scholarly journals Genetic variability of Araucaria angustifolia Bertol. initial growth: subsidy to the formation of seed orchards

2021 ◽  
Vol 31 (1) ◽  
pp. 310-332
Author(s):  
Dionatan Gerber ◽  
Eleandro José Brun ◽  
Larissa Regina Topanotti ◽  
Josângela De Jesus Ferreira ◽  
Douglas Anry Porrua ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Initial Growth ◽  
Araucaria Angustifolia ◽  
Seed Orchards

A Araucaria angustifolia Bertol. é uma espécie nativa do Brasil que, devido a ação antrópica ao longo de vários anos, a colocou sob ameaça de extinção. O objetivo do trabalho foi avaliar a variabilidade genética de Araucaria angustifolia com base em variáveis qualitativas e quantitativas de crescimento inicial em teste de procedências e progênies, selecionando-se aquelas com maior presença de superioridade como subsídio para a formação de pomares de sementes. Um teste de procedência e progênies foi instalado em casa de vegetação, utilizando-se as árvores matrizes de Guarapuava-PR e Palmeira-SC, de acordo com suas características biométricas e morfométricas. Cada matriz recebeu código de controle. As árvores matrizes foram avaliadas de acordo com as características dendrométricas e sanitárias, bem como as pinhas colhidas, quanto ao peso, volume e sanidade. Foram selecionadas 14 matrizes de Palmeira-SC e 10 matrizes de Guarapuava-PR. As pinhas de cada matriz selecionada foram avaliadas utilizando variáveis quantitativas. As sementes dessas pinhas, de acordo com a árvore matricial, foram separadas e utilizadas no experimento para avaliar a emergência das sementes e o crescimento inicial entre os genótipos. Todas as análises estatísticas foram realizadas pelos softwares GENES® e R Studio. Verificou-se que existe variabilidade genética entre as procedências e progênies para a maioria dos caracteres quantitativos estudados para a espécie e, portanto, a possibilidade de obter ganhos através da seleção entre e dentro das procedências. A seleção entre e dentro das procedências sugere a possibilidade de alcançar ganhos genéticos significativos, especialmente para caracteres de peso e diâmetro de pinhas, peso e número de sementes por pinha e crescimento das árvores.

Initial growth of Brazilian pine (Araucaria angustifolia) under equal soil volumes but contrasting rooting depths

Trees ◽  
2008 ◽  
Vol 22 (6) ◽  
pp. 835-841 ◽  
Author(s):  
Carla L. Korndörfer ◽  
Morgana Mósena ◽  
Lúcia R. Dillenburg
Keyword(s):  
Initial Growth ◽  
Araucaria Angustifolia

scholarly journals INITIAL DEVELOPMENT OF FIVE TREE SPECIES NATIVE TO THE ATLANTIC FOREST IN RECOMPOSITION PLANTATIONS IN SOUTHERN BRAZIL

FLORESTA ◽  
2020 ◽  
Vol 51 (1) ◽  
pp. 070
Author(s):  
Charles Rodrigo Belmonte Maffra ◽  
Felipe Turchetto ◽  
Edison Bisognin Cantarelli
Keyword(s):  
Atlantic Forest ◽  
Tree Species ◽  
Native Species ◽  
Forest Restoration ◽  
The Other ◽  
Initial Growth ◽  
Araucaria Angustifolia ◽  
Economic Returns ◽  
Initial Development ◽  
Schizolobium Parahyba

The regularization of rural properties in the molds of the New Forest Code depends on the silvicultural study of the native species of the Brazilian biomes. The objective of this study was to evaluate the initial growth of five native tree species of the Atlantic Forest, with a view to their use in forest restoration projects. The following species were produced in the nursery, planted in the field, and evaluated for performance: Araucaria angustifolia, Mimosa scabrella, Trichilia claussenii, Schizolobium parahyba, and Cordia trichotoma. These species were distributed in two different areas, based on the randomized block experimental design. In experiment 1, the species A. angustifolia, M. scabrella, and C. trichotoma were distributed in three randomized blocks, each composed of 11 plants of each species. In experiment 2, the species A. angustifolia, M. scabrella, T. claussenii, and S. parahyba were distributed in three randomized blocks, each one composed of five plants of each species. In general, S. parahyba and M. scabrella showed faster development than the other species and, in this regard, are promising candidates for forest areas constitution or reconstitution in which there is interest in obtaining economic returns in less time. Araucaria angustifolia and T. claussenii showed relatively low development, whereas C. trichotoma showed intermediate development in relation to the other species studied. Despite their differences in performance, all species proved to be suitable for use in reforestation, mainly in the region where the study was developed.

scholarly journals Are we narrowing genetic variability in seed orchards? An attempt to answer, based on the analysis of microsatellite DNA of grafts growing in Scots pine (Pinus sylvestris L.) seed orchard in the Forest District Susz

