Miniestaquia de Eucalyptus benthamii: efeito do genótipo, AIB, zinco, boro e coletas de brotações

Brondani, Gilvano Ebling; Baccarin, Francisco José Benedini; Bergonci, Tábata; Gonçalves, Antônio Natal; Almeida, Marcílio de

doi:10.1590/s0104-77602014000100018

Cited by 28 publications

(26 citation statements)

References 15 publications

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“…The average, maximum and minimum temperatures of the day, in given time-intervals, are parameters that might be considered in establishing an optimal range. Brondani et al (2014) reported that Eucalyptus benthamii minicuttings exhibited increased callus formation on their basal region with high temperatures, indicating the influence of maximum temperatures in rhizogenesis.…”

Section: Introductionmentioning

confidence: 99%

Mini-incubators improve the adventitious rooting performance of Corymbia and Eucalyptus microcuttings according to the environment in which they are conditioned

Brondani

Oliveira

Konzen

et al. 2018

An. Acad. Bras. Ciênc.

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We addressed a major challenge in the in vitro clonal propagation of Corymbia citriodora, Eucalyptus urophylla and E. benthamii by using an ex vitro adventitious rooting strategy in a mini-incubator. Miniincubators were placed in four environments for rooting. A shade house with no fogging system and a greenhouse with no ventilation but with a fogging environment had the best performance in terms of rooting, root growth and survival of microcuttings. Daily recording of the temperature within each miniincubator in each environment allowed the verification of negative correlations between the maximum average temperature and the survival, adventitious rooting and root growth. The ideal maximum air temperature for the efficient production of clonal plants was 28.4°C (± 5.5°C), and the minimum was 20.3°C (± 6.2°C). E. benthamii was more sensitive to higher temperatures than C. citriodora and E. urophylla. Nevertheless, placing mini-incubators in the shade house with no fogging system resulted in a stable and uniform performance among the three species, with 100.0% survival and 81.4% rooting. Histological sections of the adventitious roots revealed connection with the stem vascular cambium. Therefore, our experimental system demonstrated the potential of mini-incubators coupled with the proper environment to optimize the adventitious rooting performance of microcuttings.

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Section: Introductionmentioning

confidence: 99%

Mini-incubators improve the adventitious rooting performance of Corymbia and Eucalyptus microcuttings according to the environment in which they are conditioned

Brondani

Oliveira

Konzen

et al. 2018

An. Acad. Bras. Ciênc.

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“…The four combinations conducted for cleft grafting (scion/rootstock: K. The solution pH was adjusted to 5.8 at 25°C with HCl or NaOH, both at 1.0 M. Modified from Brondani et al (2014).…”

Section: Cleft Graftingmentioning

confidence: 99%

“…A critical factor in determining adventitious rooting was the application of a nutrient solution with at least 50% of the macro and micronutrients concentrations proposed by Brondani et al (2014) (Table 3). Moreover, the application of IBA improved adventitious rooting.…”

Section: Air Layeringmentioning

confidence: 99%

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Propagation of Khaya Anthotheca: Interspecific Grafting With Swietenia Macrophylla and Air Layering

Filho

Carvalho

Oliveira

et al. 2016

CERNE

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Swietenia macrophylla yields high-quality wood; however, its vulnerability to extinction coupled with challenges for its cultivation have brought attention to its replacement for alternative species such as the Khaya anthotheca. The species has been recently introduced to South America, with potential for the production of high-quality wood. However, limited background on breeding and efficient strategies for its vegetative propagation exist. Here, we achieved significant results with the application of cleft grafting and air layering for the propagation of K. anthotheca plants grown from seeds. First, we analyzed the compatibility of scions and rootstocks for intraspecific and interspecific cleft grafting combinations of K. anthotheca and S. macrophylla. Second, air layering was performed in K. anthotheca seedlings irrigated with three nutrient solution (100%, 50% and 25% of the initial concentration of nutrients) combined with the application of indole-3-butyric acid (IBA) to evaluate adventitious rooting. From cleft grafting, we achieved an overall graft compatibility and survival of 48% after 200 days. However, the interspecific combination of S. macrophylla (scion) and K. anthotheca (rootstock) implicated in no compatibility, while the reciprocal resulted in 52% of compatibility. Through air layering, the irrigation with the nutrient solution with at least 50% of the nutrients concentration and with IBA (3.0 or 8.0 g.L-1) resulted in the best adventitious rooting. Overall, we recommend cleft grafting, except for the combination S. macrophylla (scion) and K. anthotheca (rootstock), with no compatibility. Air layering might also be useful for the propagation of K. anthotheca genotypes in breeding programs.

