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Готові списки джерел за темами / Composite seedling seed orchard / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Composite seedling seed orchard.

Статті в журналах з теми "Composite seedling seed orchard"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Nirsatmanto, Arif. "GENETIC VARIATION OBSERVED IN COMPOSITE SEEDLING SEED ORCHARD OF Acacia mangium Willd. AT CENTRAL JAVA, INDONESIA : IMPLICATIONS FOR INCREASING GENETIC GAIN AND SEED PRODUCTION." JOURNAL OF FORESTRY RESEARCH 9, no. 2 (2012): 91–99. https://doi.org/10.20886/ijfr.2012.9.2.91-99.

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Анотація:

As part of multiple-population breeding scheme using sub-lining system, a composite seedling seed orchard of was established at Central Java, Indonesia. The orchard comprises a combination of the best 40 plus tree families selected from four sub-lines in the first-generation of Acacia mangium progeny trial. The design of orchard is randomized complete block laid-out as four line tree-plot of six replications with a spacing of 2 x 4 meter. Variation among sub-lines and families within sub-line, and genetic parameters for height, dbh and volume were investigated at age of 24 months. The aim of t

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2

Nirsatmanto, Arif. "Genetic Variation Observed in Composite Seedling Seed Orchard of Acacia mangium Willd. at Central Java, Indonesia : Implications for Increasing Genetic Gain and Seed Production." Indonesian Journal of Forestry Research 9, no. 2 (2012): 91–99. http://dx.doi.org/10.20886/ijfr.2012.9.2.91-99.

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3

Mamu, Bengia, Oyi Dai Nimasow, and Rajiv Kumar Singh. "Asymbiotic in vitro seed culture of Paphiopedilum fairrieanum, P. venustum and Dendrobium densiflorum on low-cost substrata." Journal of Bioresources 9, no. 2 (2022): 26–32. https://doi.org/10.5281/zenodo.8251896.

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Asymbiotic germination of immature seeds of orchids represents a valuable method for large-scale seedling production, addressing both commercial demand and the conservation of rare and endangered species. In this study, we explored the efficacy of three low-cost substrates: Polyurethane foam (PUF), Coconut husk chips (CHC), and Tree Leaf litter (TLL), as substitutes for the expensive agar-gelled medium in the <em>in vitro</em> seedling culture of three commercially important orchid species, namely, <em>Paphiopedilum fairrieanum</em> (Lindl.) Stein., <em>P. venustum</em

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4

Shuleva, Stanimira, Velichko Gagov, and Petar Zhelev. "Outcrossing rates in two seed orchards of Pinus nigra Arn. in Bulgaria." Silva Balcanica 24, no. 1 (2023): 47–54. http://dx.doi.org/10.3897/silvabalcanica.24.e101560.

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Seed orchards are an important source of seeds with improved genetic quality. Here we present results of a study on the genetic composition of seed orchards crop of Austrian black pine (Pinus nigra Arn.). Two seed orchards were included in the study &ndash; a clonal seed orchard established near Sliven, and a seedling seed orchard, established in the region of Simitli. The outcrossing rates were higher in the clonal seed orchard (Sliven), 0.873 and 0.806 multi-locus (tm) and single-locus (ts) estimates, respectively. The same values were 0.623 and 0.530, respectively, in the seedling seed

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5

Shuleva, Stanimira, Velichko Gagov, and Petar Zhelev. "Outcrossing rates in two seed orchards of Pinus nigra Arn. in Bulgaria." Silva Balcanica 24, no. (1) (2023): 47–54. https://doi.org/10.3897/silvabalcanica.24.e101560.

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Анотація:

Seed orchards are an important source of seeds with improved genetic quality. Here we present results of a study on the genetic composition of seed orchards crop of Austrian black pine (<em>Pinus nigra</em> Arn.). Two seed orchards were included in the study – a clonal seed orchard established near Sliven, and a seedling seed orchard, established in the region of Simitli. The outcrossing rates were higher in the clonal seed orchard (Sliven), 0.873 and 0.806 multi-locus (t<sub>m</sub>) and single-locus (t<sub>s</sub>) estimates, respectively. The same values were 0.623 and 0.530, respecti

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6

Doran, J. C., G. R. Baker, E. R. Williams, and I. A. Southwell. "Genetic gains in oil yields after nine years of breeding Melaleuca alternifolia (Myrtaceae)." Australian Journal of Experimental Agriculture 46, no. 11 (2006): 1521. http://dx.doi.org/10.1071/ea05205.

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A breeding program to enhance the economics of producing essential oil (Australian tea tree oil) from Melaleuca alternifolia plantations in eastern Australia by improving oil yields and oil quality commenced in 1993. This paper reports the results of the first (2003) and second harvests (2004) of a yield trial established by the program in 2002. The trial compares the performance of three grades of seed (clonal seed orchard, first generation seedling seed orchard and selected provenance) released to the industry by the breeding program against an unimproved seedlot (industry standard). Industr

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7

Yue, Guo Zhong, Min Hua Zhao, Guo Jun Zhang, Wan Qi Wang, and Jun Ming Yang. "Seed Germination and Seedling Growth Characteristics of Different Larix principis-rupprechtii Families." Advanced Materials Research 1073-1076 (December 2014): 1112–16. http://dx.doi.org/10.4028/www.scientific.net/amr.1073-1076.1112.

