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 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

scholarly journals Seed Source Effects on Germination, Growth, and Yield of Carrots Under Natural Farming

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
You Katsu ◽  
Kotaro Kato ◽  
Shuji Abe ◽  
Kae Miyazawa
Keyword(s):  
Germination Rate ◽  
Farming System ◽  
Seed Source ◽  
Growth And Yield ◽  
Agricultural System ◽  
Conventional Farming ◽  
Source Effects ◽  
Root Parameters ◽  
Seed Sources ◽  
Natural Farming

Abstract Natural farming is a type of low-input sustainable agricultural system that is characterized by the avoidance of the use of any animal materials. Production of self-produced seeds by farmers is recommended under natural farming environments, with an expectation of improved crop growth and yield. However, there have been no scientific studies that investigated the performance of self-produced seeds under natural farming. This study investigated the germination rate, growth, and yield of carrots (Daucus carota L.) from different seed sources under natural farming. The main experimental factor was the cultivation method: CT – control; CF – conventional farming; NF1 – natural farming with tillage and compost input; and NF2 – natural farming without tillage and compost, and the subfactor was the seed source: OPN – open-pollinated seeds self-produced under natural farming; OPC – open-pollinated seeds produced under conventional farming; and HB – hybrid seeds. The germination rate of OPN seeds was higher than that of other seeds. In addition, root fresh weight and other root parameters of OPN were as high as for HB seeds. This suggests that using self-produced seeds by farmers improves crop performance in a natural farming system.

scholarly journals Seed Source Effects on Growth and Flowering of Coreopsis lanceolata and Salvia lyrata

2001 ◽  
Vol 19 (4) ◽  
pp. 212-215
Author(s):  
Jeffrey G. Norcini ◽  
James H. Aldrich ◽  
Frank G. Martin
Keyword(s):  
Seed Source ◽  
Full Bloom ◽  
Low Input ◽  
Source Effects ◽  
Seed Sources ◽  
Survival Percentage ◽  
Local Plants

Abstract Coreopsis lanceolata L. and Salvia lyrata L. from local (Monticello, FL) and nonlocal seed sources were transplanted into a field and maintained under low input, noncompetitive landscape conditions for 2 years. Plants of both species from local seed sources began flowering and were in full bloom earlier than plants from the nonlocal seed sources. Nonlocal C. lanceolata were larger throughout the study. Local S. lyrata were taller than nonlocal plants only when local plants were in flower and nonlocal plants were not. Survival percentage of C. lanceolata was equivalent from both seed sources, but higher for local S. lyrata compared to nonlocal, at the conclusion of the study.

Nutrient Content of the Aboveground Tissue of 12-week-old Loblolly Pine Intraprovenance and Interprovenance Crosses

1975 ◽  
Vol 5 (4) ◽  
pp. 592-598 ◽  
Author(s):  
R. A. Woessner ◽  
C. B. Davey ◽  
B. E. Crabtree ◽  
J. D. Gregory
Keyword(s):  
Loblolly Pine ◽  
Dry Matter ◽  
Dry Weight ◽  
Nutrient Content ◽  
Seed Source ◽  
Good Linear ◽  
Available Nutrients ◽  
Seed Sources ◽  
Linear Relationships ◽  
Aboveground Tissue

Nutrient content (P, K, Ca, Mg) of the aboveground tissue of a series of full-sib loblolly crosses was found to vary by genotype. Variability among and within seed sources is indicated for the ability to absorb Ca and Mg. Absorption of P and K was not found to be dependent on seed source, but the full-sib crosses differ. Good linear relationships were found between plant dry weight and weight of element but not between plant dry weight and percentage of element. Certain highly efficient crosses can be expected to be good producers of dry matter on sites low in available nutrients.

