Micropropagated silver birches (Betula pendula) in the field – performance and clonal differences

Viherä‐Aarnio, Anneli; Velling, Pirkko

doi:10.14214/sf.576

Cited by 19 publications

(9 citation statements)

References 28 publications

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“…The plantlets showed the 100% survival rate (data not shown). The successful establishment of plantlet in this study was due to their micropropagation origin that is contrary to the report for Betula pendula (45). Some plantlets grow faster and exhibited higher values for all the parameters evaluated than the donor plant (see Table 3).…”

Section: Discussioncontrasting

confidence: 85%

In VitroFlowering and Micropropagation ofHyptis suaveolens(Linn.) Poit.—An Important Medicinal Herb

Mandal

2013

Journal of Herbs, Spices & Medicinal Plants

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An optimized protocol for micropropagation of Hyptis suaveolens was developed. A 100% shoot regeneration frequency and 16.9 shoots per node explant were achieved on Murashige and Skoog medium (MS) containing 1.0 mg.L −1 N6-benzylaminopurine (BAP) and 0.5 mg.L −1 gibberellic acid (GA 3 ). Node explants of microshoots could be induced for proliferation of a large number of harvestable shoots on the same medium. The shoots developed in vitro inflorescences and 8.5 flowers per shoot on MS medium supplemented with 2.0 mg.L −1 indole-3-butyric acid (IBA). Rooting of microshoots was induced on MS medium containing 1.0 mg.L −1 indole-3-acetic acid (IAA). The plantlets were acclimatized, transplanted to natural soil, and evaluated. The regeneration protocol may provide a means of ex situ germplasm conservation and for research of active constituents.

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Section: Discussioncontrasting

confidence: 85%

In VitroFlowering and Micropropagation ofHyptis suaveolens(Linn.) Poit.—An Important Medicinal Herb

Mandal

2013

Journal of Herbs, Spices & Medicinal Plants

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“…The negative effect of cyclophysis due to different biological ages of rootstock and scion [20][21][22][23] appeared insubstantial, as indicated by the productivity of the plantation. Similarly, a weak effect of cyclophysis on growth and survival of vegetatively propagated silver birch has been shown in boreal conditions [24,25]. Still, grafts might have lower branchiness and branch thickness [26].…”

Section: Discussionmentioning

confidence: 92%

Genetic Parameters of Growth Traits and Stem Quality of Silver Birch in a Low-Density Clonal Plantation

Zeltiņš

Matisons

Gailis

et al. 2018

Forests

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Silver birch (Betula pendula Roth) is productive on abandoned agriculture land, and thus might be considered as an option for profitable plantation forestry. Application of the most productive genotypes is essential. However, information about genetic gains in low-density plantations is still lacking. A 40-year-old low-density (400 trees ha −1 ) plantation of 22 grafted silver birch plus-tree clones growing on former agricultural land in the central Latvia was studied. Although grafted plantations are not common in commercial forestry, the trial provided an opportunity to assess genetic parameters of middle-aged birch. The plantation that had reached the target diameter for final harvest (DBH (diameter at breast height) = 27.7 ± 5.5 cm) had an 85% survival rate, and stemwood productivity was 5.25 m 3 ha −1 year −1 . Still, rootstock × scion interaction and cyclophysis might have caused some biases. Broad-sense heritability (H 2 ) ranged from 0.02 for probability of spike knots to 0.40 for branch angle. Estimated H 2 for monetary value of stemwood was 0.16. In general, the correlations between growth and stem quality traits were weak, implying independent genetic control, though branchiness strongly correlated with diameter at breast height. The monetary value of stemwood strongly correlated with productivity traits. The observed correlations suggested that productivity and stem quality of birch might be improved simultaneously by genetic selection.

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“…As a result, levels of genetic variation in silver birch are high within populations while the differentiation among populations is very low (Eriksson et al , Rusanen et al ). A previous study (Viherä‐Aarnio and Velling ) have shown that micropropagated silver birch plants do not differ from the seed‐born plants in growth characteristics or resistance to herbivores. Each particular genotype combination was replicated 2–6 times within the experimental area (Supplementary material Appendix 1 Table A1).…”

Section: Methodsmentioning

confidence: 94%

Additive and non‐additive effects of birch genotypic diversity on arthropod herbivory in a long‐term field experiment

Barton

Валкама

Vehviläinen

et al. 2014

Oikos

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Herbivores are important drivers of plant population dynamics and community composition in natural and managed systems. Intraspecific genetic diversity of long‐lived plants like trees might shape patterns of herbivory by different guilds of herbivores that trees experience through time. However, previous studies on plant genetic diversity effects on herbivores have been largely short‐term. We investigated how tree genotypic variation and diversity influence herbivory of silver birch Betula pendula in a long‐term field experiment. Using clones of eight genotypes, we constructed experimental plots consisting of one, two, four or eight genotypes, and measured damage by five guilds of arthropod herbivores twice a year over three different years (four, six and nine years after the experiment was established). Genotypes varied significantly for most types of herbivore damage, but genotype resistance rankings often shifted over time, and none of the clones was more resistant than all others to all types of herbivores. At the plot level, birch genotypic diversity had significant positive additive effect on leaf rollers and negative non‐additive effects on chewing herbivores and gall makers. In contrast, leaf‐mining and leaf‐tying damage was not influenced by birch genotypic diversity. Within diverse plots, the direction of genotypic diversity effects varied depending on birch genotype, some having lower and some having higher herbivory in mixed stands. This research highlights the importance of long‐term studies including different feeding guilds of herbivores to understand the effects of plant genetic diversity on arthropod communities. Different responses of various feeding guilds to genotypic diversity and shifts in resistance of individual genotypes over time indicate that genotypic mixtures are unlikely to result in overall reduction in herbivory over time.

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Micropropagated silver birches (Betula pendula) in the field – performance and clonal differences

Cited by 19 publications

References 28 publications

In VitroFlowering and Micropropagation ofHyptis suaveolens(Linn.) Poit.—An Important Medicinal Herb

In VitroFlowering and Micropropagation ofHyptis suaveolens(Linn.) Poit.—An Important Medicinal Herb

Genetic Parameters of Growth Traits and Stem Quality of Silver Birch in a Low-Density Clonal Plantation

Additive and non‐additive effects of birch genotypic diversity on arthropod herbivory in a long‐term field experiment

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