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Phenotypic traits (thousand seed weight and plumpness, etc.), germination characteristics (germination rate and nursery germination rate, etc.), growth traits (seedling height, basal diameter, root length, etc.) and photosynthetic parameters of 8 superior families and 3 controls (seed orchard, seed production stand and planted forest) were measured and analyzed to determine the difference of seed germination and seedling growth among Larix principis-rupprechtii families. Results showed that families 7-46, 8-74 and 1-30 performed excellent in aspects of germination index, nursery germination ra

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8

Sunarti, S., A. Nirsatmanto, A. I. Putri, et al. "Development of morphological marker on natural interspecific hybrid seedling of Acacia (Acacia mangium × Acacia auriculiformis) verified by molecular marker." IOP Conference Series: Earth and Environmental Science 1116, no. 1 (2022): 012043. http://dx.doi.org/10.1088/1755-1315/1116/1/012043.

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Abstract Development of the hybridization between two different species of Acacia mangium and Acacia auriculiformis in Indonesia started in 2009 by establishing an open-pollinated orchard to produce the natural Acacia hybrid seed in Wonogiri District, Central Java Province. The design of the orchard was an alternate row between A. mangium and A. auriculiformis with a spacing of 5 × 5 meters. The orchard produced putative Acacia hybrid seeds firstly in 2013. Based on flowering synchronization between the two species, seeds from 38 sample trees of A. mangium were taken to identify their characte

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9

Kartikawati, Noor Khomsah, and Sumardi Sumardi. "Crossing potential of open pollination in Cajuputi seedling seed orchard at Paliyan, Gunungkidul." Jurnal Penelitian Kehutanan Wallacea 6, no. 1 (2017): 41. http://dx.doi.org/10.18330/jwallacea.2017.vol6iss1pp41-51.

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There are two possibilities on open pollination: cross pollination and self pollination. This research was aimed to identify cross pollination potential within and among provenance, and to determine the flowering behavior of each provenance in seedling seed orchard of cajuputi at Paliyan, Gunungkidul. The research was conducted based on flowering phenology (start of flowering, end of flowering and duration of flowering in one period) for all flowering trees during two flowering periods. The result showed that there was high crossing potential in seedling seed orchard of cajuputi based on flowe

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10

Powers, H. R., and J. F. Kraus. "A Comparison of Fusiform Rust-Resistant Loblolly Pine Seed Sources." Southern Journal of Applied Forestry 10, no. 4 (1986): 230–32. http://dx.doi.org/10.1093/sjaf/10.4.230.

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Abstract A greenhouse inoculation study compared resistance to fusiform rust (Cronartium quercuum (Berk.) Miyabe ex Shirai f. sp. fusiforme) of loblolly pine (Pinus taeda L.) seedlings derived from bulk seed produced in 4 rust-resistant seed orchards, 1 rust-resistant geographic seed source (Livingston Parish, LA), and a control treatment of improved loblolly from a first-generation production orchard. The rust-resistant orchards included 2 forest industry orchards developed from the most rust-resistant clones available within a tree improvement cooperative (1st generation), and both a clonal

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11

Yuskianti, Vivi, and Keiya Isoda. "DETECTION OF POLLEN FLOW IN THE SEEDLING SEED ORCHARD OF Acacia mangium USING DNA MARKER." OURNAL OF FORESTRY RESEARCH 10, no. 1 (2013): 31–41. https://doi.org/10.20886/ijfr.2013.10.1.31-41.

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Pollen pattern dispersal in seedling seed orchard (SSO) is an essential part of a tree-improvement program. Two SSOs of <em>Acacia mangium</em> in South Kalimantan and South Sumatra that represent similar resources in different environments were used in this study.  Genotypes of all trees and seeds from a subset of 10 mother trees in each orchard were determined for 12 microsatellite loci, and parentage analysis was carried out. The results shows that the pollen dispersal pattern in both SSOs decrease with distance from mother tree. Patterns of pollen dispersal, dispersal distance and cum

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12

Nurtjahjaningsih, I. L. G. "PARENT IDENTIFICATION IN A MULTI LOCATION TRIAL SEED ORCHARD OF ACACIA MANGIUM USING MICROSATELLITE MARKERS." Indonesian Journal of Forestry Research 3, no. 1 (2016): 19–26. https://doi.org/10.59465/ijfr.2016.3.1.19-26.

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Variation of parent gametes' contribution might affect the growth patterns among offspring produced from seed orchards. This paper studies the mating system statuses and to identify parent trees that produce good growth performance of offspring in seedling seed orchard of A. mangium. The study was conducted in two seed orchards, i.e. a first generation seedling seed orchard (F1 SSO) of A. mangium, used as the parent population hereafter and a multi location trial (MLT) as an offspring population. Based on 10 microsatellite markers, mating system in the F1 SSO was under panmictic equilibrium co

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13

Widyatmoko, A. Y.P.B.C., S. Shiraishi, A. Nirsatmanto, and H. Kawazaki. "THE EFFECT OF INDIVIDUAL SELECTION FOR GENETIC DIVERSITY OF Acacia mangium SEEDLING SEED ORCHARD USING AFLP MARKERS." JOURNAL OF FORESTRY RESEARCH 3, no. 2 (2006): 75–81. https://doi.org/10.20886/ijfr.2006.3.2.75-81.

