Behaviour of bud sprouting in Guadua angustifolia Kunth stakes used for propagation
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Abstract
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.
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