Propagation

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📄 Leaf Response to Different Light Spectrum Compositions during Micropropagation of Gerbera Axillary Shoots

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Submitted by Elsewhere on 2020-Nov-21 Sat 23:49

The experiment evaluated the influence of different light qualities and 6-benzyladenine (BA) concentration in a medium on the leaf response of multiplied Gerbera jamesonii Bolus ex Hook. f.‘Big Apple’ shoots. Three different light-emitting diode (LED) spectra—100% blue (B), 100% red (R) and red and blue mixture (7:3, RB)—were used, and a fluorescent lamp was used as a control (Fl). Concentrations of BA in Murashige and Skoog (MS) medium were 1, 2.5 and 5 µM. Leaves developed under 100% blue light had a lower frequency of stomata and a smaller area as compared with those from plants exposed to light with red in spectrum. Under 100% red light, the leaf area and the frequency of stomata increased along with growing concentration of BA in the medium. The thickest mesophyll was spotted in the cross-section of leaves exposed to the blue LED light. Leaves developed under the 100% red light had the thinnest mesophyll layers. Increasing concentration of BA in the medium resulted in enhanced leaf blade thickness. The cross-section of leaf vascular bundles was only half of that in petioles. The leaves under the LED combinations had larger vascular bundles than those under fluorescent light. The highest level of photosynthetic pigments was noticed in the leaves grown under LED R and RB lights. Our study demonstrated that 2.5 µM BA and a mixture of blue and red light provided by LED improved leaf quality during multiplication of gerbera shoots.

Cloning without using any medium

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Submitted by Elsewhere on 2020-Nov-20 Fri 08:34

There are many different ways to carry out plant cloning: tissue culture, plugs, rockwool, and so on. At the same time, more innovative technologies have been coming up over time, which made cloning much easier. One of the most interesting is aeroponic cloning, which has many benefits for large-scale growers, as it allows them…

📄 Method of Silicon Application Affects Quality of Strawberry Daughter Plants during Cutting Propagation in Hydroponic Substrate System

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Submitted by Elsewhere on 2020-Nov-11 Wed 09:00

The beneficial effects that silicon (Si) has on plant growth as well as resistance to biotic and abiotic stresses have been well documented for many crops in recent years. However, few studies focus on the effects of Si on plant growth during the propagation stage of strawberry (Fragaria × ananassa, Duchesne). This study was conducted to investigate the optimal method for Si application during the cutting propagation of strawberry in soilless cultivation. Strawberry mother plants were supplied with Si through foliar spray, runner spray, or root drench before the cutting propagation, then half of the daughter plants in each treatment received continued Si supply through foliar spray or through root drench after the cutting propagation. The results showed that the plant height, petiole length and diameter, leaf length and width, shoot fresh and dry weights, and root fresh and dry weights were significantly increased by Si root drench both before and after the cutting propagation. Moreover, plants absorbed more Si by drench than by spray, and the absorbed Si was only able to be transported from the root to the shoot, and from the mother plant to the daughter plant. Further research found that the chlorophyll fluorescence parameter of the maximum quantum efficiency of the photosystem II (Fv/Fm) and the activities of superoxide dismutase, ascorbate peroxidase, and guaiacol peroxidase were also enhanced while catalase did not change under a high temperature stress in strawberry treated with Si before and after cutting propagation by root drench. Thus, Si application by drenching the roots during the whole propagation period is recommended to increase the quality of the strawberry daughter plants in soilless cultivation.

Doubling down on biosecurity

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Submitted by Elsewhere on 2020-Oct-23 Fri 13:28

After completing a successful summer planting season, Proplant Propagation announces another 5 acre expansion, to be completed in early 2021. In preparation for the expansion the company has doubled down on their biosecurity efforts with the completion of a new, larger and more automated building for cleaning trolleys and…

Concrete floors versus tables

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Submitted by Elsewhere on 2020-Oct-14 Wed 13:03

At the recent Grodan seminar, the second speaker was Roelands Plant from Ontario, a large propagator. The first speaker was Marta Streminski, and the third and last one was Thomas Douma. Read more about them in this previous article. Roelands Plant is a large propagator in Ontario, Canada. Edward Thoren, head grower with the company,…

Two million disease-resistant potato tubers produced, using tissue culture technology

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Submitted by Elsewhere on 2020-Oct-02 Fri 08:51

Pakistan Agricultural Research Council (PARC) Chairman Dr Muhammad Azeem Khan recently made a statement saying that in Pakistan, tissue culture technology is now starting to be used widely for large-scale plant multiplication, giving a science-based solution for plant propagation, disease elimination and…

'These tomatoes are tough for a propagator, as they grow like crazy'

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Submitted by Elsewhere on 2020-Sep-25 Fri 10:08

In the video below you can see a huge lot of single headed tomatoes, two per block. Propagation Solutions writes that they are tough for a propagator, as in September they grow like crazy.  These tomatoes had a super generative growth from the beginning, which worked out well.  Source: Propagation Solutions.