scholarly journals A red pine provenance test in northwestern Ontario: 48-year results

2010 ◽  
Vol 86 (3) ◽  
pp. 348-353 ◽  
Author(s):  
Ali A Rahi ◽  
Colin Bowling ◽  
Dale Simpson
Keyword(s):  
Significant Variation ◽  
Pinus Resinosa ◽  
Red Pine ◽  
Provenance Trial ◽  
Maritime Provinces ◽  
Poor Growth ◽  
Breast Height ◽  
Seed Sources ◽  
Northwestern Ontario ◽  
Provenance Test

Survival, total height and diameter at breast height (DBH) were measured in the fall of 2005 in a 48-year-old red pine (Pinus resinosa Ait.) provenance trial growing in northwestern Ontario. There was significant variation in both height and diameter among the 23 provenances. Generally, westerly provenances performed well while those from the Maritime Provinces exhibited relatively poor growth. Considering that the plantation is at the northern biological range of red pine, survival was high, averaging 96% after 48 years. Provenances with the best growth rates exceeded a volume of 420 m3 ha-1. Some provenances from Minnesota and Wisconsin as well as Fort Frances, Ontario exhibited superior growth and should be considered as seed sources for future planting programs in northwestern Ontario. Key words: red pine, provenance test, survival, diameter, height, volume, Northwestern Ontario

PARASITES OF THE RED-PINE SAWFLY, NEODIPRION NANULUS NANULUS (HYMENOPTERA: DIPRIONIDAE), IN NEW BRUNSWICK

1967 ◽  
Vol 99 (10) ◽  
pp. 1114-1116 ◽  
Author(s):  
G. R. Underwood
Keyword(s):  
New Brunswick ◽  
Pinus Resinosa ◽  
Red Pine ◽  
Maritime Provinces ◽  
Pine Sawfly

AbstractEggs, larvae, and cocoons of Neodiprion nanulus nanulus Schedl, from an isolated infestation in a small plantation of red pine, Pinus resinosa Aiton, near Fredericton, N.B., were reared for parasites. Nine species of ichneumonids were obtained, eight of which are first records from this host in the Maritime Provinces.

scholarly journals Spacing and Age Effects on Biomass Production in Red Pine Plantations

1982 ◽  
Vol 58 (5) ◽  
pp. 220-224 ◽  
Author(s):  
I. S. Alemdag ◽  
W. M. Stiell
Keyword(s):  
Pinus Resinosa ◽  
Stem Bark ◽  
Red Pine ◽  
Stand Age ◽  
High Survival ◽  
Single Tree ◽  
Breast Height ◽  
Drying Procedures ◽  
Initial Spacing ◽  
Whole Tree

Data and wood samples were collected from 155 trees in 16 high-survival, unthinned plantations of red pine (Pinus resinosa Ait.) near Chalk River, Ontario, aged 27 to 54 years, with initial spacings of from 1.52 × 1.52 m to 4.27 × 4.27 m. Following standard weighing and drying procedures, ovendry mass values of the whole tree and or their individual components were calculated, and regressions developed to relate mass values to stem dimensions of diameter breast height (d) and total height (h), and to determine what effects the initial spacing and stand age had on those relations. Single-tree equations based simply on d and h gave satisfactory mass estimates only for the whole tree and for the component stem bark. For other components the addition of spacing and age showed successive improvements in the estimates over those provided by d2h alone.

Adaptive variation in Piceamariana from northwestern Ontario determined by short-term common environment tests

1994 ◽  
Vol 24 (8) ◽  
pp. 1653-1661 ◽  
Author(s):  
William H. Parker ◽  
Annette Van Niejenhuis ◽  
Paul Charrette
Keyword(s):  
Black Spruce ◽  
General Pattern ◽  
Shoot Elongation ◽  
Climatic Variables ◽  
Adaptive Variation ◽  
Short Term ◽  
Seed Sources ◽  
The North ◽  
Northwestern Ontario ◽  
Provenance Test

