English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

EnglishThe objective of the research was to evaluate cytokinin concentrations and agricultural residues as physical structuring agents of the culture medium in the in vitro propagation of highbush blueberry (Vaccinium corymbosum ‘Duke’). To that end, three different concentrations of 2-isopentenyladenine (2iP) (0, 5, and 10 mg L-1)in woody plant medium (WPM) and five structuring agents (in natura rice husks, carbonized rice husks, coconut fiber, S-10 Beifort®, and agar)were tested. After 60days of culture, the following parameters were evaluated: survival (%),sprout and shoot lengths (cm),propagation rate, number of sprouts, and shoot dry mass (g). The substrates used as structuring agents were analyzed in terms of pH and electrical conductivity. The in natura rice husk, S-10 Beifort®, and carbonized rice husk did not differ from the agar in terms of the sprout length. The shoots were longer (1.64 cm) in cultures within natura rice husk than in other treatments. In the absence of 2iP, S-10 Beifort® resulted in the highest propagation rate (2.97). Concerning the number of sprouts, S-10 Beifort®, in natura rice husks, and carbonized rice husks did not differ from agar. However, when the regulator was added, the agar performed better in comparison to the other residues. Thus, in natura rice husks, carbonized rice husks, and S-10 Beifort®are potential physical structuring agents of the culture medium that can be used without 2iP. portuguesO objetivo deste trabalho foi avaliar concentracoes de citocinina e residuos agricolas como agentes fisicos de estruturacao do meio na multiplicacao in vitro de mirtileiro (Vaccinium corymbosum) ‘Duke’. Para isso, foram testadas tres concentracoes de 2-isopenteniladenina (2iP) (0; 5 e 10 mg L-1) no meio WPM (Wood Plant Media); e cinco agentes estruturantes (casca de arroz in natura, casca de arroz carbonizada, fibra de coco, S-10 Beifort® e agar). Apos 60 dias foram avaliados: sobrevivencia (%); comprimento de brotacoes e de parte aerea (cm); taxa de multiplicacao; numero de brotacoes e massa seca de parte aerea (g). Analisou-se os substratos utilizados como agentes estruturantes quanto ao pH e condutividade eletrica. A casca de arroz in natura, o S-10 Beifort®, e a casca de arroz carbonizada nao diferiram do agar quanto ao comprimento de brotacoes. Na casca de arroz in natura obteve-se o maior comprimento de parte aerea (1,64 cm), diferindo dos demais tratamentos. Na ausencia de 2iP o S-10 Beifort® apresentou a maior taxa de multiplicacao (2,97). Para o numero de brotacoes o S-10 Beifort®, a casca de arroz in natura e carbonizada nao diferiram do agar. Entretanto, quando acrescido de regulador, o agar apresenta um desempenho maior em relacao aos residuos. Sendo assim, a casca de arroz in natura, a casca de arroz carbonizada, e o S-10 Beifort® apresentam-se como potencias estruturadores fisicos do meio de cultura, podendo ser utilizados sem o uso de 2iP.

Concentrations of cytokinin and the use of agricultural residues in the in vitro propagation media of highbush blueberry