
O florescimento da cana-de-açúcar é um processo fisiológico complexo formado por vários estádios de desenvolvimento, e cada estádio tem a sua própria necessidade ambiental e fisiológica. Os fatores externos relacionados com o florescimento são: fotoperíodo, temperatura, umidade e radiação solar, além da fertilidade do solo. Por outro lado, os fatores internos envolvem fitocromo, hormônios, florígeno, ácidos nucleicos, dentre outros. A intensidade do processo de florescimento e as consequências na qualidade da cana-de-açúcar variam com a variedade e com o clima. A redução do volume de caldo é o principal fator no qual o florescimento interfere, resultante do aumento do teor de fibras. Como as demais Poaceae, a cana-de-açúcar floresce, frutifica e morre, garantindo a perpetuação da espécie. Dessa forma, o homem procura interferir na natureza tentando evitar o florescimento da cana-de-açúcar, seja por meio de melhoramento genético ou por meio de reguladores vegetais. Em áreas comerciais de produção de cana-de-açúcar, onde há condições ideais para o florescimento da cultura, é recomendado o uso de variedade com potencial menos florífero. E, quando não é possível esse manejo varietal, o uso de inibidores do florescimento é a melhor alternativa para evitar mais perdas no conteúdo de sacarose.The sugarcane flowering is a complex physiological process that consists of several stages of development, each stage has its physiological and environmental requisition. The external factors related to flowering are: photoperiod, temperature, humidity, solar radiation in addition to soil fertility. Already the internal factors involved are: phytochrome, hormones, florigene, nucleic acids, among others. The intensity of the flowering and the consequences on the quality of sugarcane vary with the variety and the climate. The reduction of the sugarcane juice is the main factor which affected by the flowering, resulting from due to the increased fiber content. As other Poaceae, the sugarcane flowers, fruit and dies, ensuring the perpetuation of the species. Thus, the man tries to interfere in nature, trying to prevent the flowering sugarcane, either through breeding or through plant growth regulators. In areas of sugarcane commercial production, where there are ideal conditions for the flowering culture, it is recommended the se of variety with lower potential of flowering. And when this varietal management is more difficult, the use of inhibitors of flowering is the best alternative to avoid more losses of sucrose content.
flowering induction, Saccharum spp., indução floral, S, Agriculture (General), plant growth regulators, Agriculture, reguladores vegetais, S1-972
flowering induction, Saccharum spp., indução floral, S, Agriculture (General), plant growth regulators, Agriculture, reguladores vegetais, S1-972
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