Abstract
Abstract Vernalization, natural or artificial, is a physiological requirement of some plants to meet the need for low temperatures for its complete development to occur. The objective of this article is to describe a protocol of transforming a domestic refrigerator into a BOD (Biochemical Oxygen Demand) prototype aimed at vernalizing propagating materials statice crop. The first step is to install a temperature controller to maintain a constant temperature inside the refrigerator (10 °C). Thinking of seedling vernalization, it is still necessary to install a system of lights inside the refrigerator. The control of the time that the lights remain on inside the prototype is carried out by installing a Timer adjusted so that the lights remained on, uninterruptedly, for 10 hours. To test the effective ness of the prototype, an on-farm experiment was carried out with the statice (Limonium sinuatum L.) crop at 5 locations in Rio Grande do Sul, Brazil. The seedlings were vernalized at an internal temperature of 10 °C and photoperiod of 10 hours for 3 weeks. The duration of this experiment was 8 months and at the end of this observed that statice plants were correctly vernalized because the plants emitted flower stems and showed satisfactory development throughout the growing cycle. Therefore, that the adaptation of a domestic refrigerator as a BOD economically viable and easy mounting prototype is possible. Being an excellent alternative to small producers.
Highlights
Vernalization is a physiological process required by some species for flowering to occur through exposure to low, non-freezing temperatures
The plants receive the necessary cold during the vegetative phase, which occurs in the winter months, and bloom in the spring months
Statice seedlings were transplanted to the field in summer (February), when temperatures are high and the photoperiod is long
Summary
Vernalization is a physiological process required by some species for flowering to occur through exposure to low, non-freezing temperatures. In regions with low air temperature at specific times (winter months), the requirement for vernalization is met naturally in the environment, as is the case in subtropical regions in southern Brazil (Parry, 2019). In this case, the plants receive the necessary cold during the vegetative phase, which occurs in the winter months (period with vernalizing temperatures), and bloom in the spring months. The plants receive the necessary cold during the vegetative phase, which occurs in the winter months (period with vernalizing temperatures), and bloom in the spring months In these regions, the production of these species is only possible once a year
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