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Establishment of seed orchard is aimed at producing good quality seeds which is an important activity for breeding program. Seed orchard is also a base population, thus its genetic diversity is depending on its design and composition (provenance, family and individual tree). Selection of an individual tree in seed orchard is needed for the enhancement of  retaining good-character trees. However, selection of individual tree can change the genetic diversity of seed orchard, and the degrees to which the genetic diversity will change depend on the used selection methods. In order to investig

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14

Bhagta, Shikha, H. Sankhyan, Sanjeev Thakur, Rohit Bishist, and R. Gupta. "Evaluation of Seedling Seed Orchard of Grewia optiva Drummond for Morphometric and Fodder Quality Parameters." Journal of Non Timber Forest Products 26, no. 4 (2019): 179–84. http://dx.doi.org/10.54207/bsmps2000-2019-uta0o3.

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Forty half sib progenies in open pollinated seedling seed orchard of Grewia optiva Drummond were evaluated for morphometric and fodder quality traits. The analysis of variance indicated highly significant differences among the various half sib families for all the traits. The experimental results revealed that out of 40 families, ten families viz., SI-15, SO-3, HA-2, HA-3,HA-4,SO-7,SH-7,SO-4,SI-6 and SI-14 were found superior on the basis of overall mean performance for all quantitative and qualitative traits under study. Hence, these ten half sib families in the seedling seed orchard can be u

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15

Nurtjahjaningsih, I. L. G. "PARENT IDENTIFICATION IN A MULTI LOCATION TRIAL SEED ORCHARD OF ACACIA MANGIUM USING MICROSATELLITE MARKERS." JOURNAL OF FORESTRY RESEARCH 3, no. 1 (2016): 19–26. https://doi.org/10.20886/ijfr.2016.3.1.19-26.

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Анотація:

Variation of  parent gametes' contribution might affect the growth patterns among offspring produced from seed orchards. This paper studies the mating system statuses and to identify parent trees that produce good growth performance of  offspring in seedling seed orchard of <em>A. mangium</em>. The study was conducted in two seed orchards, i.e. a first generation seedling seed orchard (F1 SSO) of  <em>A. mangium,</em> used as the parent population hereafter and a multi location trial (MLT) as an offspring population. Based on 10 microsatellite markers, mating system in the F

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16

Sijacic-Nikolic, Mirjana, and Vasilije Isajev. "Model of experimental clonal seed orchard for the production of Serbian spruce sPicea omorika /Panc./Purkyne) intraspecific hybrids." Genetika 34, no. 1 (2002): 11–19. http://dx.doi.org/10.2298/gensr0201011s.

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The presented model for the establishment of an experimental clonal seed orchard of Serbian spruce was designed based on the results of the analysis and assessment of the genetic potential of Serbian spruce seedling seed orchard at Godovik. Based on the results of the analyses, eight superior half-sib lines of Serbian spruce were selected, of which 24 genotypes were selected. Their hybridisation, by the model of incomplete diallel cross resulted in 21 combinations at the level of half-sib lines, i.e. 48 combinations at the level of parent genotypes. The applied study methods identified the pot

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17

Kriebel, Howard B. "Genetic improvement of sugar maple for high sap sugar content. I. Clone selection and seed orchard development." Canadian Journal of Forest Research 19, no. 7 (1989): 917–23. http://dx.doi.org/10.1139/x89-139.

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A grafted seed orchard of Acersaccharum Marsh, was established in Ohio in 1957 as part of a program of genetic improvement of sugar yield. During the 3rd decade, the orchard trees averaged 4.2% sap sugar. Although environmental sources of variance in sugar concentration were large, clonal differences were evident and generally consistent over the years; the clone × year interaction was negligible. Sap sugar concentration varied from year to year, but after an increase coinciding with early crown development in the 1st decade, there was no upward or downward trend with age. Inclusion of one see

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18

Wennström, Ulfstand, Urban Bergsten, and Jan-Erik Nilsson. "Early seedling growth of Pinus sylvestris after sowing with a mixture of stand and orchard seed in dense spacings." Canadian Journal of Forest Research 31, no. 7 (2001): 1184–94. http://dx.doi.org/10.1139/x01-050.

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Effects on early seedling growth of seeding stand and orchard seed of Pinus sylvestris L. in different mixtures (100, 75, 50, 25, and 0% of orchard seed) at 4-cm target spacing were quantified in one nursery and one field experiment during a 2- and 5-year period, respectively. In the field experiment, 50% mixtures at 8- and 12-cm target spacing were also studied. Seedlings from orchard seeds (OS) had in general higher growth rate than seedlings from stand seed (SS). In the nursery experiment, OS were 25% taller, had 41% larger above-soil biomass, and 18% larger root biomass than SS after 2 yea

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19

Owens, John N., and Danilo D. Fernando. "Pollination and seed production in western white pine." Canadian Journal of Forest Research 37, no. 2 (2007): 260–75. http://dx.doi.org/10.1139/x06-220.

