Propagação assexuada de Cupressus lusitanica

Kratz, Dagma; Wendling, Ivar; Brondani, Gilvano Ebling; Dutra, Leonardo Ferreira

doi:10.4336/2010.pfb.30.62.161

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…The treatment with young mini-cuttings showed 87.2% of rooting, an increase of 78.3% compared to the treatment with mature mini-cuttings (8.9%). Lower rooting capacity of mini-cuttings from mother plants with advanced physiological age had already been observed in potatoes [8] and woody species [14]- [16], which shows that the juvenility of the propagation material can determine the success of adventitious rooting.…”

Section: Second Experimentsmentioning

confidence: 80%

Rooting Potential of Mini-Cuttings for the Production of Potato Plantlets

Bisognin

Bandinelli²,

Kielse³

et al. 2015

AJPS

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The production of mini-tubers under soilless cultivation system increased the availability of pathogen-free seed potatoes. The objective of this study was to evaluate the rooting capability of mini-cuttings of potato clones as a function of the irrigation solution and the physiological age of the mother plant, under soilless cultivation system. Potato mini-cuttings were collected from young and mature plants of the cultivars Asterix and Macaca and the advanced clone SMINIA 793101-3. The young plants were newly acclimatized individuals and the mature plants were at the stage of producing mini-tubers. In the first experiment, mini-cuttings originating from summer pruning of mature plants were grown under closed soilless cultivation system irrigated with a nutrient solution developed for the production of potato mini-tubers and a solution comprised of tap water only. The experiment was conducted in a 3 × 2 factorial arrangement (clones and irrigation solutions) in the complete random design with four replicates of 15 mini-cuttings. In the second experiment, the young and mature mini-cuttings were established under a closed soilless cultivation system irrigated with nutrient solution. The experiment was conducted in a 3 × 2 factorial arrangement (clones and physiological age of the mother plant) in the complete random design with four replicates of 15 mini-cuttings. In both experiments, the percentage of rooting and survival of mini-cuttings, number of roots and length of the longest root were assessed at 21 days of cultivation. Potato mini-cuttings can be rooted under closed soilless cultivation system irrigated with nutrient solution or tap water. Mini-cuttings of young plants have higher rooting capability compared to the ones taken from mature plants. The loss of rooting capability depends upon the potato cultivar.

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Section: Second Experimentsmentioning

confidence: 80%

Rooting Potential of Mini-Cuttings for the Production of Potato Plantlets

Bisognin

Bandinelli²,

Kielse³

et al. 2015

AJPS

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“…Wendling et al (2009) ao estudarem a técnica da decepa em araucária para a indução de brotações epicórmicas em árvores adultas, demostraram a viabilidade desse método para o resgate de matrizes, conseguindo 60% de árvores com brotações, encontrando entre 7 e 59 brotos por matriz, com uma variação em altura entre 5 e 37 cm. Avaliando a indução de brotações epicórmicas em cepas, no enraizamento de estacas e enxertia no resgate de árvores adultas de Cupressus lusitanica, Kratz et al (2010) observaram pouca emissão de brotações em árvores de 5 anos, mortalidade nas cepas provenientes de árvores de 10 anos e baixos índices de enraizamento para as estacas coletadas das cepas, conseguindo melhores resultados pelo método da enxertia para o resgate de material das árvores selecionadas.…”

Section: Discussionunclassified

Resgate vegetativo de árvores de Tectona grandis Linn F. pelo enraizamento de estacas

Badilla¹,

Xavier²,

Murillo-Gamboa³

2016

NATIVA

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RESUMO:O objetivo desse trabalho foi avaliar o enraizamento de estacas provenientes das brotações advindas da decepa e do anelamento do caule de árvores de Tectona grandis, assim como de estacas originadas do sistema radicular. Foram selecionadas árvores em plantios comerciais (propagados via seminífera) de 5, 10 e 15 anos de idade, na fazenda Bacaeri, localizada no município Alta Floresta, Mato Grosso. Foram selecionadas 20 árvores por idade, sendo aplicados os três tratamentos (decepa, anelamento e coleta de raiz). O experimento seguiu um arranjo fatorial (3 x 3), em delineamento estatístico inteiramente ao ocaso, considerando as três idades e os três tratamentos testados. Com os resultados obtidos foram verificadas diferenças significativas, para a brotação e número de brotos, em relação à idade, à técnica de resgate, não obstante não foram encontradas diferenças estatísticas na interação "idade x técnica de resgate". Quanto ao enraizamento das estacas, diferenças estatísticas foram observadas somente quanto à técnica de resgate. Os resultados indicaram que as técnicas de resgate, pela decepa e pelo anelamento do caule demostraram ter potencial no resgate vegetativo desta espécie. O resgate de árvores da teca pelo método da estaquia radicular, não se torna viável nas condições avaliadas, pelo fato da baixa taxa de enraizamento (4%) e não obtenção de brotações nas estacas.Palavras-chave: propagação vegetativa, silvicultura clonal, teca, estaquia. Redemption vegetative of the Tectona grandis Linn F. trees by the stakes rootingABSTRACT: The objective of this study was to evaluate the rooting of cuttings of shoots arising from coppicing and stem girdling of teak trees, as well as stakes originated the root system. Trees were selected in commercial plantations (propagated via seminiferous) of 5, 10 and 15 years old, in Bakirifarm, located in the city Alta Floresta, Mato Grosso, Brazil. Twenty trees were selected by age, the three treatments being applied (cuts off, annealingand root collection). The experiment followed a factorial arrangement (3 x 3) in experimental design entirely to the decline, considering the three ages and the three treatments tested. With the results obtained significant differences were found for the budding and number of shoots in relation to age, rescue technique, never the less there were no statistical differences in the interaction "old x rescue technique". As for root cutting, statistical differences were observed only on the rescue technique. The results indicated that the rescue techniques by cuts off and the stem girdling demonstrated a potential in vegetative recovery of this species. The rescue of teak trees by the method of root cuttings, does not be come viable under the conditions evaluated, because of the low strike rate (4%) and not getting shoots at the stake.

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“…Em termos de crescimento e desenvolvimento da planta destacam-se os hormônios vegetais (Taiz & Zeiger, 2009) e, dentre as diversas classes, as auxinas desempenham papéis importantes no ciclo vegetativo, além de estarem intimamente relacionadas ao enraizamento de propágulos (Ludwig-Müller, 2000;Müller & Weiler, 2000;Pollmann et al, 2009;Kratz et al, 2010). O triptofano é um aminoácido comum em plantas que é considerado um precursor de AIA (Müller et al, 2002;Pollmann et al, 2009), sendo que o Zn é essencial para a sua síntese (Malta et al, 2002;Ishihara et al, 2007;Souza & Pereira, 2007).…”

Section: Introductionunclassified