To obtain a better understanding of the pattern of adaptive variation of Piceamariana (Mill.) B.S.P. from northwestern Ontario, a short-term provenance test was carried out for 75 seed sources collected east and west of Lake Nipigon. Provenances were grown in common environments at a greenhouse for two seasons (1990–1991) and a farm field and a forestry trial each for four growing seasons (1990–1993). Twenty-five growth and phenological variables were determined, including seedling height, needle flushing date, and the timing of shoot elongation. Significant levels of interprovenance variation were present for 18 of these variables. Graphic analysis of the pattern of variation indicated that sources from the southwestern portion of the collected area generally grew faster and flushed later than easterly sources near the north shore of Lake Superior. Superimposed on this general pattern were several irregularities caused by one or more provenances. Multiple regressions were run for each of the 18 variables against latitude, elevation, and 12 climatic variables interpolated for each of the seed sources by a geographic information system from 1951–1980 data obtained from 56 nearby weather stations. Large coefficients of variation (up to 0.57) were obtained for some variables. Combinations of climatic variables, including winter minimum and summer maximum temperatures together with precipitation and timing of the growing season, were excellent predictors of black spruce needle flushing dates, while summer temperature, precipitation, and elevation were moderately good predictors of height growth.

FREQUENCY OF LAMMAS GROWTH IN A PROVENANCE TEST OF RED PINE

1967 ◽  
Vol 45 (6) ◽  
pp. 833-838 ◽  
Author(s):  
D. T. Lester ◽  
G. E. Rehfeldt
Keyword(s):  
Red Pine ◽  
Seed Source ◽  
Total Variance ◽  
Source Effects ◽  
Seed Sources ◽  
Control Stock ◽  
Provenance Test ◽  
Predominant Effect

Variation in the frequency of lammas growth among 18 Canadian seed sources and Wisconsin control stock at ages 11 and 13 was studied in a central Wisconsin plantation. Analyses of variance indicated a predominant effect of year of observation on frequency of lammas growth. Seed source effects were highly significant statistically, but contributed relatively little to total variance.

scholarly journals Effect of Seed Transfer on Selected Wood Quality Attributes of Jack Pine (Pinus banksiana Lamb.)

Forests ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 985
Author(s):  
Cyriac S. Mvolo ◽  
Ahmed Koubaa ◽  
Jean Beaulieu ◽  
Alain Cloutier
Keyword(s):  
Growth Rate ◽  
Pinus Banksiana ◽  
Juvenile Wood ◽  
Wood Quality ◽  
Jack Pine ◽  
Quality Attributes ◽  
Surprising Result ◽  
Breast Height ◽  
Seed Sources ◽  
Provenance Test

So far, few studies have considered the impacts of seed sources transfer on jack pine (Pinus banksiana Lamb.) wood quality, although wood quality attributes (WQA) in general and the differences between juvenile and mature wood in particular will determine suitability of the produced wood for end-uses. The main objective of this study was to examine the possibility of selecting superior jack pine provenances based on selected WQA. Twenty-two provenances of jack pine were planted in 1964 in Petawawa Research Forest, ON, Canada, as part of a provenance test. The plantation location offers conditions close to optimum for jack pine growth. Transition ages at breast height, determined with tracheids length, were computed with a piecewise model. Measurements at age 42 from seed were subjected to analyses of variance. Radial variations from pith to bark, as well as trends with seed sources origin of the selected WQA were also considered. A ranking was made based on a selection index built with four WQA. The provenances matured between 8 and 14 years, corresponding to 17%–48% of juvenile wood proportion. Significant differences among provenances were observed for ring width, ring density, tracheid length, and diameter at breast height but not for tracheid diameter, tree height, transition age, and juvenile wood proportion. None of the provenances ranked the best with all the selected WQA, but it was possible to find provenances exhibiting both high growth rate and good wood quality. A surprising result of this study was that tracheid diameter initially enlarged for 8 years, before declining toward the bark. It is possible to select provenances for a higher growth rate and for good physical (i.e., related to wood density) and anatomical (i.e., related to tracheid dimensions) wood quality attributes.

THE SEED PRODUCTION CAPACITY AND EFFICIENCY OF RED PINE CONES (PINUS RESINOSA AIT.)

