Indução floral de Beta vulgaris L. em condições do Distrito Federal

AUTOR(ES)

Fernando Almeida Costa

DATA DE PUBLICAÇÃO

2010

RESUMO

The demand for beet seeds in Brazil is growing every year, however, the dependence on imported seeds of this vegetable is almost total. Low temperatures associated with long photoperiods promote flowering and seed production, but this conditions are rare in most of Brazil. The artificial vernalization of roots is a good technique for seed production of various vegetables, including beets. The identification of germplasm with less photoperiodic and chilling requirement and more responsive to artificial vernalization is a priority researchs action. The floral induction via artificial vernalization was assessed by exposure for 75 days at 5 C of 95 accessions of Beta vulgaris L.. In another study, it was evaluated different durations (0, 3, 60 and 90 days) of artificial vernalization at 5C of a single genotype (cultivar Itapuã 202). The results showed the relationship between place of origin of the genotype and its requirement for photoperiodic induction of flowering, as well as the effectiveness of different durations of artificial vernalization. It was found not economically feasible for floral induction via artificial vernalization genotype Itapuã 202 in conditions of Distrito Federal, Brazil. Perceives the need to increase the participation of genotypes from the Middle East by the good response to artificial vernalization in conditions of Distrito Federal.

ASSUNTO(S)

vernalization beta vulgaris l. vernalização indução floral agronomia beta vulgaris floral induction

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