Resumo

GALLARDO, J et al. Comportamiento en la brotación de las yemas de estacas de Guadua angustifolia Kunth empleadas en la propagación. cultrop [online]. 2008, vol.29, n.1, pp. 17-22. ISSN 0258-5936.

Guadua angustifolia Kunth is a Central American plant, which is very important from the economical and social viewpoint. Stake propagation has not been used in this species, due to the low coefficients of sprouting and explant survival, since stakes from lateral shoots of adult plants are the ones employed for propagation. Thus, the present work was aimed at developing a strategy for bud sprouting under nursery conditions in stakes from shoots of adult plants and growing stems. The effect of stake diameter on bud sprouting was evaluated, comparing stakes with bigger and smaller diameters than one centimeter. The relationship between stake diameter and bud growth dynamics was studied by using stakes with different diameters (1-1.4; 1.5-1.9; 2-2.4; 2.5-3 cm), besides evaluating bud size every week of culture. Buds of Guadua angustifolia sprouted 53.2 % when using stakes with bigger diameters than one centimeter for propagation. During the week 2 of culture, the highest sprouting percentages were recorded, they being significantly superior to the other weeks. By employing stakes with bigger diameters, larger buds with bigger base diameters were reached. During the weeks 3, 4 and 5 of culture, occurred the highest bud growth increments in all treatments studied

Palavras-chave : bamboos; Guadua angustifolia; sprouting; stooling; plant nurseries.

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