scholarly journals Quality of pedunculate oak Provenances in Bosnian–Herzegovinian provenance test based on branching angle and stem form

Forestist ◽  
2020 ◽  
Vol 70 (2) ◽  
pp. 95-104
Author(s):  
Mirzeta Memišević Hodžić ◽  
◽  
Dalibor Ballian ◽  
Keyword(s):  
Pedunculate Oak ◽  
Stem Form ◽  
Provenance Test ◽  
Branching Angle

Growth and management of mixed Pinus sylvestris - Quercus robur stands in Flanders, Belgium

1993 ◽  
Vol 58 ◽  
Author(s):  
D. Maddelein ◽  
J. Neirynck ◽  
G. Sioen
Keyword(s):  
Pinus Sylvestris ◽  
Natural Regeneration ◽  
Quercus Robur ◽  
Good Growth ◽  
Pedunculate Oak ◽  
Selection System ◽  
Management Options ◽  
Stand Management ◽  
Pine Stands

Mature  Scots pine (Pinus sylvestris  L.) stands are dominating large parts of the Flemish forest area. Broadleaved  species regenerate spontaneously under this pine canopy. This study studied  the growth and development of two planted pine stands with an older natural  regeneration, dominated by pedunculate oak (Quercus  robur L.), and discussed management options for  similar stands.     The results indicated a rather good growth of the stands, with current  annual increments of 5 m3.ha-1.yr-1. The pine overstorey is growing into valuable sawwood  dimensions, while the broadleaved understorey slowly grows into the  upperstorey. The quality of the regeneration is moderate but can be improved  by silvicultural measurements (pruning, early selection).     In both stands, an interesting (timber production, nature conservation)  admixture of secondary tree species is present in the regeneration. Stand  management is evolving from the classical clearcut system towards a  combination of a type of selection and group selection system.

scholarly journals Nesting Preferences for Two Woodpecker Species (Dendrocopos Major and Dendrocopos Medius) in Comana Forest, Southern Romania/ Preferințele de cuibărit la două specii de ciocănitori (Dendrocopos Major şi Dendrocopos Medius), în Pădurea Comana, Sudul României

2015 ◽  
Vol 57 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Ioana Damoc ◽  
Tiberiu Sahlean ◽  
Roxana Ion ◽  
Mihaela Ion ◽  
Lotus Elena Meşter
Keyword(s):  
Food Sources ◽  
Pedunculate Oak ◽  
Large Trees ◽  
Nesting Sites ◽  
Turkey Oak ◽  
Nest Height ◽  
Middle Spotted Woodpecker ◽  
Dendrocopos Major ◽  
Nesting Preferences

Abstract The main goal of this study is to get a better insight of the habitat requirements for the Great- and Middle Spotted Woodpeckers. Woodpeckers are forest specialists, threatened all over Europe mainly by the loss of forest habitats and also by the loss in quality of the habitat by reducing the food sources and nesting sites. Both species showed a strong preference for oaks, lime, large trees and dead wood for nesting, but Middle Spotted Woodpecker proved to be more selective in terms of tree species. Nest-height was influenced by tree diameter. Both species have the same nesting preferences for Turkey oak, lime and Pedunculate oak, in a Quercetum farnetto-cerris type of forest. The orientation of the nest hole on the tree was mainly NE-E-SE for Middle Spotted Woodpecker and N-NE-E for Great Spotted Woodpecker.

scholarly journals Dark-chilling of Seedlings Affects Initiation and Morphology of Broccoli Inflorescence

2013 ◽  
Vol 41 (1) ◽  
pp. 213 ◽  
Author(s):  
Aneta GRABOWSKA ◽  
Agnieszka SĘKARA ◽  
Monika BIENIASZ ◽  
Edward KUNICKI ◽  
Andrzej KALISZ
Keyword(s):  
Microscopic Analysis ◽  
Flower Buds ◽  
Uniform Size ◽  
Sowing Time ◽  
Regular Form ◽  
Plant Ontogeny ◽  
Branching Angle ◽  
The University ◽  
And Control

