Roots of Mini-Cutting of Clones of Sequoia Sempervirens in Different Seasons of the Year

Pereira, Mariane de Oliveira; Ângelo, Alessandro Camargo; Navroski, Márcio Carlos; Nicoletti, Marcos Felipe; Nascimento, Bruno; Sá, Alexandra Cristina Schatz; Gasparin, Ezequiel; Lovatel, Queli Cristina

doi:10.1590/01047760201824042604

Cited by 3 publications

(4 citation statements)

References 23 publications

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“…This rooting result can be considered low considering other works with the species, usually with cuttings or mini-cuttings kept in a greenhouse. Pereira et al (2018) found rooting over 85% in all seasons of the year. Navroski et al (2015) achieved rooting of almost 80% using 4,000 mg L -1 of AIA (indole-3-acetic acid).…”

Section: Pereira Et Almentioning

confidence: 94%

“…According to Ragonezi et al (2010) the majority of works with conifer rooting achieve better results with higher temperatures during the day (25-27 ºC) and lower during the night (15-18 ºC). Testing the rooting of Sequoia sempervirens in all seasons of the year, Pereira et al (2018) found rooting higher than 85% in all seasons, with average temperatures ranging from 15 to 26 ºC.…”

Section: Pereira Et Almentioning

confidence: 98%

“…One option that has been used in clonal propagation is the mini-tunnel, a protected environment that covers a smaller, tunnelshaped, plastic-lined area. Results show that the use of this type of structure keeps the environment moist and warm, increasing rooting (Pereira et al, 2018).…”

Section: Introductionmentioning

confidence: 96%

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ROOTING ENVIRONMENTS IN Sequoia sempervirens MINI-CUTTINGS OF CLONE A228

Pereira

Navroski

Ângelo

et al. 2019

CERNE

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Section: Pereira Et Almentioning

confidence: 94%

Section: Pereira Et Almentioning

confidence: 98%

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ROOTING ENVIRONMENTS IN Sequoia sempervirens MINI-CUTTINGS OF CLONE A228

Pereira

Navroski

Ângelo

et al. 2019

CERNE

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show abstract

“…The majority of studies with conifer rooting achieve better results with lower temperatures during the night (15-18 ºC) and higher during the day (25-27 ºC). Working with the rooting in the seasons of the year in Sequoia sempervirens, Pereira et al (2018) got rooting higher than 85% in all seasons, with humidity greater than 80% and average temperatures ranging from 15 to 26 ºC.…”

Section: Mini-cuttings Productionmentioning

confidence: 99%

Influence of shadowing in Sequoia sempervirens (D. Don) Endl. mini-stumps and mini-cuttings

et al. 2022

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The aim of the work was to analyze the influence of variables such as shading, temperature and humidity in the production and rooting of mini-cuttings of Sequoia sempervirens (D. Dom) Endl. in a clonal mini-garden. The experiment was conducted at the Forest Nursery at the University of Santa Catarina State -CAV/UDESC, Lages -SC. The minicuttings were obtained by vegetative rescue of a single clone (A228). The original S. sempervirens individuals studied are located in the National Forest of São Francisco de Paula -RS (FLONA). Sprouts were collected 90 days after the application of girdling rescue techniques. Subsequently, mini-stumps were obtained, which were submitted to three different treatments: T1 -Mini-stumps without shading protection, T2 -Mini-stumps with single layer of shading and T3 -Mini-stumps with double layer of shading. There was no significant difference for humidity and temperature in relation to the production of mini-cuttings by the mini-stumps, while for shading the treatments T2 and T3 showed greater efficiency. It is possible that the shading treatments on S. sempervirens mini-stumps allows the vegetative tissue to be more juvenile, obtaining excellent results in cutting.

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Impacts of genetic selection on Sequoia sempervirens mini-cutting rooting and initial growth in the field

Lovatel

Rosa

Sá

et al. 2021

NZJFS

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Background: Vegetative propagation from superior individuals allows multiple copies of plants that are genetically identical to the parent plant to be obtained. However, vegetative propagation success varies among individual genotypes, with some clones having more difficulty forming roots than others. The aim of this study was to evaluate the genetic gain in Sequoia sempervirens (D.Don) Endl. clones using parameters describing vegetative propagation success and initial growth in field. Methods: Vegetative propagation success was quantified for 16 clones in a completely randomised design consisting of 10 replications, each containing 10 mini-cuttings. At 90 days, rooting (RT), survival (SV) and the number of new shoots (NS) were evaluated. Performance after planting in the field was assessed using 13 clones from the previous experiment, arranged in linear parcels of 10 plants with 8 replicates. After 18 months, survival (SV), stem diameter (SD), height (H) and dominance breakdown (DB) were assessed. Estimates of variance components, heritability and genetic correlations were obtained using the Selegen-REML/BLUP software. Results: The mini cuttings of the 16 clones had a coefficient of genetic variation (CVgi%) of 32.32% for RT, 5.44% for SV and 5.35% for NS. The heritability of the total genetic effects (H2 g) for RT was 0.68. The clones with the best predicted genotypic classifications for the characteristics evaluated in the field were A116, A140 and A138 for SV, A126, A140 and A138 for SD, A138, A140 and A117 for H and A138, A228 and A116 for DB. Conclusions: In general, it was possible to obtain high genetic gain for rooting and medium gain for dendrometric variables in the field.

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Roots of Mini-Cutting of Clones of Sequoia Sempervirens in Different Seasons of the Year

Abstract: The rooting process of sequoia minicuttings presents clonal infl uence. The average rooting is over 85% in all seasons. The rooting of minicuttings occurs between 50 and 70 days. It is indicated the presence of 90 days of minicuttings in the rooting environment.

Cited by 3 publications

References 23 publications

ROOTING ENVIRONMENTS IN Sequoia sempervirens MINI-CUTTINGS OF CLONE A228

ROOTING ENVIRONMENTS IN Sequoia sempervirens MINI-CUTTINGS OF CLONE A228

Influence of shadowing in Sequoia sempervirens (D. Don) Endl. mini-stumps and mini-cuttings

Impacts of genetic selection on Sequoia sempervirens mini-cutting rooting and initial growth in the field

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