Propagation of herbaceous unrooted cuttings of cold-tolerant species under reduced air temperature and root-zone heating

Kohler, Annika E.; López, Roberto G.

doi:10.1016/j.scienta.2021.110485

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…Accordingly, this study used a thermostatic plate to heat the base of the cuttings to promote rooting, providing continuous ventilation to ensure a certain temperature difference between the upper and lower parts of the cuttings. In greenhouses, studies have used electric heating wires and plates to heat the substrate [60], and many have used rubber tubes or steam pipes to provide the heat [61][62][63]. Heating wires, tubes, or pipes heat the substrate unevenly; heating plates are better, but they can transfer heat from only one side.…”

Section: Discussionmentioning

confidence: 99%

Design and Optimization of Air Inlet in Cuttings Incubator

Gu,

Qian,

et al. 2024

Agronomy

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The microclimate environment can be conveniently controlled with accuracy by plant incubators, in which the cuttings propagation method can efficiently enhance seedling production. To ensure air flow evenly throughout the incubator, the scientific design of the air inlet is crucial. This study utilized a computational fluid dynamics (CFD) model to simulate the airflow patterns in a culture layer under different air inlet conditions. Furthermore, the optimal design parameters were determined by way of response surface methodology (RSM) and the Non-dominated Sorting Genetic Algorithm-II (NSGA-II). Adopting the optimal parameters, a prototype was manufactured, and a cuttings experiment was carried out with apple cuttings in the incubator. The results showed that the optimal air inlet radius is 90 mm, the optimal air inlet height is 188 mm, and the optimal uniform flow plate hole diameter is 13 mm. Meanwhile, the apple cuttings were able to root. Therefore, this incubator with optimal parameters can be used for cuttings. The study provides a methodological and theoretical basis for the future optimizing of air inlet parameters and promoting cuttings rooting.

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Section: Discussionmentioning

confidence: 99%

Design and Optimization of Air Inlet in Cuttings Incubator

Gu,

Qian,

et al. 2024

Agronomy

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“…Sufficient root volume is essential for adequate water and nutrient absorption and the successful establishment of a young plant. If a rooted cutting lacks a well-developed root system, it will be of inferior quality and may cause delays in shipping, transplantation, and the growth of the final product (Kohler & Lopez, 2021). According to Pandey et al (2019), the ideal substrate would allow high aeration and water retention capacity while being well-drained and free of pathogens.…”

Section: Number Of Rootsmentioning

confidence: 99%

Stimulatory Effect of Indole – 3 – Butyric Acid and Rooting Media on Adventitious Rooting in Epipremnum Aureum ‘Marble Queen’ Stem Cuttings

Attanayake R.M.T.D,

Dasanayaka Y.M.H.M.H,

Dilshan H.K.L

et al. 2023

IJAR

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Epipremnum aureum 'Marble Queen' has high demand in the floriculture industry and is propagated commercially using single nodal stem cuttings. In the floriculture industry, they are exported as rooted and unrooted cuttings. Two experiments were conducted to determine the rooting performance of 'Marble Queen' cuttings for both rooted and unrooted export purposes. Experiment one tested the rooting performances of unrooted cuttings after an export simulation (48-hour cold storage at 21°C). In experiment two, the effect of rooting media and IBA was evaluated to produce rooted cuttings. Two different rooting media (coir dust and oasis) and four different concentrations of IBA (0 mg·L-1, 250 mg·L-1, 500 mg·L-1, and 1000 mg·L-1) were tested. Rooting media showed the most significant effects on the rooting of 'Marble Queen' cuttings. Coir dust medium reported the highest number of roots per cutting, root-to-shoot ratio, and average root diameter. Minimum days to bud and root initiation and a higher number of leaf buds were observed in the oasis medium. Early rooting and a higher number of roots were observed with the application of 500 mg·L-1 IBA. The use of an appropriate rooting medium and optimum concentration of IBA would help in the rapid propagation of 'Marble Queen' cuttings. Applying 500 mg·L-1 IBA in the oasis medium was more efficient in early rooting and shoot growth of 'Marble Queen' cuttings. Coir dust medium, along with 500 mg·L-1 IBA, was most suitable for the efficient growth and development of 'Marble Queen' cuttings.

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“…It is recommended that when attempting to root R. columnifera cuttings in the cool season, one should apply between 26 and 32 C bottom heat to achieve optimum rooting. Root zone heating can also allow for cold-tolerant crops to be propagated at lower air temperatures, as described in a report on Calibrachoa, Campanula, Nemesia, Nepeta, Osteosperum, Petunia, and Phlox (Kohler and Lopez, 2021). It is suggested that bottom heat should be used when the temperature of the growing mix drops below 21 C, with most cuttings rooting best in media temperatures between 21 and 26 C (Perry, 1998).…”

Section: Seasonal Effects Of Bottom Heat and Genotypementioning

confidence: 99%

Vegetative Propagation of Ratibida columnifera (Nutt.) Wooton & Standl.

Hopkins

Arnold

Hall

et al. 2022

horts

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Variation in floral characteristics and growth habits within the native range of the North American wildflower Ratibida columnifera (Nutt.) Wooton & Standl. suggest potential for breeding and selection efforts to develop improved cultivars for commercial and residential landscapes. Toward that end, experiments in vegetative propagation were performed to enable perpetuation of unique germplasm. Stem development stage, applications of auxin, genotypic variation, and the effects of bottom heat applications were assessed to determine impacts on rooting percentages and adventitious root system quality measures. Younger apical stem sections rooted more readily and produced better quality root systems than more lignified basal stem cuttings. Optimal rooting percentages and rooted cutting quality ranged from 0.10% to 0.30% IBA (indole-3-butyric acid) quick dips, with 0.30% being optimal for most genotypes. Application of 26 °C bottom heat improved rooting ability in both cool and warm seasons compared with ambient and bottom heat of 32 °C. Bottom heat of 32 °C improved most rooting measures over ambient during the cool season, but not during the warm season. The degree of improvement in adventitious rooting associated with various developmental stage, auxin quick dips, and bottom heating varied among accessions of R. columnifera, suggesting that adventitious rooting characteristics should be evaluated as a selection criterion for cultivar development within this species.

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Propagation of herbaceous unrooted cuttings of cold-tolerant species under reduced air temperature and root-zone heating

Cited by 4 publications

References 17 publications

Design and Optimization of Air Inlet in Cuttings Incubator

Design and Optimization of Air Inlet in Cuttings Incubator

Stimulatory Effect of Indole – 3 – Butyric Acid and Rooting Media on Adventitious Rooting in Epipremnum Aureum ‘Marble Queen’ Stem Cuttings

Vegetative Propagation of Ratibida columnifera (Nutt.) Wooton & Standl.

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