The constant supply of broccoli heads for a vegetable market can be kept by the differentiation of sowing time and the age of seedlings. Dark-chilling of young seedlings can also modify the time of transplanting, subsequent plant development, yield and inflorescence quality. The aim of the present study was to analyze the influence of seedling dark-chilling on the inflorescence initiation and the morphological quality of broccoli heads. The experiment was carried out at the University of Agriculture in Krakow (South Poland) in the years 2009 and 2010, with broccoli (Brassica oleracea L. var. italica Plenck) medium late cultivar ‘Monaco’ F1. The examined factors were the age of seedlings (4-, 6-, 8-, and 10-week-old) and dark-chilling (2°C/2 weeks and non-chilled control). Microscopic analysis of the apex sections was performed to determine the time of the inflorescence differentiation in chilled and non-chilled seedlings of different age. Chosen morphological features of the mature heads were also described as depended on age and chilling of seedlings. The inflorescence initiation was observed between 4 and 6 week of the plant ontogeny. Especially 4-week-old seedlings, chilled by two weeks, were more advanced in the generative development in comparison to non-chilled control. Low temperature applied in the seedling stage did not cause the head buttoning. Inflorescences developed by broccoli planted from 4 and 6-week-old seedlings, both chilled and control, were characterized by the best visual quality, determined by a convex head shape, tight branching angle, small and uniform size and regular form of flower buds. Chilling of oldest, 8- and 10-week-old seedlings negatively affected the inflorescence quality, through planed and spread shape of heads and non-uniform shape of flower buds.

scholarly journals Acorn size influence on the quality of pedunculate oak (Quercus robur L.) one-year old seedlings

REFORESTA ◽  
2019 ◽  
Author(s):  
Jovana Devetaković ◽  
◽  
Marina Nonić ◽  
Bojan Prokić ◽  
Vladan Popović ◽  
...  
Keyword(s):  
Quercus Robur ◽  
Pedunculate Oak ◽  
Acorn Size ◽  
One Year

scholarly journals Effect of the density of transplants in reforestation on the morphological quality of the above-ground part of European beech (Fagus sylvatica L.) six years after planting

2013 ◽  
Vol 61 (6) ◽  
pp. 1703-1713 ◽  
Author(s):  
Kateřina Houšková ◽  
Oldřich Mauer
Keyword(s):  
Forest Regeneration ◽  
Initial Density ◽  
European Beech ◽  
Canopy Closure ◽  
Stem Form ◽  
Spacing Pattern ◽  
Fagus Sylvatica L ◽  
Plantation Density ◽  
Ground Part

Quality of the above-ground part of European beech planted at different densities and spacing patterns for the purpose of artificial forest regeneration was monitored 3, 4 and 6 years after planting. The initial numbers of beech transplants were 5,000 pcs.ha−1, 10,000 pcs.ha−1, 15,000 pcs.ha−1 and 20,000 pcs.ha−1. The spacing pattern of transplants was either square or rectangular nearly in all variants: 1.4 × 1.4 m, 2 × 1 m, 1 × 1 m, 0.8 × 0.8 m, 1 ×0.65 m, 0.7 × 0.7 m and 1 × 0.5 m. Conclusions following out from the research are as follows: 1. neither the chosen density of transplants nor their spacing pattern had an essential influence on the after-planting loss or damage of trees; 2. through the planting of larger-diameter transplants it is possible to achieve canopy closure more rapidly as well as faster growth of the plantation; these beech plants keep the edge in growth and quality even 6 years after planting; 3. the higher is the beech plantation density, the less individuals occur in such a plantation with inappropriate stem form; 4. beech plants of the worst quality were found on plots with the lowest initial density of transplants (5,000 and 10,000 pcs.ha−1), yet the number of promising trees was sufficient even there. Thus, none of the experimental numbers of transplants per hectare or spacing arrangements of the European beech transplants can be claimed as inappropriate; however, further monitoring of the plots is necessary.

scholarly journals Promising white poplar (Populus alba L.) clones in sandy ridges between the rivers Danube and Tisza in Hungary

2008 ◽  
Vol 14 (1-2.) ◽  
Author(s):  
K. Rédei ◽  
Zs. Keserű
Keyword(s):  
Significant Role ◽  
Tree Species ◽  
Important Task ◽  
Growth And Yield ◽  
Populus Alba ◽  
Wood Production ◽  
White Poplar ◽  
Stem Form ◽  
Forested Area

White poplar is a native stand-forming tree species in Hungary, covering 3.1 per cent of the forested area. More than 70 per cent of the white poplar stands can be found on calcareous sandy sites in the Danube—Tisza region, so they play a significant role in the poplar management of this part of the country. The most important task ahead of Hungarian poplar growers is to improve the quality of poplar stands and plantations based on selecting new clones and cultivars. The growth and yield of four promising white poplar clones was evaluated on a marginal site in central Hungary. The clones `1-1 425-4' (Populus alba x Populus alba), and 11 758' (Populus alba Mosonmagyaróvár 124) seem to be suitable for wood production, while the 427-3' (Populus alba x Populus alba cv. Bolleana) and 422-9' (Populus alba x Populus grandidentata) clones (with decorative stem form) could be better used for tree lines and ornamental plantations.