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The reproductive biology of western white pine ( Pinus monticola Dougl. ex D. Don) at the Saanich seed orchard (SSO; a coastal seedling seed orchard) and the Kalamalka seed orchard (KSO; an interior clonal seed orchard) is described. Seed-cone development and morphology determine seed potential and affect filled seed production. Seed potential was high, commonly over 200 seeds per cone and filled seeds per cone averaged 50–60 at both orchards in 1999 from open pollinations combined with operational supplemental mass pollinations (OP-SMP). Filled seeds per cone at SSO in 2004 averaged 115 with

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20

K., Kartikawati Noor. "FERTILITY VARIATION OF Melaleuca cajuputi subsp. cajuputi AND ITS IMPLICATION IN SEED ORCHARD MANAGEMENT." JOURNAL OF FORESTRY RESEARCH 3, no. 2 (2016): 83–94. https://doi.org/10.20886/ijfr.2016.3.2.83-94.

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Information about fertility variation of flowering trees in seed orchard including determining the quality of seed production and estimating the genetic diversity are still lacking. This paper evaluates fertility variation, effective population size and genetic diversity among cajuput trees in seedling seed orchard at Paliyan, Gunungkidul for optimizing seed orchard management. A total of 160 trees were observed in three flowering periods of 2011-2013. The fertility based on the number of flowers and fruits were registered for each tree at the age of 12, 13 and 14 years. Results show that ther

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21

Kartikawati, Noor K. "FERTILITY VARIATION OF Melaleuca cajuputi subsp. cajuputi AND ITS IMPLICATION IN SEED ORCHARD MANAGEMENT." Indonesian Journal of Forestry Research 3, no. 2 (2016): 83–94. https://doi.org/10.59465/ijfr.2016.3.2.83-94.

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Анотація:

Information about fertility variation of flowering trees in seed orchard including determining the quality of seed production and estimating the genetic diversity are still lacking. This paper evaluates fertility variation, effective population size and genetic diversity among cajuput trees in seedling seed orchard at Paliyan, Gunungkidul for optimizing seed orchard management. A total of 160 trees were observed in three flowering periods of 2011-2013. The fertility based on the number of flowers and fruits were registered for each tree at the age of 12, 13 and 14 years. Results show that ther

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22

Dalgleish, Harmony J., John T. Shukle, and Robert K. Swihart. "Weevil seed damage reduces germination and seedling growth of hybrid American chestnut." Canadian Journal of Forest Research 42, no. 6 (2012): 1107–14. http://dx.doi.org/10.1139/x2012-067.

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Seed predation by weevils (Coleoptera: Curculionidae) has been implicated as a limiting factor in oak recruitment throughout eastern US forests. We examined the effects of weevil seed predation on American chestnut (Castanea dentata (Marsh.) Borkh.). Although an introduced pathogen eradicated sexually reproducing populations of American chestnut in the early 1900s, the recent development of a blight-resistant hybrid makes reintroduction feasible. We nondestructively assessed the amount of weevil damage to seeds using X-ray imagery and traditional float test methods in American and blight-resis

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23

Roth, Brian E., and Michael Newton. "Survival and Growth of Douglas-Fir Relating to Weeding, Fertilization, and Seed Source." Western Journal of Applied Forestry 11, no. 2 (1996): 62–69. http://dx.doi.org/10.1093/wjaf/11.2.62.

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Abstract The goal of this study was to quantitatively evaluate the individual and interactive effects of weed control, nitrogen fertilization, and seed source on Douglas-fir (Pseudotsuga menziesii) survival and growth in a range of sites and growing conditions in western Oregon. Weed control was the dominant factor influencing seedling survival and growth and accounted for 49% of the explained variation in seedling volume after 2 yr. Nitrogen fertilization had no effect when used in conjunction with weed control and a negative effect when used without weed control. Seedlings from a seed orchar

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24

Yuniarti, Naning, Megawati Megawati, and Budi Leksono. "The effect of method and germination paper substrate on viability of Eucalyptus pellita F. Mull seed." Jurnal Penelitian Kehutanan Wallacea 6, no. 1 (2017): 13. http://dx.doi.org/10.18330/jwallacea.2017.vol6iss1pp13-19.

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Improper seed handling of Eucalyptus pellita will reduce seed quality, so as to improve the viability of the seed proper handling techniques are needed. To investigate the seed germination potency as a result of seed handling germination seed tests are needed. The purpose of this study was to examine the effect of germination method and paper substrate on the viability of E. pellita seeds. Seeds used in this study were from seedling seed orchard in South Sumatra, South Kalimantan, and Riau. Seed germination methods used in the laboratory tests were method of top paper and between paper tests,

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25

Annapurna, D., T. S. Rathore, and P. V. Somashekhar. "Impact of Clones in a Clonal Seed Orchard on the Variation of Seed Traits, Germination and Seedling Growth in Santalum album L." Silvae Genetica 54, no. 1-6 (2005): 153–60. http://dx.doi.org/10.1515/sg-2005-0023.