1956 ◽  
Vol 34 (1) ◽  
pp. 27-36 ◽  
Author(s):  
L. A. Lyons
Keyword(s):  
Seed Production ◽  
Production Efficiency ◽  
Production Capacity ◽  
Pinus Resinosa ◽  
Proximal Part ◽  
Red Pine ◽  
First Year ◽  
Tree Crown ◽  
Second Year ◽  
Pine Cones

The seed capacity of red pine cones varies from about 30 to over 110, depending on the size of the cone and its position in the tree crown, and is determined by the number of ovules that are structurally complete at the time of pollination. These ovules occur in a central "productive" region and constitute less than one-half of the total. The remaining ovules, most: of which are in the proximal part of the cone, never become structurally perfect, and do not contribute to seed production. Abortion of ovules in the productive region usually reduces seed production efficiency to 50–60%, and is accompanied mainly by withering of the nucellus in the first year and failure to produce archegonia early in the second year. The extent of ovule abortion during the first year varies indirectly with cone size, seed capacity, and height in tree.

Growth of Clumped vs. Equally Spaced Trees

1982 ◽  
Vol 58 (1) ◽  
pp. 23-25 ◽  
Author(s):  
W. M. Stiell
Keyword(s):  
Basal Area ◽  
Pinus Resinosa ◽  
Red Pine ◽  
Form Class ◽  
Significant Tendency ◽  
Made In ◽  
Crown Size

Fifteen-year results are presented for a thinning experiment made in 13-year-old red pine (Pinus resinosa Ait.), designed to compare growth of trees in 4-tree clumps with that of uniformly spaced trees, in both cases growing at 890 stems/ha. By the end of the period, average crown size, form class and height were about the same for both stands, but growth by trees in clumps had been less for dbh and for basal area and total volume per hectare. Clumped trees had a significant tendency to lean away from each other. It was concluded that control of inter-tree spacing at planting or thinning is justified to the extent that clumps of more than three adjacent trees be avoided.

scholarly journals Interactions of the Effects of Provenances and Habitats on the Growth of Scots Pine in Two Provenance Tests in Bosnia and Herzegovina

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Mirzeta Memišević Hodžić ◽  
Dalibor Ballian
Keyword(s):  
Multivariate Analysis ◽  
Bosnia And Herzegovina ◽  
Scots Pine ◽  
Average Diameter ◽  
Habitat Conditions ◽  
Diameter At Breast Height ◽  
Ecological Conditions ◽  
Breast Height ◽  
Provenance Test ◽  
The Given

This research aims to determine the interaction of the effects of provenance and habitat conditions on provenance tests on the growth of Scots pine on two experimental plots in Bosnia and Herzegovina. Provenance tests are located on plots with different ecological conditions and altitudes: Romanija Glasinac, 1000 m, and Gostović Zavidovići, 480 m. Both tests include 11 provenances and two clonal seed plantations with 10 families in each, and five repetitions. Tree heights and diameters at breast height were measured at the age of 21 years. Interactions were determined using multivariate analysis for measured traits. The highest average heights on the provenance test Glasinac had provenances Bugojno, Romanija Glasinac, and Šipovo (8.8 m), and on the Gostović provenance Rogatica (11.0 m). The highest average diameter at breast height on the Glasinac test had Šipovo provenance (13.9 cm) and on the Gostović test Bosanski Petrovac provenance (12.3 cm). Variance analysis showed statistically significant differences among provenances in terms of diameter at breast height and height values. Multivariate analysis showed the presence of interactions of effects of provenances and habitat conditions on provenance tests. For provenances that did not show interaction, it is recommended to use provenances that performed better in the given ecological conditions, and for those that showed interaction, it is necessary to choose those provenances which are expected to show better results in given conditions later in life. The obtained results are very important for the conservation activities of this species.

USE OF THE RELATIVE TURGIDITY TECHNIQUE FOR MEASUREMENT OF WATER STRESSES IN GYMNOSPERM LEAVES

1965 ◽  
Vol 43 (2) ◽  
pp. 305-316 ◽  
Author(s):  
J. J. Clausen ◽  
T. T. Kozlowski
Keyword(s):  
Abies Balsamea ◽  
Pinus Resinosa ◽  
Tsuga Canadensis ◽  
Red Pine ◽  
Eastern Hemlock ◽  
Balsam Fir ◽  
White Pine ◽  
Sampling Variation

Adaptations of Weatherley's relative turgidity technique (Weatherley 1950), fitting it for use with red pine (Pinus resinosa Ait.), white pine (P. strobus L.), balsam fir (Abies balsamea (L.) Mill.), and eastern hemlock (Tsuga canadensis (L.) Carr.) are described. Results of preliminary investigations of sampling variation between trees, whorls, and needle ages in red pine are presented.

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