Growth and Wood Quality Traits in a Dipteryx alata Vog. (Fabaceae) Progeny and Provenance Test

2021 ◽  
Author(s):  
T S Santos ◽  
K Martins ◽  
A V Aguiar ◽  
M J Baptista Filho ◽  
J R Menucelli ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Ex Situ Conservation ◽  
Wood Quality ◽  
Ex Situ ◽  
Quality Traits ◽  
Brazilian Cerrado ◽  
Stem Form ◽  
Provenance Test ◽  
Multiple Uses ◽  
Dipteryx Alata

Abstract Dipteryx alata Vog. presents an excellent economic potential because of its multiple uses. However, it is currently threatened as a result of the degradation of the biome in which it occurs, the Brazilian Cerrado. Therefore, our goal was to provide subsidies for future breeding and ex situ conservation programs of D. alata. We evaluated genetic variation in growth, stem form, and wood quality traits in a progeny and provenance test planted in a random complete block design. The traits were measured in 37-year-old trees. Significant effect for provenance was obtained for all evaluated traits except bifurcation, but progeny effect was significant only for acoustic wave velocity (AWV). The estimates of individual narrow sense heritability were of low magnitude for all traits except AWV (0.24 ± 0.09). Eleven groups were formed based on Mahalanobis genetic distance with 83.1% of progenies allocated to one group. Dipteryx alata has genetic variability between progenies and provenances that can be explored to obtain genetic gain, especially for AWV. We also recommend the use of multi-trait selection index to obtain gains for both growth and wood quality traits. Controlled pollination between individuals from different progeny groups would increase variability in next generation breeding. Study Implications Dipteryx alata is a tree species that presents multiple uses and is threatened as a result of the devastation of the Brazilian Cerrado. We evaluated genetic variation in growth, stem form, and wood quality traits in a progeny and provenance test planted 37 years ago. We found genetic differences among progenies only for the wood quality trait, which can be explored to obtain genetic gains. The test is better suited for ex situ conservation, and the infusion of novel sources of germplasm is necessary for future generations of breeding.

The effect of birch removal on growth and quality of pedunculate oak in a 21-year-old mixed stand established by row planting

2016 ◽  
Vol 364 ◽  
pp. 165-172 ◽  
Author(s):  
Mateusz Liziniewicz ◽  
Tadeusz Andrzejczyk ◽  
Stanisław Drozdowski
Keyword(s):  
Mixed Stand ◽  
Pedunculate Oak

scholarly journals Performance and genetic variation in a provenance test of Araucaria cunninghamii

2021 ◽  
Vol 56 ◽  
Author(s):  
Wanderley dos Santos ◽  
Ananda Virginia de Aguiar ◽  
Bruno Marchetti de Souza ◽  
Daniela Araujo ◽  
Celso Machado ◽  
...  
Keyword(s):  
Genotypic Variation ◽  
Seed Orchard ◽  
Wood Production ◽  
Stem Form ◽  
Mean Values ◽  
Genetic Gains ◽  
Provenance Test ◽  
The Mean ◽  
Selection Intensities ◽  
Araucaria Cunninghamii

Abstract: The objective of this work was to assess the genetic variability of Araucaria cunninghamii in a provenance test and to estimate the genetic gains in its wood production, based on different selection intensities. The trial was established in Luís Antônio, in the state of São Paulo, Brazil, using open-pollinated seed from Queensland, Australia. The experimental design used was a randomized complete block with six replicates, and four plants per plot. Diameter at breast height (DBH), stem form, and survival were measured at 29 years after planting. Significant differences were detected among provenances. The coefficient of genotypic variation between provenances was high (60%) for DBH and stem form. The mean values for DBH and stem form were 23.21 cm and 4.50, respectively. The provenances Langkelly Creek, Brooweena L.A., Yarraman, and St. Agnes showed the best performance for DBH, and Imbil Seed Orchard, Brooweena L.A, St. Agnes, St. John, and Yarraman, for stem form. Genetic gains ranged from 0.5 to 24.8% for DBH, and from 0.9 to 3.5% for stem form.

