Resumo

ACOSTA, MC; ALCARAZ, ML; SCARAMUZZINO, RL  e  MANFREDA, VT. Physiology of Rhodophiala bifida germination. FAVE. Secc. Cienc. agrar. [online]. 2021, vol.20, n.1, pp.159-173. ISSN 1666-7719.

Our aim is to contribute to the knowledge of the basic physiological characteristics of the germination and perdurability of Rodophiala bifida seeds. The effect of different temperatures, presence / absence of light, two years of harvest and one of storage, on the final percentage of seminal states was evaluated. By adjusting the germination percentage as a function of time, the following were estimated: Maximum Percentage, Average Time and Germination Uniformity. The seeds showed neutral photoblastism, without dormancy or sanitary problems. Between 7 and 28 °C they exceeded 90 % of germination, in pregnancies and with one year of storage (good perdurability); at 33 °C it decreased by 10 % and coincided with the increase in dead and firm white seeds. Germination dynamics adjust to active function. With the Average Times in the range between 7 and 25 ° C, the Optimum Temperature (25 °C), Base (4.83 °C) and Thermal Time (1666 °Ch) were estimated.

Palavras-chave : Rodophiala bifida; Germination; Perdurability.

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