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Revista Árvore

Print version ISSN 0100-6762

Abstract

SOUZA, Ednaldo Bezerra de; PACHECO, Mauro Vasconcelos; MATOS, Valderez Pontes  and  FERREIRA, Rinaldo Luiz Caraciolo. Germination of Adenanthera pavonina L. seeds as a function of different temperatures and substrates. Rev. Árvore [online]. 2007, vol.31, n.3, pp. 437-443. ISSN 0100-6762.  http://dx.doi.org/10.1590/S0100-67622007000300009.

This work studied the germination of A. pavonina seeds in different conditions of temperature regime and substrate. The experiment was arranged in a 6 x 5 factorial, complete randomized design (6 substrates - sowing in and on: coconut fiber, sand and vermiculite; and 5 temperatures: 25, 30, 35, 20-30 and 20-35ºC), with four replications with 25 seeds each. The following parameters were analyzed: germination (%), first germination count (%), index of germination speed, length (cm/seedling) and dry matter weight (mg/seedling). The best results of germination were obtained at 30 and 35ºC in all substrates. Coconut fiber and sand substrates allowed satisfactory germinative performance, proving to be suitable for the evaluation of the physiological quality of A. pavonina seeds.

Keywords : Forest seeds; germination ecophysiology; vigor.

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