Silver Maple Seed Sources for Increased Biomass Production

1988 ◽  
Vol 5 (3) ◽  
pp. 180-184 ◽  
Author(s):  
Richard F. Kopp ◽  
Wayne A. Geyer ◽  
William R. Lovett
Keyword(s):  
Biomass Production ◽  
Great Plains ◽  
Height Growth ◽  
Seed Source ◽  
Stem Number ◽  
Seed Sources ◽  
Short Rotation ◽  
Silver Maple ◽  
South Central ◽  
Maple Seed

Abstract Silver maple shows promise for use in short-rotation intensive culture energy plantings. A seed source study composed of trees from 26 midwest locations was established in south-central Nebraska in 1979 to determine where silver maple seed should be collected for use in the central Great Plains. Trees were evaluated for survival, height growth, and number of dominant stems per tree during their seventh growing season. Sources from eastern Nebraska, western Iowa, eastern Kansas, and northwest Missouri generally exhibited the greatest survival, height growth, and number of dominant stems. Height growth appears to be under stronger genetic control than stem number, suggesting that selection for height should take priority when selecting trees for biomass production. Geographic trends related to survival and height growth, but not stem number, were observed. Environmental or geographic factors that are strong predictors of seed source performance could not be identified. Planting the most locally produced seed is advisable for the central Plains. North. J. Appl. For. 5:180-184, Sept. 1988.

scholarly journals Performance of Green Ash Seed Sources at Four Locations in the Great Plains Region

2005 ◽  
Vol 22 (1) ◽  
pp. 54-58
Author(s):  
Wayne A. Geyer ◽  
Keith D. Lynch ◽  
John Row ◽  
Peter Schaeffer ◽  
Walter Bagley
Keyword(s):  
Great Plains ◽  
Strong Interaction ◽  
Height Growth ◽  
Cold Injury ◽  
Seed Source ◽  
Green Ash ◽  
Seed Sources ◽  
Ash Trees

Abstract Green ash trees from 10 seed sources were planted in a test in 1961 in four states of the Great Plains Region. After more than 20 years, height growth indicates a strong interaction between seed source and plantation location. Larger trees were from southerly sources within about three degrees of latitude of the plantation site. Beyond those limits, cold injury may result. Height and dbh age-age correlations were highly significant at 8 and 20+ years. Height and dbh correlated negatively with a decrease in latitude. North. J. Appl. For. 22(1):54–58.

The effect of genotype on biomass and nutrient content in 11-year-old loblolly pine plantations

1979 ◽  
Vol 9 (2) ◽  
pp. 224-230 ◽  
Author(s):  
P. E. Pope
Keyword(s):  
Loblolly Pine ◽  
Plant Biomass ◽  
Soil Nutrient ◽  
Dry Weight ◽  
Nutrient Content ◽  
Seed Source ◽  
Elemental Content ◽  
Total N ◽  
Seed Sources ◽  
Hilly Region

Dry weights and nutrient contents of all aboveground biomass components were estimated for four seed sources of 11-year-old loblolly pine (Pinustaeda L.) grown in plantations of the same spacing on an old-field site of high quality in the hilly region of north-central Arkansas, U.S.A. Soil nutrient content was estimated to a depth of 0.61 m. Stand data averaged over all seeds sources are in agreement with published reports for dry weight and nutrient accumulation for loblolly pine if differences associated with seasonal variation are considered. Seed source significantly affected total dry matter and nutrient accumulations. Estimated total aboveground mean annual accumulation of biomass for the four seed sources ranged from 5.99 × 103 to 11.17 × 103 kg/ha per year. Elemental accumulation (kilograms per hectare per year) ranged from 14.06 to 23.66 for N, 1.54 to 3.45 for P, and 6.96 to 18.43 for K. On the average, trees comprise 84% of the aboveground plant biomass and contain 76% of the N, 77% of the P, and 90%, of the K associated with plant tissue. The significant influence of seed source on these stand values can affect the potential impact of short rotation, total tree harvesting on long-term site productivity. The elemental content of the tree biomass ranged from 7 to 11% of the total N, 20 to 35% of the P, and 14 to 30% of the K in the soil–litter–plant system.

