Enraizamento de estacas semilenhosas de lichieira utilizando ácido indolbutírico
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Data
2005-04-01
Autores
Carvalho, Carlos Miranda
Cunha, Rubens José Pietsch [UNESP]
Rodrigues, João Domingos [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Fruticultura
Resumo
O objetivo deste trabalho foi estudar o enraizamento de estacas semilenhosas de lichieira ( Litchi chinensis Sonn.) da cultivar Bengal, empregando ácido indolbutírico (AIB) e sistema de nebulização intermitente. As estacas apicais foram coletadas nos meses de outubro (Primavera), janeiro (Verão) e abril (Outono), acondicionadas adequadamente e transferidas para uma estufa com nebulização intermitente, onde receberam as aplicações de : 0; 1.000; 2.000; 3.000 e 4.000 mg L-1 de AIB, com imersão da base das estacas, durante 10 segundos, e de 200 mg L-1 de AIB, com imersão das bases por 24 horas, em aeração. em seguida, foram colocadas para enraizar em substrato de vermiculita, com casca de arroz carbonizada, na proporção de 1:1. Após 100 dias, foram obtidos os dados referentes à porcentagem de estacas vivas com folhas, porcentagem de estacas enraizadas por parcela, comprimento médio de raiz por estaca enraizada (cm), número médio de raízes formadas por estaca enraizada, massa média da matéria fresca das raízes (g), massa média da matéria seca das raízes(g). Pelos resultados, concluiu-se que não há necessidade da aplicação do AIB para o enraizamento de estacas de lichieira, cultivar Bengal, e que a melhor época de coleta das mesmas é o verão.
The objective of the work was to study the rooting of semi-hardwood litchi cuttings (Litchi chinensis Sonn.) of Bengal cultivar using indolbutiric acid (IBA) in an intermittent nebulization system. The apical cuttings were collected in October (spring in Brazil), January (summer) and April (fall). The cuttings were properly arranged and transferred to greenhouse with intermittent mist and treated with 0, 1000, 2000, 3000 and 4000 mg L-1 indolbutiric acid applications, having the cuttings bases been immersed during 10 seconds and with 200 mg L-1 indolbutiric acid application, having the bases been immersed for 24 hours in aeration. They were put to rooting in vermiculite substratum with 1:1 carbonized rice husk. After 100 days, the data referring to live cuttings with leaves percentage, the rooted cuttings percentage for each parcel, average root length per rooted cutting (in centimeters), average number of roots formed per cutting, average weight of the roots fresh matter (in grams) were obtained, average weight of the root dry matter(in grams) were obtained. By the results it was concluded that there is no need of indolbutiric acid for the litchi cuttings, Bengal cultivar rooting and the best time for collecting the cuttings is summer.
The objective of the work was to study the rooting of semi-hardwood litchi cuttings (Litchi chinensis Sonn.) of Bengal cultivar using indolbutiric acid (IBA) in an intermittent nebulization system. The apical cuttings were collected in October (spring in Brazil), January (summer) and April (fall). The cuttings were properly arranged and transferred to greenhouse with intermittent mist and treated with 0, 1000, 2000, 3000 and 4000 mg L-1 indolbutiric acid applications, having the cuttings bases been immersed during 10 seconds and with 200 mg L-1 indolbutiric acid application, having the bases been immersed for 24 hours in aeration. They were put to rooting in vermiculite substratum with 1:1 carbonized rice husk. After 100 days, the data referring to live cuttings with leaves percentage, the rooted cuttings percentage for each parcel, average root length per rooted cutting (in centimeters), average number of roots formed per cutting, average weight of the roots fresh matter (in grams) were obtained, average weight of the root dry matter(in grams) were obtained. By the results it was concluded that there is no need of indolbutiric acid for the litchi cuttings, Bengal cultivar rooting and the best time for collecting the cuttings is summer.
Descrição
Palavras-chave
Litchi chinensis, reguladores vegetais, propagação vegetativa, auxinas, Litchi chinensis, plant regulators, vegetative propagation, auxins
Como citar
Revista Brasileira de Fruticultura. Sociedade Brasileira de Fruticultura, v. 27, n. 1, p. 95-97, 2005.