Restrição algébrica e modelagem mista podem ser utilizadas para aumentar a acurácia da predição do afilamento de árvores de Pinus taeda?

Abstract A consensus map for loblolly pine (Pinus taeda L.) was constructed from the integration of linkage data from two unrelated three-generation outbred pedigrees. The progeny segregation data from restriction fragment length polymorphism, random amplified polymorphic DNA, and isozyme genetic markers from each pedigree were recoded to reflect the two independent populations of parental meioses, and genetic maps were constructed to represent each parent. The rate of meiotic recombination was significantly greater for males than females, as was the average estimate of genome length for males {1983.7 cM [Kosambi mapping function (K)]} and females [1339.5 cM(K)]. The integration of individual maps allows for the synthesis of genetic information from independent sources onto a single consensus map and facilitates the consolidation of linkage groups to represent the chromosomes (n = 12) of loblolly pine. The resulting consensus map consists of 357 unique molecular markers and covers ∼1300 cM(K).

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Contrasting genotypes, soil amendments, and their interactive effects on short-term total soil CO2 efflux in a 3-year-old Pinus taeda L. plantation

Soil Biology and Biochemistry ◽

10.1016/j.soilbio.2013.10.050 ◽

2014 ◽

Vol 69 ◽

pp. 93-100 ◽

Cited By ~ 5

Author(s):

Michael C. Tyree ◽

John R. Seiler ◽

Chris A. Maier

Keyword(s):

Pinus Taeda ◽

Soil Amendments ◽

Soil Co2 Efflux ◽

Interactive Effects ◽

Co2 Efflux ◽

Soil Co2 ◽

Short Term ◽

Total Soil ◽

Pinus Taeda L

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Long-term effects of stand density management and genotype on wood properties of loblolly pine (Pinus taeda L.) in the mid-South USA

Forest Ecology and Management ◽

10.1016/j.foreco.2021.119176 ◽

2021 ◽

Vol 491 ◽

pp. 119176

Author(s):

Michael A. Blazier ◽

Thomas Hennessey ◽

Laurence Schimleck ◽

Scott Abbey ◽

Ryan Holbrook ◽

...

Keyword(s):

Pinus Taeda ◽

Loblolly Pine ◽

Stand Density ◽

Wood Properties ◽

Long Term Effects ◽

Stand Density Management ◽

Pinus Taeda L

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Comparative Dynamics of Above-Ground Litter Production and Decomposition from Eucalyptus Grandis Hill ex Maiden and Pinus Taeda L., and Their Contribution to Soil Organic Carbon

Forests ◽

10.3390/f12030349 ◽

2021 ◽

Vol 12 (3) ◽

pp. 349

Author(s):

Andrés Baietto ◽

Jorge Hernández ◽

Amabelia del Pino

Keyword(s):

Pinus Taeda ◽

Decomposition Rate ◽

Methodological Approach ◽

Eucalyptus Grandis ◽

Isotopic Analysis ◽

Forest Litter ◽

First Year ◽

Litter Production ◽

Forest Species ◽

Pinus Taeda L

The replacement of native pasture by exotic commercial forest species is an infrequent situation worldwide. In these systems, a new component is introduced, forest litter, which constitutes one of the main ways of incorporating carbon into the soil–plant system. The present work seeks to establish a methodological approach to study the dynamics of litter production and decomposition in an integrated way. The general objective was to characterize and compare the litter production dynamics in 14-year-old Eucalyptus grandis Hill ex Maiden and Pinus taeda L. commercial plantations. During two years, seasonal evaluations of fall, decomposition and accumulation of litter were carried out in stands of both species. In turn, the contribution of carbon from forest species to the soil through isotopic analysis techniques was quantified. Litterfall in E. grandis showed maximums during the spring of the first year and in the spring and summer of the second. In P. taeda, the maximums occurred in summer of the first year and in autumn of the second. In relation to the decomposition rate, the results based on short periods of evaluation between 15 and 21 months did not show differences between species, nor for the different moments of beginning of the evaluation, obtaining average values of 0.0369 month−1 for E. grandis and 0.0357 month−1 for P. taeda. In turn, both the decomposition rate of the material as a whole and the estimates of accumulated biomass in equilibrium state did not show significant differences between the species. Additionally, there was a relevant incorporation of carbon into the soil by forest species, fundamentally in the first few centimeters, substituting an important proportion of the carbon inherited by the original cover of native pastures. Finally, it is necessary to specify that the scope of the findings obtained is greatly limited by the sample size used in this study.

