Efeito da luminosidade no crescimento inicial, alocação de biomassa e histoquímica foliar de Cochlospermum regium, espécie medicinal do Cerrado.

Effect of luminosity on initial growth, biomass allocation and leaf histochemistry of Cochlospermum regium (Mat. And Schr.) Pilger, medicinal species of the savanna. This study aimed to evaluate the influence of light on the initial growth, biomass allocation and leaf histochemical of Cochlospermum regium (“algodãozinho-do-campo”). The seeds were collected and germinated and the seedlings were placed in full sun and in two sombrites (914 µmol/m2/s and 260 µmol/m2/s). At 30 and 60 days after the start of treatment was measured to shoot height, root length, stem diameter and histochemical analysis of the sheet were made. At 60 days the dry mass of root and shoot were measured. The luminosity did not change any analyzed variables, in the histochemical analysis was observed the presence of compounds with medicinal properties. The production of seedlings of this species was not affected by the luminosities tested.