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Summary Clonal Seed Orchard (CSO) of Santalum album L. at Nallal, India consisting of 25 clones originated from different agro-climatic conditions of four southern states (Karnataka, Tamil Nadu, Kerala and Andhra Pradesh) was source of seeds for variability studies. There was vast variation in seed size, weight, germination, vigour and seedling growth of different clones over the years. Seed length, width and weight were positively correlated to each other but seed size had no effect on germination, Germination Value (GV), days taken for germination and early seedling growth. Effects of Clones

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26

Sangeetha, B. M., N. Bharati Bhat, R. D. Prasad, V. Dinesh Kumar, K. Supriya, and K. S. V. P. Chandrika. "Effect of Cu-chitosan Composite Based Seed Coating on Seed Quality Enhancement and Antifungal Activity." International Journal of Economic Plants 12, May, 3 (2025): 01–06. https://doi.org/10.23910/2/2025.5982.

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The experiment was conducted during September to November, 2023 at ICAR-IIOR, Rajendranagar, Hyderabad, Telangana (500030), India to develop and evaluate the Cu-chitosan based composite as seed treatment material and its antifungal activity against soil borne pathogen, Sclerotium rolfsii Sacc. and compatibility of Cu-chitosan composite with biocontrol agent Trichoderma, in order to develop a sustainable approach to enhance seedling growth in groundnut. Chitosan, a natural biopolymer has a significant attention in agriculture due to its versatile properties. Seed coating with chitosan improves

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27

Kamalakannan, R., M. Varghese, and D. Lindgren. "Fertility Variation and its Implications on Relatedness in Seed Crops in Seedling Seed Orchards of Eucalyptus camaldulensis and E. tereticornis." Silvae Genetica 56, no. 1-6 (2007): 253–59. http://dx.doi.org/10.1515/sg-2007-0036.

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Анотація:

Abstract Seedling seed orchards of Eucalyptus tereticornis (N =192 & 505) and E. camaldulensis (N =182 & 525) were established at two sites (one moist and one dry) in southern India. The fertility (based on the number of flowers and fruits) was registered for each tree at age eight and nine years. E. camaldulensis on the moist location had 73% fertile trees and low fertility difference (sibling coefficient, Ψ, was 2.27) at eight years. whereas Only 23% trees were fertile in the E. tereticornis orchard at the same site and the fertility variation was high (Ψ =11.71). In the dry location

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28

El-Kassaby, Y. A., and A. J. Thomson. "Parental Rank Changes Associated with Seed Biology and Nursery Practices in Douglas-Fir." Forest Science 42, no. 2 (1996): 228–35. http://dx.doi.org/10.1093/forestscience/42.2.228.

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Abstract The impact of container-nursery management practices on the genetic composition of seedling crops was evaluated in an experimental study designed to determine the cumulative effects of: (1) differences in parental reproductive output in bulk seedlots, (2) parental variation in germination parameters (percent and speed), and (3)the interaction of these parameters with container-nursery practices of thinning and culling, and their effect on the genetic representation of parents in the resultant seedling crops. Results from the experimental study were compared to predictions of a stochas

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29

Leksono, Budi, Susumu Kurinobu, and Yuji Ide. "AN OPTIMUM DESIGN FOR SEEDLING SEED ORCHARDS TO MAXIMIZE GENETIC GAIN: AN INVESTIGATION ON SEEDLING SEED ORCHARDS OF Eucalyptus pellita F. Muell." JOURNAL OF FORESTRY RESEARCH 6, no. 2 (2009): 85–95. https://doi.org/10.20886/ijfr.2009.6.2.85-95.

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 The optimum design of seedling seed orchards in order to maximize genetic gain was investigated. Variance components were estimated on the basis of heigts of individual plants in the first-generation seed orchards of Encaliptus pelita with ages of 1 to 5 years old. The seed orchards were established at two locations in Indonesia - South Kalimantan and South Sumatra. There were three types of variance components,comprising family variance ,plot error variance, and within plot variance was derived using family variance as a percentage. A linear regression equation within plot variance was

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Hansen, J. K., H. Wellendorf, and E. D. Kjær. "Low Cost Improvement of Coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) By Application of The Breeding Seed Orchard Approach in Denmark." Silvae Genetica 54, no. 1-6 (2005): 218–27. http://dx.doi.org/10.1515/sg-2005-0032.

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Abstract An evaluation of a seedling seed orchard in Denmark of Coastal Douglas-fir showed variation between open pollinated families in their susceptibility to windthrow, height and diameter growth, stem straightness, number of forks at age 10 and bud burst at age 9. Individual narrow-sense heritability was 0.63 for bud burst, 0.40 for height and diameter, respectively, 0.48 for stem straightness, 0.20 for number of forks and 0.17 for windthrow susceptibility. Fast growing families were characterised by late bud burst, and poorer stem straightness. The approach of using seedling seed orchards

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Fogal, W. H., G. R. Larocque, S. M. Lopushanski, et al. "Nutritional and Sexual Responses of Jack Pine to Ammonium Nitrate and Gibberellins." Forest Science 45, no. 1 (1999): 136–53. http://dx.doi.org/10.1093/forestscience/45.1.136.