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Bedding and Fertilization Ameliorate Effects of Designated Wet-Weather Skid Trails after Four Years for Loblolly Pine (Pinus taeda) Plantations

Southern Journal of Applied Forestry ◽

10.1093/sjaf/22.4.222 ◽

1998 ◽

Vol 22 (4) ◽

pp. 222-226 ◽

Cited By ~ 14

Author(s):

W. Michael Aust ◽

James A. Burger ◽

William H. McKee ◽

Gregory A. Scheerer ◽

Mark D. Tippett

Keyword(s):

Pinus Taeda ◽

Loblolly Pine ◽

Water Movement ◽

Block Design ◽

Site Preparation ◽

Site Productivity ◽

Mechanical Site Preparation ◽

Wet Weather ◽

Four Levels ◽

Study Sites

Abstract Wet-weather harvesting operations on wet pine fiats can cause soil disturbances that may reduce long-term site productivity. Site preparation and fertilization are often recommended as ameliorative practices for such disturbances, but few studies have actually quantified their effects on restoration. The purposes of this study were to quantify the effects of wet-weather harvest traffic in designated skid trails on soil properties and loblolly pine (Pinus taeda) growth, and to evaluate the ameliorative effects of site preparation. Study sites were established on wet pine flats of the lower Coastal Plain within the Francis Marion National Forest (Berkeley County, SC). Treatments were arranged in a split-split plot within a randomized complete block design. Treatments were two levels of traffic (nontrafficked, trafficked), four levels of mechanical site preparation (none, disking, bedding, disking + bedding), and two levels of fertilization (none, 337 kg /ha of 10-10-10 fertilizer). initially, the trafficking increased soil bulk densities and reduced soil water movement and subsequent growth of loblolly pine (years 1 and 2). Bedding combined with fertilization restored site productivity to non trafficked levels within 4 yr, but disking or fertilization treatments alone were not effective at ameliorating the traffic effects. The effectiveness of the bedding and fertilization treatments for amelioration of traffic effects was probably facilitated by the relatively small area of disturbed skid trails (<10%) found on these sites. Areas having more severe disturbance or higher percentages of disturbance might not be ameliorated as rapidly. South. J. Appl. For. 22(4):222-226.

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Edaphic and Topographic Factors and their Relationship with Dendrometric Variation of Pinus Taeda L. in a High Altitude Subtropical Climate

Revista Brasileira de Ciência do Solo ◽

10.1590/18069657rbcs20180023 ◽

2018 ◽

Vol 42 (0) ◽

Cited By ~ 1

Author(s):

Taciara Zborowski Horst ◽

Ricardo Simão Diniz Dalmolin ◽

Alexandre ten Caten ◽

Jean Michel Moura-Bueno ◽

Luciano Campos Cancian ◽

...

Keyword(s):

High Altitude ◽

Pinus Taeda ◽

Subtropical Climate ◽

Topographic Factors ◽

Pinus Taeda L

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Comparison of container-grown Pinus taeda L. seedlings raised outdoors and in a growth chamber in sunlight

New Forests ◽

10.1007/bf00118879 ◽

1990 ◽

Vol 4 (3) ◽

pp. 223-230

Author(s):

William A. Retzlaff ◽

Ansel E. Miller ◽

Robert M. Allen

Keyword(s):

Pinus Taeda ◽

Growth Chamber ◽

Pinus Taeda L

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Four Site-Preparation Techniques for Regenerating Pine-Hardwood Mixtures in the Piedmont

Southern Journal of Applied Forestry ◽

10.1093/sjaf/21.3.116 ◽

1997 ◽

Vol 21 (3) ◽

pp. 116-122 ◽

Cited By ~ 14

Author(s):

Thomas A. Waldrop

Keyword(s):

Pinus Taeda ◽

Loblolly Pine ◽

Height Growth ◽

Site Preparation ◽

Site Conditions ◽

Growing Seasons ◽

Southern Appalachian ◽

Medium Quality ◽

Pinus Taeda L ◽

Preparation Techniques

Abstract Four variations of the fell-and-burn technique, a system developed to produce mixed pine-hardwood stands in the Southern Appalachian Mountains, were compared in the Piedmont region. All variations of this technique successfully improved the commercial value of low-quality hardwood stands by introducing a pine component. After six growing seasons, loblolly pine (Pinus taeda L.) occupied the dominant crown position and oaks the codominant position in fell-and-burn treated stands on poor to medium quality sites. The precise timing of felling residual stems, as prescribed by the fell-and-burn technique, may be flexible because winter and spring felling produced similar results. Although summer site preparation burns reduced hardwood height growth by reducing the length of the first growing season, they did not improve pine survival or growth. Pines were as tall as hardwoods within four growing seasons in burned plots and within six growing seasons in unburned plots. Additional research is needed to determine the level or intensity of site preparation needed to establish pine-hardwood mixtures over a range of site conditions. South. J. Appl. For. 21(3):116-122.

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