scholarly journals Cytogenetic variability of seed progeny from trees of weeping birch (Betula pendula Roth), growingin different ecological conditions

2009 ◽  
Vol 7 (1) ◽  
pp. 30-40
Author(s):  
Valeriy G Artyukhov ◽  
Vladislav N Kalaev ◽  
Svetlana S Karpova
Keyword(s):  
Betula Pendula ◽  
Seed Progeny ◽  
Ecological Conditions ◽  
Betula Pendula Roth ◽  
Weeping Birch ◽  
Selection Of

The study of cytogenetic characteristics of weeping birch (Betula pendula Roth) seed progeny was carried out on anthropogenically polluted territories of Voronezh city, and on ecologically «clean» territory. Four groups of seedlings on each territory were revealed. They are «mutable», «low-mutable» and two intermediate groups. The description of cytogenetic characteristics of these groups was made. The results of the study may be used for recommendation on selection of maternal trees producing seeds resistant to unfavorable conditions of the environment.

scholarly journals USE OF PHYSIOLOGICAL-BIOCHEMICAL, CELLULAR AND SUB-CELLAR CHARACTERISTICS OF BETULA PENDULA AS MARKERS OF SEED GERMINATION AND MONITORING TERRITORY POLLUTION

2019 ◽  
Vol 16 (32) ◽  
pp. 1034-1044
Author(s):  
T. V. VOSTRIKOVA ◽  
O. A. ZEMLYANUKHINA ◽  
V. N. KALAEV
Keyword(s):  
Seed Germination ◽  
Total Protein ◽  
Soluble Protein ◽  
Betula Pendula ◽  
Anthropogenic Pollution ◽  
Total Soluble Protein ◽  
Anthropogenic Pressure ◽  
Seed Progeny ◽  
Germination Ability ◽  
Weeping Birch

The amount of total soluble protein cytogenetic indices, germination ability in the seed progeny of Betula pendula in areas with different levels of anthropogenic pollution was studied. The seed progeny of Betula pendula has an increased germination ability and total protein in areas with low pollution levels as compared to the control group (seeds collected in the ecologically clean territory) and to the same parameters for the areas with high levels of anthropogenic pressure. A high positive correlation was established between seed germination and the amount of total soluble protein. The parameter “amount of total protein” is characterized as a marker of seed germination, which determines the possibility of their germination. Cytogenetic parameters (mitotic activity, percentage ratio of cell number at mitosis stages, level of mitosis pathologies, level of cells with persistent nucleoli at metaphase - anaphase mitosis stage) of seed seedlings of weeping birch were studied as marker signs of anthropogenic pollution of territories. Relations between cytogenetic and biochemical characteristics were found. The impact of the environment, caused mainly by heavy metal pollution, on birch trees and their seed progeny, can be defined as hormesis by biochemical and cytogenetic indices. A comprehensive study of cytogenetic and biochemical parameters can allow a quick and adequate evaluation of the seed quality of unknown origin which is especially important for plant industry and forestry as it allows selecting stable planting material and for the collection of material for pharmacognostic purposes in areas with different ecological pressure. Determining cytogenetic indices and the amount of total protein allows forecasting the germination capacities and germination abilities of the seeds of the weeping birch.

Phytoindication of the environmental conditions by the degree of leaves damage of Betula pendula Roth

2019 ◽  
Vol 24 (2) ◽  
pp. 66-74
Author(s):  
Kristina Krupey ◽  
◽  
Katerina Obruch ◽  
A. Mihailichenko ◽  
◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Betula Pendula ◽  
Betula Pendula Roth

Оценка содержания металлов в надземных органах березы повислой в условиях полиметаллического загрязнения окружающей среды

2010 ◽  
pp. 21-25
Author(s):  
Р. Х. Гиниятуллин ◽  
Алексей Юрьевич Кулагин
Keyword(s):  
Betula Pendula ◽  
Betula Pendula Roth

Представлены материалы по оценке относительного жизненного состояния и аккумуляции металлов различными надземными органами березы повислой (Betula pendula Roth.) в условиях технического загрязнения Стерлитамакского промышленного центра (СПЦ). Показано, что насаждения березы в СПЦ способны депонировать техногенные металлы в этих условиях.

scholarly journals Towards Silviculture Guidelines to Produce Large-Sized Silver Birch (Betula pendula Roth) Logs in Western Europe

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 599
Author(s):  
Héloïse Dubois ◽  
Hugues Claessens ◽  
Gauthier Ligot
Keyword(s):  
Betula Pendula ◽  
Western Europe ◽  
Forest Health ◽  
Silver Birch ◽  
Growth Potential ◽  
Betula Pendula Roth ◽  
Crown Diameter ◽  
Birch Trees ◽  
Timber Tree ◽  
Northeastern France

Forest health problems arising from climate change, pests and pathogens are a threat to the main timber tree species. As a result, silver birch (Betula pendula Roth) has become a precious asset for meeting oncoming forestry challenges in western Europe. However, silviculture guidelines to produce high-value birch logs in this region are lacking. Producing large-sized birch trunks requires crown release, i.e., removing crown competitors around selected target trees. These interventions are currently seldom carried out or else too late when the growth potential of the trees has already diminished. This study set out to ascertain the diameter at breast height (dbh) that could be reached by crown-released birch, determine dbh-associated crown diameters, and further characterize the gain obtained from early crown release on birch dbh growth. We measured 704 birch trees that had undergone crown release in 38 naturally regenerated pure birch stands in southern Belgium and in northeastern France. We then evaluated the variation in stem and crown diameter, and analyzed increments in response to the earliness of the interventions in three subsamples, also compared with control target birch. We found that trees with a dbh of 50 cm could be grown within 60 years. Based on crown diameter, to produce 40, 50 and 60 cm dbh trunk, the distance required between target birch trees at the end of the rotation was around 8, 10 and 12 m. With no intervention and in ordinary dense birch regenerations, the dbh increment was found to decline once the stand reached age 4–7 years. Starting crown release in stands aged 4–5 years can double the dbh increment of target trees and provide a continual gain that may last up to 20 years. When birch crowns are released after 9–12 years, it may already be too late for them to recover their best growth rate. Our contribution should help complete emerging guidelines in support of birch silviculture development.

The seasonal activity and the effect of mechanical bending and wounding on the PtCOMT promoter in Betula pendula Roth

2007 ◽  
Vol 26 (8) ◽  
pp. 1205-1214 ◽  
Author(s):  
Heidi Tiimonen ◽  
Hely Häggman ◽  
Chung-Jui Tsai ◽  
Vincent Chiang ◽  
Tuija Aronen
Keyword(s):  
Betula Pendula ◽  
Seasonal Activity ◽  
Betula Pendula Roth ◽  
Mechanical Bending
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