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Abstract The nutritional and sexual responses of jack pine (Pinus banksiana Lamb.) seed orchard trees to NH4NO3 fertilization and GA4/7 foliar sprays were examined in seedling and grafted orchards at an Ontario location where soils were low N acidic sandy loams and in a Saskatchewan grafted orchard on high N calcareous sandy clay loams. High seed strobilus abortion and low pollen strobilus production and seed yields characterized the Saskatchewan trees. NH4NO3 fertilizer increased soil NH4+ and NO3- at both locations, current-year needle N and Mg in Ontario, Fe in Saskatchewan, and Ca at both

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Shepard, Emily, Diane Doud Miller, and Gregory Miller. "Effect of Seed Weight on Emergence and Seedling Vigor of Chinese Chestnut." HortScience 24, no. 3 (1989): 516. http://dx.doi.org/10.21273/hortsci.24.3.516.

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Abstract Chinese chestnut (Castanea mollissima Bl.) has much potential as a nut-producing orchard or landscape tree, being resistant to chestnut blight [Endothia parasitica (Murr.) P.J. & H.W. Anderson] and high-yielding. Chestnut is monoecious and largely self-sterile, requiring cross-pollination to produce nuts (Sanders, 1974). There is considerable variation in nut traits, such as size and sugar content, even among nuts from the same tree (Miller, 1987), due to, in part, xenia effects. The nut is composed mostly of cotyledonary tissue with a small embryo and no endosperm (Sanders, 1974)

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Hawkins, C. DB, and K. B. Shewan. "Frost hardiness, height, and dormancy of 15 short-day, nursery-treated interior spruce seed lots." Canadian Journal of Forest Research 30, no. 7 (2000): 1096–105. http://dx.doi.org/10.1139/x00-055.

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Fifteen seed lots, five each from natural-stand, seed-orchard, and full-sib collections, of interior spruce (Picea glauca (Moench) Voss, Picea engelmannii Parry ex Engelm., and their naturally occurring hybrids) were sown in February 1993. One half of each seed lot received an ambient photoperiod (control) treatment, while the other half got a blackout (short-day) treatment. All seedlings were grown under ambient photoperiod except during the 17 days of blackout. Frost hardiness assessments were done between July and May. Blackout treatment was effective in regulating height and promoting fros

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Sijacic-Nikolic, Mirjana, and Vasilije Isajev. "Assessment of heterotic effect in serbian spruce hybrid combinations." Genetika 36, no. 3 (2004): 257–63. http://dx.doi.org/10.2298/gensr0403257s.

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The occurrence and magnitude of heterotic effect was determined among hybrid combinations and parent individuals obtained by open pollination in Serbian spruce seedling seed orchard at Godovik. The heterotic effect was analysed for cone length and width and the average number of seeds per cone. The study results show the different heterotic effect, both for the same trait in different hybrid combinations and for different traits of the same hybrid.

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Assunção, Raul Reis, Adelson Lemes da Silva Júnior, Rodolfo Soares de Almeida, Dulcinéia de Carvalho, and Lucas Amaral de Melo. "Genetic characterization of Zeyheria tuberculosa progenies and evaluation for formation of a seed orchard." Acta Scientiarum. Agronomy 46, no. 1 (2024): e66986. http://dx.doi.org/10.4025/actasciagron.v46i1.66986.

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Zeyheria tuberculosa, a native species of Brazil known for its significant potential in silviculture and genetic improvement, holds prominence among various species. In this study, our objective was to assess the diversity, genetic structure, and feasibility of establishing a seedling seed orchard (SSO) for this species. A total of 71 progenies were collected from different locations and were used in our experiment in Ijaci - MG. We genotyped 92 individuals (nine families with eight individuals, two families with seven individuals, and one family with six individuals), specifically selecting t

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., Supriyanto, and Taufik Iskandar. "PENILAIAN KESEHATAN KEBUN BENIH SEMAI Pinus merkusii DENGAN METODE FHM (FOREST HEALTH MONITORING) DI KPH SUMEDANG Health Assessment for Seedling Seed Orchard of Pinus merkusii Using FHM (Forest Health Monitoring) Method in KPH Sumedang." Journal of Tropical Silviculture 9, no. 2 (2019): 99–108. http://dx.doi.org/10.29244/j-siltrop.9.2.99-108.

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Pine (Pinus merkusii) is tree species that provides timber and gum rosin. To meet the needs of wood and non wood (gum rosin) products, planting by using superior or high quality seeds are needed. Seed procurements for planting are obtained from seedling seed orchard (SSO). However, Cijambu’s SSO was attacked by pine woolly aphid (Pineus boerneri). Therefore, assessment of Cijambu’s SSO needs to be done to evaluate the severity pest attacks that could affect to the quality and the quantity of seed production. Forest Health Monitoring (FHM) method is one of the methods to assess the health level

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da Silveira Bueno, Rafael, Emilio Badalamenti, Ettore Barone, et al. "First Assessment of Natural Regeneration and Seed Dispersal of Persian Walnut (Juglans regia L.) in Mediterranean Agroecosystems." Arboriculture & Urban Forestry 46, no. 3 (2020): 174–84. http://dx.doi.org/10.48044/jauf.2020.013.