2015 ◽  
Vol 76 (3) ◽  
pp. 240-249
Author(s):  
Paweł Przybylski
Keyword(s):  
Genetic Variability ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Microsatellite Dna ◽  
Molecular Genetic ◽  
Seed Orchard ◽  
Dna Fragments ◽  
Forest Stands ◽  
Seed Orchards ◽  
Forest District

Abstract Scots pine (Pinus sylvestris L.) is the most common species in Poland’s forest stands. The mode of pine stands renovation requires that silviculture practitioners have continuous access to seed banks. Orchard-grown seeds are predicted to constitute an increasingly larger part of the average demand for pine seeds in Poland. Seed orchards, due to a limited number of maternal trees as well as the irregularity of their blooming and pollination, enhance the risk of genetic diversity reduction in planted forest stands. This is of particular importance in the context of dynamic climate change. Markers based on microsatellite DNA fragments are effective tools for monitoring genetic variability. In the present study, three different microsatellite DNA fragments were used: SPAC 12.5, SPAG 7.14 and SPAC 11.4. The main objective of this research was to study genetic variability in one of the biggest seed orchards in Poland, located in the Forest District Susz. The obtained results indicated heterozygosity loss within the orchard, proving the existence of specimen selection effects on genetic variability. Hence, it seems quite important to take account of molecular genetic variability of maternal trees in future breeding strategies.

scholarly journals Comparison of seedling growth among three co-occurring varieties of Araucaria angustifolia (Bertol.) Kuntze under greenhouse conditions

2010 ◽  
Vol 24 (2) ◽  
pp. 567-570 ◽  
Author(s):  
André Luiz Coutinho ◽  
Lúcia Rebello Dillenburg
Keyword(s):  
Seedling Recruitment ◽  
Lateral Roots ◽  
The Other ◽  
Initial Growth ◽  
Seed Color ◽  
Araucaria Angustifolia ◽  
Southern Brazil ◽  
Main Root ◽  
Positive Effects ◽  
Mass Allocation

Araucaria angustifolia (Bertol.) Kuntze is a tall, long-lived tree species, which grows as an emergent tree in the araucaria forests of southern Brazil. Four varieties have been described for this species, and three of them were selected for this study: "angustifolia" (the type variety), "caiova" and "indehiscens". These are co-occurring varieties that differ in external seed color and timing of seed maturation. The purpose of this study was to compare the initial growth of plants originated from seeds of these three varieties, in order to test the hypothesis that these varieties also differ in the initial growth of their seedlings. Seeds were collected from a single forest location, and 60 plants per variety were grown in pots for a period of 244 days. The "angustifolia" variety accumulated significantly more mass (both in shoot and root) than the other two, but the three varieties did not differ in mass allocation between shoot and root and between lateral roots and the main root. The greater growth of the type variety may help explain its greater natural abundance, since attaining a larger size will have positive effects on seedling recruitment and survival.

scholarly journals Genetic variability of Araucaria angustifolia in the Argentinean Parana Forest and implications for management and conservation

Trees ◽  
2018 ◽  
Vol 32 (4) ◽  
pp. 1135-1146 ◽  
Author(s):  
María Virginia Inza ◽  
Natalia Cristina Aguirre ◽  
Susana Leonor Torales ◽  
Norberto Manuel Pahr ◽  
Hugo Enrique Fassola ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Araucaria Angustifolia ◽  
Management And Conservation

scholarly journals INITIAL GROWTH PERFORMANCE OF VALUABLE TIMBER SPECIES IN SOUTHERN BRAZIL: Araucaria Angustifolia, Balfourodendron Riedelianum, AND Parapiptadenia Rígida

2019 ◽  
Vol 43 (4) ◽  
Author(s):  
Larissa Regina Topanotti ◽  
Dionatan Gerber ◽  
Oiliam Carlos Stolarski ◽  
Bruna Elisa Trentin ◽  
Carla Talita Pertille ◽  
...  
Keyword(s):  
Standard Error ◽  
Information Criterion ◽  
Coefficient Of Determination ◽  
Timber Species ◽  
Initial Growth ◽  
Araucaria Angustifolia ◽  
Crown Area ◽  
Total Height ◽  
Crown Volume ◽  
Collar Diameter

ABSTRACT The initial growth of three Brazilian native timber species in the city of Dois Vizinhos-PR, Brazil, was described - Araucaria angustifolia, Balfourodendron riedelianum, and Parapiptadenia rigida, using four non-linear mathematical models (Gompertz, Logistic, Logistic 4P, and Chapman-Richards). In the first 4 years after planting, information about collar diameter (mm), total height (m), crown height (m), and crown diameter (m) was obtained twice a year for 12 individuals per species. Crown area (m²) and crown volume (m³) were estimated. The growth in these four variables (collar diameter, total height, crown area, and crown volume) was projected using the models, and their fitting was assessed based on the values of the Akaike Information Criterion, the Bayesian Information Criterion, the standard error of estimate, and the coefficient of determination. The models generated excellent statistics for all parameters in all variables, with better statistics for collar diameter (coefficient of determination higher than 0.65 and standard error lower than 30%) and total height (coefficients of determination higher than 0.72 and standard error lower than 37%). Considering the three species, Parapiptadenia rigida showed the fastest growth in all variables (median of 70.97 mm for collar diameter, median of 4.475 m for total height, median of 10.35 m² for crown area, and median of 15.30 m³ for crown volume at 48 months). Longer monitoring periods in this and other experiments are recommended to characterize the growth of these three Brazilian native timber species to adequately describe their performance in timber and forest restoration projects.

