enraizamento de estacas herbáceas de guaranazeiro em diferentes substratos survival rate of guarana herbaceous cuttings in different substrates

Clicks: 285
ID: 133680
2007
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Abstract
A utilização de sementes na propagação do guaranazeiro propicia alta variabilidade na produtividade e suscetibilidade a doenças, por isto, no Amazonas, recomenda-se a propagação do guaranazeiro por meio do enraizamento de estacas herbáceas de materiais selecionados. Objetivou-se com este trabalho, avaliar o enraizamento, em tubetes, de estacas herbáceas de doze clones de guaranazeiro submetidas a três diferentes substratos. Os clones avaliados foram o BRS 300, BRS 871, BRS 372, BRS 648, BRS 189, BRS 505, BRS 610, BRS 612, BRS 850, BRS 882, BRS 608, BRS 611. Os substratos testados foram uma mistura com base em volume de 50 % de solo + 50 % de esterco de galinha (v/v); 50 % de esterco de galinha + 50 % de carvão moído passado em peneira de 10 mm (v/v) e substrato comercial para hortaliças (Plantmax®). O substrato comercial e o esterco de galinha + carvão proporcionaram a maior porcentagem de enraizamento das estacas. O clone BRS Amazonas obteve o maior percentual de enraizamento (88,2 %), enquanto o clone BRS 372, o menor (15 %).
The propagation of the guarana plants using seeds is nowadays not recommended because the high variability in the productivity and susceptibility to diseases. The cuttings propagation of a select guarana plant clones is recommended for Amazonas State. The objective of this study was to evaluate the survival rate of cuttings of twelve clones of guaraná in three substrates with three replicates. The evaluated clones were: BRS 300, BRS 871, BRS 372, BRS 648, BRS 189, BRS 505, BRS 610, BRS 612, BRS 850, BRS 882, BRS 608, BRS 611. The growing media tested were 50% of soil + 50% of chicken manure (v/v); 50% chicken manure + 50% sieved powdered charcoal (v/v) and a comercial growing media for vegetables (Plantmax®). The comercial growing media and the misture of chicken manure + sieved powdered charcoal substrate produced the higher cuttings survival rate. The clone BRS Amazonas showed the highest percentage of survival (88.2%) and clone BRS 372 the lowest (15%).
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Authors ;Murilo Rodrigues de Arruda;José Clério Rezende Pereira;Adônis Moreira;Wenceslau Geraldes Teixeira
Journal information and software technology
Year 2007
DOI
10.1590/S1413-70542007000100035
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542007000100035
Keywords
charcoal

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