Enraizamento de estacas de atemoieira ‘Gefner’ tratadas com auxinas

Ferreira, Gisela; Ferrari, Tainara Bortolucci; Pinho, Sheila Zambello de; Savazaki, Edson Tadashi

doi:10.1590/s0100-29452008000400039

Cited by 9 publications

(9 citation statements)

References 5 publications

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“…Ferreira et al (2008) verified greater rooting viability of apical cuttings for atemoya cv. 'Gefner' species, relating those results with the lower lignification of apical branches, the bigger quantity of meristematic cells and a more active metabolism compared to other types of cuttings.…”

Section: Discussionmentioning

confidence: 80%

ROOTING OF Araucaria angustifolia: TYPES OF CUTTINGS AND STOCK PLANTS SEX

2016

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-Araucaria angustifolia is native to Brazil and has always raised economic interest for the qualities of its timber and as a supplier of pine nuts for human consumption. The scarce germination viability of the stored seeds and the possibility to produce rooted cuttings all year round make cuttings propagation a good alternative for the production of plants, giving also the possibility to obtain genetically superior clones. On this basis, we assessed the influence of stock plants sex and type of cuttings (apical and intermediate) on the percentage of survival, rooting and vigor of the cuttings, together with the efficiency of this technique in the production of rooted cuttings of this species. So, cuttings from orthotropic shoots, collected in a clonal garden composed by feminine and masculine plants, had their survival percentages assessed at 60, 90, 120 and 150 days after installation of the experiment (DAI). Rooting in full sunlight area after 180 days, together with vigor characteristics of roots and aerial portion at 120 and 180 DAI were also evaluated. At 180 DAI, apical female cuttings presented the greatest rooting percentage (53.7%), number of roots (1.2) and average length of roots at the bottom of the rooting tray (4.4 cm). On the other hand, the applied cuttings procedures showed to be adequate to increase the rooting percentages of the species, which, supported by the fact that this technique is important for the formation of rooted cuttings to be used in the mini-cuttings technique, indicates that it can be considered efficient.Keywords: Brazilian pine; Cloning; Cuttings production. ENRAIZAMENTO DE Araucaria angustifolia: TIPOS DE ESTACAS E SEXO DAS PLANTAS MATRIZESRESUMO -Araucaria angustifolia (araucária) é nativa do Brasil e sempre despertou interesse econômico por suas qualidades madeireiras e como fornecedora de pinhões para alimentação humana. A baixa viabilidade na germinação de suas sementes quando armazenadas e a possibilidade de produzir mudas durante o ano inteiro fazem com que a estaquia se apresente como alternativa para produção de mudas, gerando ainda a possibilidade de obtenção de clones geneticamente superiores. Com base nisso, avaliou-se a influência do sexo das matrizes e o tipo de estaca (apical e intermediária) na sobrevivência, enraizamento e vigor de suas estacas, bem como a eficiência desta técnica na produção de mudas da espécie. Para tanto, estacas de brotos ortotrópicos coletadas em jardim clonal de plantas masculinas e femininas foram avaliadas quanto à sobrevivência aos 60, 90, 120 e 150 dias após a estaquia (DAI) e o enraizamento a pleno sol aos 180 dias, bem como características de vigor radicial e aéreo aos 120 e 180 DAI. Aos 180 DAI, estacas femininas apicais apresentaram maior enraizamento (53,7%), número de raízes (1,2) e comprimento médio de raízes no fundo do tubete (4,4 cm). Por outro lado, os procedimentos de estaquia utilizados mostraram-se adequados para incrementar os percentuais de enraizamento da espécie, o que, aliado ao fato da técnica ser impor...

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Section: Discussionmentioning

confidence: 80%

ROOTING OF Araucaria angustifolia: TYPES OF CUTTINGS AND STOCK PLANTS SEX

2016

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“…Hence, cuttings collected from the medial portion of productive branches do not favor their rooting. Ferreira et al [20] observed in atemoya tree (cv. Gefner) greater number of buds in medial and basal cuttings.…”

Section: Resultsmentioning

confidence: 98%

“…Salibe et al [26], with "VR 043-43" grapevine rootstock, demonstrated that the use of boric acid (150 μg/L) was not efficient in the rooting process. Ferreira et al [20] reported that the formation of atemoya "Gefner" seedlings by cutting can be performed through apical cuttings without the need for treatment with plant regulators.…”

Section: Sources Of Variationmentioning

confidence: 99%

Indole Butyric and Boric Acids in the Rooting of Atemoya “Thompson” Stem Cuttings

Gonçalves¹,

Nasser²,

Arruda³

et al. 2018

JAST-B

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Abstract:The current study aimed to evaluate the effect of indole butyric acid (IBA) and boric acid to induce rooting on atemoya "Thompson" cuttings. A randomized block design with 10 treatments and four blocks was laid out. The treatments consisted in the use of different levels of IBA (i.e., 0, 500, 1,000, 2,000 and 4,000 mg/L) with or without boric acid at 150 mg/L. The cuttings were placed to root in expanded polystyrene (EPS) trays with 72 cells and kept in a greenhouse under misting. At 120 d after planting, leaf dry and fresh masses (g), root dry and fresh masses (g), percentage of rooting, live cuttings (LC), live cuttings with callus (LCC), number of roots per cuttings and number of emitted leaves (NEL) were evaluated. Data were submitted to analysis of variance and comparison of means by Tukey test at 5% probability. Results indicated no statistically significant differences in both application methods (separate or associated with boric acid) for all evaluated variables, except for LC, in which boric acid provided higher survival rates. It could be concluded that the propagation method using either separate IBA application or associated with boric acid is unsuitable to induce rooting on atemoya "Thompson" cuttings.

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“…Silva (2004) e Silva et al (2004), trabalhando com Annona squamosa L. e Annona muricata, observou que no período de verão as porcentagens de enraizamento das estacas foram superiores quando comparado com as obtidas no período de inverno, justificando este fato, no estado fisiológico da planta matriz, quantidades de auxinas endógenas e substâncias co-fatores de enraizamento. Ferreira et al, (2008) trabalham com enraizamento de estacas de atemoeira cv. "Gefner" citam resultados satisfatório no enraizamento das estacas apicais sem tratamento e medianas tratadas com ANA (0,5%).…”

Section: Discussionunclassified