80 and 100% brown color fruits. After harvest, seeds were dried at different temperatures (natural and artificial air at 30, 45 and 60 °C). The seeds were evaluated for the weight of a thousand seeds, productivity, oil content, germination and vigor (count of the first germination and seedling emergence). Crambe seeds, FMS Brilhante cultivar, reach the maximum oil content with harvests made from 70% of total brown color fruits. Drying temperatures do not affect the oil content of the seeds. Harvesting crambe seed aiming at the highest physiological quality should occur when the plants have between 75 and 85% brown fruits. Artificial drying at 30 and 45 °C can be recommended for crambe seeds, favoring the production of quality seeds.
Highlights
With the production and use stimulus of biodiesel, crambe is one of the best options for supplying raw material for the sector due to its cultivation adaptability in tropical and subtropical climate and the high oil content in the seeds. Colodetti et al (2012) cited the importance of crambe in the production of biodiesel, with most of the oils used for this purpose coming from annual crops, mainly crops with spring and summer cycles, lacking options at other seasons that allow the continuity of production of biodiesel and use in industry
This study aimed to evaluate the effect of maturation and drying temperatures stages on oil content and the physiological and physical features of crambe seeds
The values increased until reaching the maximum weight of one thousand seeds (7.38 g), with an estimated harvest of 72.62% of brown color fruits (Figure 1)
Summary
With the production and use stimulus of biodiesel, crambe is one of the best options for supplying raw material for the sector due to its cultivation adaptability in tropical and subtropical climate and the high oil content in the seeds. Colodetti et al (2012) cited the importance of crambe in the production of biodiesel, with most of the oils used for this purpose coming from annual crops, mainly crops with spring and summer cycles, lacking options at other seasons that allow the continuity of production of biodiesel and use in industry. From the physiological maturity to the time of its use in the sowing, the seeds are subject to quality loss due to the biochemical and physiological changes (Garcia et al, 2004), often due to stresses during these steps. It to know the process of development and maturation of the seeds is important to establish the best harvest time, when the seeds show the maximum germination and vigor. It is interesting to know other parameters that allow the detection of physiological maturity, correlating it with morphological characteristics of the plant, fruits and /or seeds
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