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Persian walnut (Juglans regia L.), which is native to Central Asia, has been widely cultivated throughout Europe over millennia as a multipurpose tree. However, only recently the naturalization process outside cultivation has been studied, mostly in temperate Europe, with no information regarding the Mediterranean region. Here we provide the first field investigations about the natural regeneration of walnut in two traditional Mediterranean agroecosystems: an irrigated mixed orchard in suburban areas and a non-irrigated prickly pear (Opuntia ficusindica [L.] Mill.) orchard. The natural regener

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Kormanik, P. P., S. S. Sung, T. L. Kormanik, S. E. Schlarbaum, and S. J. Zarnoch. "Effect of acorn size on development of northern red oak 1-0 seedlings." Canadian Journal of Forest Research 28, no. 12 (1998): 1805–13. http://dx.doi.org/10.1139/x98-152.

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The effect of acorn size on seedling development was determined for 20 northern red oak (Quercus rubra L.) mother tree selections from the USDA Forest Service's Eastern Tennessee Watauga seed orchard. Acorns from each mother tree were visually separated into three size groups, weighed, and sown separately in forest nurseries located in Georgia, North Carolina, and Tennessee. Seedling height, root collar diameter, and survival within sibling seedlots were significantly related to acorn mass. The three sizes of acorns showed the same trends in seedling development among the four nurseries. Herit

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Rahma Handayani, Betty, Sri Sunarti, and Arif Nirsatmanto. "SELECTION AND GENETIC GAIN IN THIRD-GENERATION SEEDLING SEED ORCHARD OF Acacia mangium." JURNAL PEMULIAAN TANAMAN HUTAN 11, no. 1 (2017): 57–66. http://dx.doi.org/10.20886/jpth.2017.11.1.57-66.

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Gonzaga, J. M. S., R. O. Manoel, A. C. B. Sousa, et al. "Pollen contamination and nonrandom mating in a Eucalyptus camaldulensis Dehnh seedling seed orchard." Silvae Genetica 65, no. 1 (2016): 1–11. http://dx.doi.org/10.1515/sg-2016-0001.

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AbstractEucalyptus camaldulensishas potential for timber, energy, pulp and cellulose production in Brazil due to its ability to adapt to a variety of environmental conditions. The use of improved seeds, selected for economic growth traits, is necessary to increase productivity of commercial stands. Seed seedlings orchards (SSO) are one option for improved seed production. However, pollen contamination from unimproved populations, as well as non-random mating in the SSO, can decrease the predicted genetic gains in selected populations. Thus, we investigate the mating system, pollen flow and dis

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Isajev, Vasilije, and Ksenija Radotic. "Variability of peroxidase activity and heavy metal content in the needles of Austrian pine (Pinus nigra Arnold) half-sib lines." Genetika 39, no. 2 (2007): 241–50. http://dx.doi.org/10.2298/gensr0702241i.

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Enzyme activity of peroxidases of total proteins and heavy metal contents were studied in the needles of eight different half-sib lines of Austrian pine. The samples were taken from a fourteen-year-old seedling seed orchard on Jelova Gora (near Uzice). The results of this study show the pronounced variability of the concentration of total proteins, heavy metal concentration and enzyme activity of peroxidases in the study Austrian pine half-sib lines. This infers that proteins have different levels of expression in individual Austrian pine lines. Also the enzyme of peroxidases shows different a

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Jones, Wayne. "Strategies employed by Sappi Forests for improved seed production of temperate and sub-tropical pine and eucalypt species, and their hybrids, for long-term sustainability in a changing environment." Agrociencia Uruguay 27, NE2 (2023): e1247. http://dx.doi.org/10.31285/agro.27.1247.

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The annual demand and supply of genetically improved planting stock suitable for sites across varying landscapes, with changing climatic conditions and increasing pest and disease threats are becoming more complex. The agility for effective responses to long-term sustainability of commercial plantations, aimed at different markets, requires a significant investment in genetic resource acquisitions, tree breeding, land management, gene conservation and plant production systems. Tree breeding is one of our most important adaptation strategies in response to climate change and related challenges.

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Nelson, C. Dana, and Carl A. Mohn. "Genetic variance of early height growth and expected gains from selection in a Minnesota population of black spruce." Canadian Journal of Forest Research 21, no. 1 (1991): 11–19. http://dx.doi.org/10.1139/x91-002.

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A genetic improvement project for black spruce (Piceamariana (Mill.) B.S.P.) was initiated in Minnesota in 1974, with an objective of improving the inherent growth rate of the local population. This study reports some field results from the initial phase of the project. Study objectives were to (i) estimate genetic and environmental variance components of early (age 10 years) tree height, (ii) estimate expected genetic gains from various selection methods in three seedling seed orchards and a clonal seed orchard, and (iii) evaluate the effect that these selection methods have on inbreeding lev

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Muir, K., M. Byrne, E. Barbour, M. C. Cox, and J. E. D. Fox. "High Levels of Outcrossing in a Family Trial of Western Australian Sandalwood (Santalum spicatum)." Silvae Genetica 56, no. 1-6 (2007): 222–30. http://dx.doi.org/10.1515/sg-2007-0033.

