Seed quality attributes in seedling production of Norway spruce (&lt;i&gt;Picea abies&lt;/i&gt; (L.) Karst.)

Himanen, Katri

doi:10.14214/df.261

Cited by 3 publications

(1 citation statement)

References 97 publications

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“…Regarding the expediency of separating seeds by quantitative characteristics, some scientists consider the elimination of whole genotypes [63,64] at the same time, so the opinion about the effect on the exclusion of certain maternal genotypes is not so much of separation operations as of a wide range of annual variations in the genetic structure of seeds that are produced at permanent forest seed sites [65]. The results given above show that the seed size itself is not related to ground germination, but that it may be related to it through genetic lines.…”

Section: Discussionmentioning

confidence: 99%

The Root Collar Diameter Growth Reveals a Strong Relationship with the Height Growth of Juvenile Scots Pine Trees from Seeds Differentiated by Spectrometric Feature

Novikova,

Tylek,

Mastrangelo

et al. 2023

Forests

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This study is intended for forest owners considering options to increase the efficiency of the production of forest seedlings in automated nurseries. In the short rotation technology of the Scots pine (Pinus sylvestris L.), the production of seedlings was integrated in the process of grading seeds by spectrometric features, followed by the fall outplanting of containerized seedlings to a restorable post-pyrogenic site. There are studies of the spectrometric effect grading viable seeds, but a negligible amount of testing has been conducted on the seedling’s field performance from these seeds. It was very important for us to evaluate the morphogenesis of juvenile Scots pine trees in relation to the change in morphological features—increase in root collar diameter (RCD-increment) and increase in stem height (SH-increment)—in the second and third growing season from the field outplanting. To determine the nature of the interaction between independent (RCD increase), dependent (SH-increment), and categorical (seed spectrometric categories and timespans) variables, a regression analysis was performed using the R statistical software. All coefficients of the linear models are statistically significant at the 1% significance level, and all are positively associated with an increase in seedling height. On average, a RCD increment by 0.1 cm causes a SH-increment by 0.72 ± 0.16 cm (p = 9.779 × 10−6). In addition, in 2020, compared to 2019, the SH-increment was 5.46 ± 0.37 cm (p < 0.001). The seeds’ differentiation into spectrometric categories is strongly correlated with the stem height increment (p < 0.001). Thus, in order to improve the plant propagation protocol, it seems advisable to first condition the seeds in accordance with the spectrometric feature, and to then apply a coating (by pelleting or encapsulating) in order to improve the storage and seeding conditions. For a medium-term assessment of the short rotation technology with an integrated seed spectrometric grading in the future, the morphogenesis of Scots pine trees at 5, 7 and 10 growing seasons from the seedlings field outplanting is controlled.

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Section: Discussionmentioning

confidence: 99%

The Root Collar Diameter Growth Reveals a Strong Relationship with the Height Growth of Juvenile Scots Pine Trees from Seeds Differentiated by Spectrometric Feature

Novikova,

Tylek,

Mastrangelo

et al. 2023

Forests

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Production of Norway spruce embryos in a temporary immersion system (TIS)

Välimäki

Paavilainen

Tikkinen

et al. 2020

In Vitro Cell.Dev.Biol.-Plant

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Somatic embryogenesis has already been used for Norway spruce (Picea abies (L.) Karst) embling production on a laboratory scale, but automation is needed to increase efficiency and reduce costs. One option to scale up production is mass production in bioreactors. In a series of experiments, a pro-embryogenic mass was propagated using Plantform temporary immersion system bioreactors, and the effect of different aeration cycles, support pad materials, and post-maturation treatments (rinsing and desiccation) on the embryo yield and embling survival after 4 to 6 mo in a greenhouse was tested. Three genotypes were used to test each treatment. The best aeration frequency was 20 min every 4 h, while a lower or higher frequency did not generally improve embryo production. Filter paper on plastic netting was the best support pad material in terms of usability and embryo production (varying from 177 ± 20 to 696 ± 109 per g pro-embryogenic mass). The separation of the embryos from the undeveloped cell mass by rinsing with sterile water resulted in reduced survival of the emblings. Desiccation treatment on nested plates with the embryos on the inner plate with or without filter paper improved their survival. Bioreactors were laborious to prepare, load, and clean. Improvements in embryo production can be achieved by optimizing the process, but bioreactors based on the requirements of somatic embryogenesis are needed to enable their use in the mass production of Norway spruce emblings.

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Studying the spectrometric features of forest seeds to improve sowing qualities: a retrospective cluster analysis of the scientific landscape trends

Novikova,

Novikov,

Petrishchev

2024

Forestry Engineering Journal

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Forest seeds spectral data in the visible and infrared regions of electromagnetic radiation lengths quite effectively differentiate the origin, viability, types of seeds, their infestation with pests and diseases, the ability to absorb and lose water. The search for a method of seed testing that is both experimentally simple, fast and effective for predicting germination is necessary to increase the energy efficiency of forest nurseries in the production of planting material. The retrospective references systematization (N = 55, 1998-2023, terms [Scholar Query = seeds* AND (spectr* OR optic*) (properties OR features) AND analysis]) into clusters was carried out on the basis of eight performance criteria represented by rank variables. The level of similarity and difference between clusters is determined by the method of the most distant neighbors with the grouping of data by the square of the Euclidean distance. The most distant criterion from other criteria is the level of invasiveness of testing (the square of the Euclidean distance is 25, p < 0.05). Correlation analysis of nonparametric criteria indicates a direct strong interaction between the level of financial and organizational costs (Spearman coefficient ρ = 0.77; p = 0.0008), time costs and low machine learning capability (ρ = 0.725; p = 0.0008). In the future, it is planned to periodically supplement the set of systematic data to obtain an objective assessment of seed testing methods, as well as using a seed passport to evaluate the relationship of RGB spectral data of more than 1 000 individual seeds with early growth of seedlings in a post-pyrogenic experimental site of the forest landscape of the Voronezh region by example (Pinus sylvestris L. var. Negorelskaya).

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Seed quality attributes in seedling production of Norway spruce (<i>Picea abies</i> (L.) Karst.)

Cited by 3 publications

References 97 publications

The Root Collar Diameter Growth Reveals a Strong Relationship with the Height Growth of Juvenile Scots Pine Trees from Seeds Differentiated by Spectrometric Feature

The Root Collar Diameter Growth Reveals a Strong Relationship with the Height Growth of Juvenile Scots Pine Trees from Seeds Differentiated by Spectrometric Feature

Production of Norway spruce embryos in a temporary immersion system (TIS)

Studying the spectrometric features of forest seeds to improve sowing qualities: a retrospective cluster analysis of the scientific landscape trends

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