scholarly journals INITIAL GROWTH OF Araucaria angustifolia ROOTSTOCK IN RESPONSE TO FERTILIZATION WITH NITROGEN, PHOSPHORUS AND POTASSIUM

FLORESTA ◽  
2018 ◽  
Vol 49 (1) ◽  
pp. 099 ◽  
Author(s):  
Valdeci Constantino ◽  
Antonio Carlos Vargas Motta ◽  
Julierme Zimmer Barbosa ◽  
Marcos Antonio Dolinski ◽  
Flavio Zanette ◽  
...  
Keyword(s):  
Initial Growth ◽  
Araucaria Angustifolia ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals GENETIC VARIABILITY IN JUVENILE CHARACTERS OF PROGENIES OF Apuleia leiocarpa

FLORESTA ◽  
2021 ◽  
Vol 51 (3) ◽  
pp. 547
Author(s):  
Queli Cristina Lovatel ◽  
Marcio Carlos Navroski ◽  
Tamara Rosa Gerber ◽  
Luciana Magda De Oliveira ◽  
Mariane De Oliveira Pereira ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Forest Restoration ◽  
Seedling Emergence ◽  
Natural Populations ◽  
Initial Growth ◽  
Survival Percentage ◽  
Randomized Design ◽  
Physiological Quality ◽  
Emergence Percentage ◽  
Final Survival

The objective of this search was to quantify the genetic variability in progenies from grápia mother trees in natural populations, for initial growth characters of the seedlings. Seeds were collected from 13 mother trees, from four origins, located in the municipalities of Pareci Novo, São José do Sul and Aratiba in RS, and Seara in SC, as well as data from plants and place of origin. Biometrics were performed on 100 seeds lot from each mother tree, and an experiment was installed to evaluate progenies in a completely randomized design. It was evaluated the seedling emergence speed and the emergence percentage, the stem diameter and seedlings height, as well as the final survival percentage. A significative difference was found for all variables observed for seeds and seedlings of grápia mother trees. Seed length and width demonstrated high values for individual heritability in the narrow sense (above 0.6), being possible to use the seed size for an analysis of genetic variability between plants of the species, but not as an indicative variable of physiological quality and vigor. The correlation analysis indicated that the seedling emergence percentage is related to the characteristics of the mother plant plant (height and diameter). Thus, the use of seedlings for forest restoration areas is appropriate, as they have indications of genetic diversity. 

scholarly journals Enhancing genetic fitness while maintaining genetic variability in Araucaria angustifolia

2021 ◽  
Vol 49 (130) ◽  
Author(s):  
Jose Arimateia Rabelo Machado ◽  
Ananda Virgina Aguiar ◽  
Ananias de Almeida Saraiva Pontinha ◽  
Bruno Marchetti Souza ◽  
Alexandre Magno Sebbenn ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Araucaria Angustifolia ◽  
Genetic Fitness

Genetic variability of the initial growth of Eugenia dysenterica DC.: implications for conservation and breeding1

2021 ◽  
Vol 51 ◽  
Author(s):  
Carolina Ribeiro Diniz Boaventura-Novaes ◽  
Evandro Novaes ◽  
Elias Emanuel Silva Mota ◽  
Mariana Pires de Campos Telles ◽  
Lázaro José Chaves
Keyword(s):  
Genetic Variability ◽  
Agronomic Traits ◽  
Germplasm Collection ◽  
Ex Situ ◽  
Brazilian Savanna ◽  
Total Biomass ◽  
Progeny Testing ◽  
Initial Growth ◽  
Initial Development ◽  
Eugenia Dysenterica

ABSTRACT Eugenia dysenterica DC. is a native tree from the Brazilian Savanna known as a genetic resource for its fruits and culinary potential. The knowledge on the genetic variability of agronomic traits is important to support studies on its conservation and domestication. This study aimed to estimate the quantitative genetic parameters of initial growth traits among and within E. dysenterica subpopulations, in provenance and progeny testing, and establish a germplasm collection representative of the species distribution. For that, 25 natural subpopulations were sampled and, within each subpopulation, six mother trees. The progenies were sown in a nursery, in a randomized complete blocks design consisting of 150 progenies, four replications and five plants per plot. The analysis of variance of the initial development traits revealed a greater variability among the progenies within the subpopulation than that observed among the subpopulations. The aboveground biomass represented only 15 % of the total biomass, a recurrent characteristic in Brazilian Savanna species. The estimated heritability and coefficients of genetic variation presented selection potential for the initial development traits, which are important for commercial seedlings production. An in vivo ex situ germplasm collection was established for conservation and breeding purposes, using a sample of four plants from each progeny.

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