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Abstract The mating system of Western Australian sandalwood (Santalum spicatum) was investigated in seed collections from a family trial. The mean outcrossing rate was high (95.2%) although there was variation among families and one family showed particularly low outcrossing, high bi-parental inbreeding and high correlated paternity. Variation in flowering time between this family and others in the trial was the most likely cause of the high inbreeding and low number of fathers contributing to the seed crop in trees from this family. The high level of outcrossing in the rest of the families in

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Adinugraha, Hamdan Adma, and Mahfudz Mahfudz. "Development of Vegetative Propagation Technology of Teak Plant in Small Holder Forest." Jurnal Wasian 1, no. 1 (2014): 39. http://dx.doi.org/10.20886/jwas.v1i1.847.

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Teak (Tectona grandis) is one of popular and important carpentry wood in Indonesia. However teak production for carpentry material cannot balance the increasing need for domestic and export market. The increased production from small holder forest can be alternative way to supply national wood need. Therefore science and technology play role to support forest productivity eg superior seedling from vegetative propagation. The preparing of superior seed took several steps i.e. selection from mother tree, genetic material extraction, grafting activity using budding technique, hedge orchard establ

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Caron, Guy E., and Ray Leblanc. "Pollen contamination in a small black spruce seedling seed orchard for 3 consecutive years." Forest Ecology and Management 53, no. 1-4 (1992): 245–61. http://dx.doi.org/10.1016/0378-1127(92)90045-b.

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Hayda, Yuriy, Svitlana Los, Roman Yatsyk, et al. "Seed orchards in Ukraine: past, present and prospects for the future." Folia Forestalia Polonica 61, no. 4 (2019): 284–98. http://dx.doi.org/10.2478/ffp-2019-0028.

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Abstract The seed orchards (SO) serve possibilities to collect seeds from the selected genotypes or to create artificial population throughout the controlled crossing of the target genotypes. Therefore, the seed material obtained from the clonal and seedling seed orchards offers unique opportunity to improve the genetic value of seeds. Thus, the seed orchards are considered as an important part of the forest seed base being the key object for both modern forestry and forestry research. This paper outlines the forest breeding activities associated with the seed production in the seed orchards i

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Juanga-Labayen, Jeanger P., and Qiuyan Yuan. "Making Biodegradable Seedling Pots from Textile and Paper Waste—Part B: Development and Evaluation of Seedling Pots." International Journal of Environmental Research and Public Health 18, no. 14 (2021): 7609. http://dx.doi.org/10.3390/ijerph18147609.

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This study evaluates the efficacy of using textile waste blended with paper waste to form biodegradable seedling pots. A bio-composite blend of cotton (20% cotton, 40% newspaper, and 40% corrugated cardboard) and polycotton (20% polycotton, 40% newspaper, and 40% corrugated cardboard) with an optimum strength was formed into seedling pots. The appreciated seedling pots (untreated blends of cotton and polycotton) were compared with the commercial pots (cardboard seed starter pot and Jiffy pot) in terms of mechanical properties (tensile strength and compressive strength), biodegradability (soil

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Kraus, John F. "Breeding Shortleaf × Loblolly Pine Hybrids for the Development of Fusiform Rust-Resistant Loblolly Pine." Southern Journal of Applied Forestry 10, no. 4 (1986): 195–97. http://dx.doi.org/10.1093/sjaf/10.4.195.

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Abstract A fusiform rust-resistant strain of loblolly pine (Pinus taeda L.) is being developed by interspecific hybridization with shortleaf pine (P. echinata Mill.). Backcrosses of the hybrid to loblolly pine have early height growth equal to loblolly pine and retain a high level of fusiform rust resistance. Previous breeding results are reviewed and updated, and new data from a developing hybrid seedling seed orchard are presented. Breeders are encouraged to develop their own hybrid programs for production of rust-resistant seedlings. South. J. Appl. For. 10:195-197, Nov. 1986.

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Sankhyan, Hari, S. Bhat, Rajan Bawa, and N. Singh. "Fodder quality evaluation of Grewia optiva drummond seed orchard in Himachal Pradesh." Journal of Non-Timber Forest Products 17, no. 3 (2010): 319–24. http://dx.doi.org/10.54207/bsmps2000-2010-x5bu87.

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A seedling seed orchard of Grewia optiva Drummond (Beul) established during 2000 at the University Campus, Solan comprising of 60 families with three replications (2 x 2 m spacing) was evaluated for fodder quality parameters, viz., ether extract, crude fibre, crude proteins, total ash contents, nitrogen free extracts and leaf dry matter contents. The variation in proximate fodder analysis among different families of Grewia optiva was found to be significant. Families SI-8, S1-13, HA-1 HA-2 and S-11 were found to be the best. Thus depicting that selections can be made among these families for f

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