scholarly journals Assessment of growth and productivity of Scots pine provenance tests in the Arkhangelsk region in 39-year

2021 ◽  
Author(s):  
А.В. Чупров ◽  
Е.Н. Наквасина ◽  
Н.А. Прожерина
Keyword(s):  
Scots Pine ◽  
Arkhangelsk Region ◽  
Test Region ◽  
Provenance Test ◽  
Assessment Approach ◽  
Forested Areas ◽  
Grade Ii ◽  
End Of Grade ◽  
First Time

Впервые для региона изучены выживаемость, рост и продуктивность климатипов сосны обыкновенной в 39-летних географических культурах государственной сети (Плесецкий район Архангельской области). Прослежены особенности перераспределения климатипов в коллекции, отобраны лучшие потомства для использования для лесовосстановления в пределах региона испытания. Установлено, что северные потомства (северная и средняя подзоны тайги), отличающиеся в I классе возраста высокой приживаемостью, во II классе возраста начали процесс дифференциации, который привел к снижению показателя почти в два раза. К концу II класса возраста наблюдается выравнивание потомств климатипов по высоте, при сохранении различий, связанных с происхождением, по диаметру. Наиболее крупные диаметры стволов имеют южнотаежные потомства, а также из северной подзоны смешанных лесов, отличающиеся самыми низкими показатели приживаемости и качеством стволов. Установлена прямая зависимость показателя Н/Д с приживаемостью, связанная с усилением роста климатипов по диаметру, увеличением сбежистости и искривленности стволов, формированием низкоопущенных крон. Показано, что в культурах II класса возраста сохраняются значительные корреляционные связи показателей роста и приживаемости с географическими координатами и климатическими характеристиками мест исходных насаждений, в то время как с запасом связь теряется. С использованием подхода оценки в единицах стандартного отклонения отобраны лучшие по продуктивности (запасу) климатипы: местный плесецкий, пинежский, вологодский, а также климатипы из Карелии. Исходные насаждения этих потомств входят в ареал, ограниченный 60–65° с.ш., 36–44° в.д. Для использования в лесовосстановлении в Архангельской области следует полностью исключить использование семян из насаждений Урала и Сибири. На европейской части страны рекомендовать к использованию семена, заготовленные в трех лесосеменных районах: Южнокарельский, Двинско-Мезенский и Верхнедвинский, ограничив перемещение семян на расстояние не более 300 км. For the first time for the region, the survival, growth and productivity of scots pine climates in 39-year-old provenance test of the state network (Plesetsk district of the Arkhangelsk region) were studied. Features of climate redistribution in the collection were traced, the best offspring were selected for use for reforestation within the test region. It has been established that northern offspring (northern and middle subzones of the boreal forest), differing in the I grade of age with high livability, in the II grade of age began the process of differentiation, which led to a decrease in the indicator by almost half. By the end of grade II of age, the offspring of provenance are equalized in height, while maintaining differences related to origin in diameter. The largest diameters of trunks have southern offspring, as well as from the northern subzone of mixed forests, which differ in the lowest rates of survival and quality of trunks. Direct dependence of H/D index with livability is established, which is connected with increase of provenance growth by diameter, increase of escape and curvature of trunks, formation of low-lowered crowns. It has been shown that in cultures of the II class of age, significant correlation of growth and livelihood indicators with the geographical coordinates and climatic characteristics of the places of the initial plantations remains, while with the reserve the connection is lost. Using the assessment approach, in units of standard deviation, the best climates in terms of productivity (reserve) were selected: local mold, Pinezhsky, Vologda, as well as climates from Karelia. The initial plantations of these offspring are included in the range, limited to 60–65° N, 36–44° E. For use in reforestation in the Arkhangelsk region, the use of seeds from plantations of the Urals and Siberia should be completely excluded. In the European part of the country, recommend the use of seeds harvested in three forested areas: South Karelian, Dvinsk-Mezensky and Verkhnedvinsky, limiting the movement of seeds for a distance of not more than 300 km.

Sign in / Sign up

Export Citation Format

Share Document