Abstract
Bamboo species are an alternative for the composition of forest plantations. However, their potential has not been explored due to the hard time in producing large-scale clonal plants. Thus, the aim this work was to evaluate the in vitro establishment, bud multiplication and ex vitro rooting of Bambusa vulgaris. The first experiment tested different systemic and contact fungicide solutions, based on exposure time, during the establishment phase. Established explants were subjected to evaluation of residual fungicide effect on subcultures during the multiplication and elongation phases. The second experiment evaluated the influence of activated carbon on ex vitro survival and on adventitious rooting. Explant immersion in liquid culture medium added with 1.0 mL of fungicide for 120 hours has favored the in vitro establishment and reduced fungal contamination. On the other hand, it favored the shoot emission of shoots per explant during the multiplication phase. Both rooting induction culture medium and mini-incubator system use were effective in enabling adventitious root formation. The presence of activated carbon in the rooting induction culture medium resulted in a higher clonal plant survival rate.
Highlights
Bamboo species are a perennial, renewable and fast-growing resource that presents high yield per field, low cost and diverse use, besides being considered carbon accumulators (CALEGARI et al, 2007; GUIMARÃES JÚNIOR; NOVACK; BOTARO, 2010)
(a) Control. b) Explants immersed in fungicide for 72 hours. (c) Explants immersed in fungicide in 120 hours (Bars = 1 cm)
The silvicultural and technological potential of bamboo species has not been properly exploited in Brazil due to the hard time producing clonal plants at commercial scale, among other factors
Summary
Bamboo species are a perennial, renewable and fast-growing resource that presents high yield per field, low cost and diverse use, besides being considered carbon accumulators (CALEGARI et al, 2007; GUIMARÃES JÚNIOR; NOVACK; BOTARO, 2010). Given their high regrowth capacity, they do not require constant replanting in explored fields and can be grown in eroded soils (DA MOTA et al, 2017). According to Mendes et al (2010), in homogeneous bamboo plantations present high plant density with low rotation and no replanting, a fact that affects the nutritional aspects of crop fertilization, with emphasis on potassium, which is the most exported nutrient
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