Loblolly Pine Provenance Test in Southern Arkansas 25th Year Results

1983 ◽  
Vol 7 (2) ◽  
pp. 71-75 ◽  
Author(s):  
O. O. Wells ◽  
C. C. Lambeth
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Gulf Coast ◽  
Seed Sources ◽  
Potential Gain ◽  
Provenance Test ◽  
Pinus Taeda L ◽  
Forest Managers

Abstract Trees from some eastern seed sources of loblolly pine (Pinus taeda L.) average 8 feet taller than local Arkansas trees after 25 years in southern Arkansas plantings. Trees from most of the range appear well adapted to the climate of southern Arkansas. Only trees from near the Gulf Coast are obviously poorly adapted. Forest managers should weigh this substantial, potential gain carefully against possible risk when choosing seed sources for planting in and near southern Arkansas.

Douglas-Fir from New Mexico More Outstanding than Other Sources Studied in Maryland

1989 ◽  
Vol 6 (2) ◽  
pp. 56-59
Author(s):  
John B. Genys
Keyword(s):  
New Mexico ◽  
Douglas Fir ◽  
Seed Source ◽  
Appalachian Region ◽  
Northern Latitude ◽  
Seed Sources ◽  
Christmas Trees ◽  
Natural Range

Abstract Douglas-fir, represented by different seed sources from its natural range, has been studied in two research plantations in Maryland. In the Piedmont Plateau, 24 populations at age 5 varied in foliage turning brown (0% to 22%) which was associated with the longitude (r = 0.61) and the altitude (r = -0.48) of the seed source. At age 12 they varied in survival (6% to 94%), in height (0.9 m to 1.9 m), and in attraction for use as Christmas trees (0% to 19%), all inversely correlated with the northern latitude. In the Appalachian region, 20 sources at age 19 varied in survival (13% to 81%) and in height (1.5 m to 4.2 m), which was inversely correlated to the western longitude, and directly correlated with the altitude of the seed source. In both plantations, the most outstanding populations in survival, height, and attraction for use as Christmas trees were the two sources from Otero County, NM. North. J. Appl. For. 6:56-59, June 1989.

Geographic patterns of variation in allozymes and height growth in white spruce

1991 ◽  
Vol 21 (5) ◽  
pp. 707-712 ◽  
Author(s):  
Glenn R. Furnier ◽  
Michael Stine ◽  
Carl A. Mohn ◽  
Merlise A. Clyde
Keyword(s):  
White Spruce ◽  
Allozyme Variation ◽  
Allozyme Data ◽  
Evolutionary Forces ◽  
Seed Sources ◽  
Genotype Frequencies ◽  
Provenance Test ◽  
Hardy Weinberg Equilibrium ◽  
Allozyme Loci ◽  
Height Data

Variation in height at ages 9 and 19 years and at six polymorphic allozyme loci was examined for 22 seed sources (populations) in a range-wide white spruce (Piceaglauca (Moench) Voss) provenance test planted in Minnesota. There were strong differences among populations for height, with 48.0 and 54.1 % of the genetic variation for height at ages 9 and 19, respectively, due to differences among populations. Mean observed and expected estimates of allozyme heterozygosity were 0.306 and 0.290, respectively, with little deviation from genotype frequencies expected under a Hardy–Weinberg equilibrium. In contrast with the height data, an average of only 3.8% of this variation was due to differences among populations. Geographic trends were apparent in the height data, with northern and western sources performing the poorest. Neither univariate nor multivariate analyses revealed any geographic trends in the allozyme data. The very different distributions for height and allozyme variation suggest that evolutionary forces are acting in different ways on the genes controlling these traits, and that allozyme data will have limited value in developing sampling strategies for gene conservation programs, where the preservation of germ plasm adapted to many sites throughout a species range is important.

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