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“…A redução no percentual de sobrevivência entre as fases de casa de vegetação e casa de sombra são tidas como normais para espécies subtropicais de Eucalyptus (BRONDANI et al, 2014). Relata-se que, por vezes, a sobrevivência ao fim da casa de vegetação pode reduzir a níveis de perda total do material (BRONDANI et al, 2010a;.…”

Section: Figura 2 Sobrevivência De Miniestacas De E Dunnii Avaliadaunclassified

PROMOÇÃO DO CRESCIMENTO E ENRAIZAMENTO DE MINIESTACAS DE Eucalyptus dunnii POR RIZOBACTÉRIAS E BACTÉRIAS DO FILOPLANO

Spassin¹,

Vandresen²,

Neves³

et al. 2016

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ResumoO uso de microrganismos com efeito de promotores de crescimento e enraizamento de plantas tem apresentando resultados promissores no desenvolvimento de mudas clonais. Assim, o objetivo do estudo foi avaliar o potencial de isolados de rizobactérias e residentes do filoplano na promoção de crescimento e enraizamento de miniestacas de Eucalyptus dunnii. O experimento foi conduzido no delineamento de blocos casualizados, em arranjo fatorial 4 x 4 x 3, sendo os fatores constituídos por quatro coletas, quatro isolados bacterianos e três métodos de aplicação. Foram avaliados o percentual de sobrevivência das miniestacas na saída da casa de vegetação, casa de sombra e área de pleno sol, e o enraizamento das miniestacas aos 90 dias de idade. A resposta na sobrevivência de mudas na casa de vegetação, sombra e área de pleno sol variaram de acordo com o isolado, forma de aplicação e período de realização da coleta. Não foi observado efeito significativo dos isolados bacterianos sobre o enraizamento das miniestacas. Os isolados bacterianos apresentaram ora efeito benéfico, ora ausência de efeito para a sobrevivência e enraizamento das miniestacas. Por ser o primeiro relato do uso de rizobactérias e residentes de filoplano na promoção de crescimento de E. dunnii, há necessidade de novos estudos para a confirmação da efetividade desses microrganismos. Palavras-chave: Miniestaquia; propagação vegetativa; produção de mudas. AbstractGrowth promoting and rooting of Eucalyptus dunnii for rhizobacteria and epiphytic bacteria. The use of microorganisms with plant growth promoting and rooting effect they have results promising for production of clonal seedlings of Eucalyptus. Thus, the aim of this study was evaluate rhizobacteria and epiphytic bacterial potential in the growth promoting and rooting of minicutting of Eucalyptus dunnii. The assay were conducted in randomized block design in a factorial 4 x 3x 3, being factors period to harvesting of shoots, four bacterial isolates and three methods of bacterial application. Percent survival of minicuttings was assessed in the end of greenhouse phase, in the end of shadow house phase and in the end of acclimation sun area phase, the minicutting rooting was evaluate after 90 days of staking of minicuttings. Thereply in the survival in the green house, shadow house and the acclimation sun area has varied according with bacterial isolates, method of applied and period assay realized. Do not observed significant effect of the isolates under rooting of the minicuttings. Based on the results concluded that bacterial isolates sometimes has beneficial effect, sometimes has nothing effect under survival and rooting of minicutting of E. dunnii. How is the first relate of the use to rhizobacteria and epiphytic bacterias as E. dunnii growth promoter and rooting, more studies are needed for confirmation of effective these microorganisms. Keywords: Minicutting; vegetative propagation; seedling production. INTRODUÇÃOA produção de mudas é um dos fatores que influenciam o cultivo de espécies flores...

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Miniestaquia de Eucalyptus benthamii: efeito do genótipo, AIB, zinco, boro e coletas de brotações

Cited by 28 publications

References 15 publications

Mini-incubators improve the adventitious rooting performance of Corymbia and Eucalyptus microcuttings according to the environment in which they are conditioned

Mini-incubators improve the adventitious rooting performance of Corymbia and Eucalyptus microcuttings according to the environment in which they are conditioned

Propagation of Khaya Anthotheca: Interspecific Grafting With Swietenia Macrophylla and Air Layering

PROMOÇÃO DO CRESCIMENTO E ENRAIZAMENTO DE MINIESTACAS DE Eucalyptus dunnii POR RIZOBACTÉRIAS E BACTÉRIAS DO FILOPLANO

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