Pre and post-severance effects of light quality on carbohydrate dynamics and microcutting adventitious rooting of two Eucalyptus species of contrasting recalcitrance

Ruedell, Carolina Michels; Almeida, Márcia Rodrigues de; Schwambach, Joséli; Posenato, Carina Fronza; Fett-Neto, Arthur Germano

doi:10.1007/s10725-012-9766-3

Cited by 54 publications

(37 citation statements)

References 54 publications

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“…The high correlation between the percentage of rooting and maintenance of the original leaves demonstrated the importance of the leaves for the provision of further metabolites synthesized on mother plant (RUEDELL et al, 2013). Permanence of leaves on stem cuttings has been referred as an important factor both for survival and for rooting (BEYL & SHARMA, 2014;FERREIRA et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Maximum efficiency concentration of indole butyric acid in promoting the rooting of Japanese Flowering Cherry

et al. 2017

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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.

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Section: Resultsmentioning

confidence: 99%

Maximum efficiency concentration of indole butyric acid in promoting the rooting of Japanese Flowering Cherry

et al. 2017

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“…These results suggest that the rooting competence is not only influenced by the propagation method, but could be due to differences in physiological status of the cuttings or combination of both the factors. In E. grandis and E. globulus, adventitious rooting of microcuttings derived from seedling material was influenced by carbohydrate partitioning in donor plant (Ruedell et al 2013). The problems of physiological ageing in clonal propagation of eucalypts and other forest trees were reported in several occasions (Wendling et al 2014a).…”

Section: Resultsmentioning

confidence: 99%

Micropropagation of Eucalyptus camaldulensis for the production of rejuvenated stock plants for microcuttings propagation and genetic fidelity assessment

et al. 2014

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Adventitious rooting, a key step in clonal propagation is affected by tree maturation. Micropropagation followed by microcuttings propagation has the potential to rejuvenate the clones thereby enhancing the rooting potential and minimize intra clonal variation. In this study, 33 superior performing Eucalyptus camaldulensis clones were propagated by rooting of stem cuttings (SCs) and micropropagation. Micropropagated plantlets were used as stock plants for microcutting propagation. Rooting of SCs and micropropagation was carried out with the coppice shoot cuttings and axillary buds respectively, obtained from approximately fourteen year old trees that had undergone one vegetative propagation cycle. The adventitious rooting recorded was significantly higher in micropropagation (24.8-100 %) and microcuttings (43-95 %) than SCs method (9.3-75.5 %). Studies on ontogeny of adventitious rooting showed the emergence of root primordium from the phloem region and root initials were noticed within 5-9 days after auxin treatment. Further, molecular marker analysis showed genetic uniformity except for two ramets, detected using inter simple sequence repeats (ISSR) markers and suitable corrective measures were taken to avoid entry of such plantlets for mass multiplication. This study demonstrates the importance of integration of micropropagation and microcuttings production for rejuvenation and mass multiplication. Although current rejuvenation and root induction treatments favored adventitious rooting, the basic mechanisms involved in rejuvenation and adventitious rooting need to be explored for hassle free industrial rooting process, consequently cost effective propagation.

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“…A transparent cellophane filter was used as control. Spectral characteristics of filter output have been previously described (Ruedell et al, 2013). Leaves were sampled after 30 min, 1, 12, 24 and 48 h after the beginning of the experiment.…”

Section: Red Light Treatmentmentioning

confidence: 99%

“…Transparent filters were used as control. Spectral outputs were as described (Ruedell et al, 2013). Irradiance intensity was maintained equivalent at levels described above by regulating distance from the source.…”

Section: Uv-c and Red Light Enrichment Of Young Plantsmentioning

confidence: 99%

Irradiance-based treatments of Quillaja brasiliensis leaves (A. St.-Hil. & Tul.) Mart. as means to improve immunoadjuvant saponin yield

Yendo

Costa

Fleck

et al. 2015

Industrial Crops and Products

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Pre and post-severance effects of light quality on carbohydrate dynamics and microcutting adventitious rooting of two Eucalyptus species of contrasting recalcitrance

Cited by 54 publications

References 54 publications

Maximum efficiency concentration of indole butyric acid in promoting the rooting of Japanese Flowering Cherry

Maximum efficiency concentration of indole butyric acid in promoting the rooting of Japanese Flowering Cherry

Micropropagation of Eucalyptus camaldulensis for the production of rejuvenated stock plants for microcuttings propagation and genetic fidelity assessment

Irradiance-based treatments of Quillaja brasiliensis leaves (A. St.-Hil. & Tul.) Mart. as means to improve immunoadjuvant saponin yield

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