Data/hora: 09/06/2024 10:34:07

Provedor de dados: | 65
País: | Brazil
Título: | Maximum efficiency concentration of indole butyric acid in promoting the rooting of Japanese Flowering Cherry
Autores: | Fragoso,Rosimeri de Oliveira; Stuepp,Carlos André; Rickli,Helena Cristina; Zuffellato-Ribas,Katia Christina; Koehler,Henrique Soares.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Current-year shoots; Cutting technique; Ornamental species; Prunus serrulata; Regression analysis.
Resumo: | ABSTRACT:  Prunus serrulata is a species widely used in the ornamentation and its economic importance is mainly due to the time of its flowering. The objective was to assess the feasibility of cutting technique for propagating P. serrulata , using stem cuttings from current-year shoots, and to estimate the maximum efficiency concentration of auxin indole butyric acid (IBA), in the promotion of rooting. Collection of plant material took place in late spring. Cuttings were made with about 8±1cm length and two leaves reduced to 50% of its original surface. Twenty one IBA concentrations have been assessed (0, 250, 500, 750, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000, 3250, 3500, 3750, 4000, 4250, 4500, 4750 e 5000mg L-1), applied in base of cuttings, which were placed in acclimatized greenhouse. After 60 days, there was a gradual increase in the rooting percentage compared to the increment of IBA to the approximate concentration of 2700mg L-1, with results higher than 80%. In addition, low efficiency concentrations of growth regulators have resulted in fewer roots per cutting, which could compromise the survivability of the seedlings under ambient conditions. Conversely, the decrease in the percentage of callus may be an indication that root formation in P. serrulata occurs directly, without requiring callus formation and its further de-differentiation and re-differentiation in roots.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100203
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20150894
Formato: | text/html
Fonte: | Ciência Rural  v.47 n.1 2017
Fonte: | info:eu-repo/semantics/openAccess