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Journal articles on the topic 'Genetic gain trial'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Breseghello, Flávio, Orlando Peixoto de Morais, and Paulo Hideo Nakano Rangel. "A new method to estimate genetic gain in annual crops." Genetics and Molecular Biology 21, no. 4 (1998): 551–55. http://dx.doi.org/10.1590/s1415-47571998000400024.

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The genetic gain obtained by breeding programs to improve quantitative traits may be estimated by using data from regional trials. A new statistical method for this estimate is proposed and includes four steps: a) joint analysis of regional trial data using a generalized linear model to obtain adjusted genotype means and covariance matrix of these means for the whole studied period; b) calculation of the arithmetic mean of the adjusted genotype means, exclusively for the group of genotypes evaluated each year; c) direct year comparison of the arithmetic means calculated, and d) estimation of m

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Corfitsen, Henrik Thyge, Betina Krantz, Agnete Larsen, and Antonio Drago. "Molecular pathway analysis associates alterations in obesity-related genes and antipsychotic-induced weight gain." Acta Neuropsychiatrica 32, no. 2 (2019): 72–83. http://dx.doi.org/10.1017/neu.2019.41.

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AbstractObjective:Antipsychotics often induce excessive weight gain. We hypothesised that individuals with genetic variations related to known obesity-risk genes have an increased risk of excessive antipsychotic-induced weight gain (AIWG). This hypothesis was tested in a subset of the Clinical Antipsychotic Trials of Intervention Effectiveness (CATIE) trial data set.Methods:The CATIE trial compared effects and side effects of five different antipsychotics through an 18-month period. Based on the maximum weight gain recorded, excessive weight gain was defined as >7% weight gain. Cytoscape an

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Gonçalves, Paulo de Souza, Adriano Tosoni da Eira Aguiar, Reginaldo Brito da Costa, Elaine Cristine Piffer Gonçalves, Erivaldo José Scaloppi Júnior, and Roberto Botelho Ferraz Branco. "Genetic variation and realized genetic gain from rubber tree improvement." Scientia Agricola 66, no. 1 (2009): 44–51. http://dx.doi.org/10.1590/s0103-90162009000100006.

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Breeding cycle in rubber extends to 20-30 years between pollination and yield assessment, distributed over three selection stages. Five hectares of small scale trial of rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.], was established in the Northwestern region of São Paulo State, Brazil. The population comprises 98 clones mostly derived from intensively selected plus tree in the natural forest of rubber tree in the Amazon. Three open pollinated progeny tests were established in three experimental stations. Seedlings from 98 progenies including a commercial check (CC) wer

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Greveniotis, Vasileios, and Vasilia A. Fasoula. "Application of prognostic breeding in maize." Crop and Pasture Science 67, no. 6 (2016): 605. http://dx.doi.org/10.1071/cp15206.

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Innovative approaches and new efficiencies in plant breeding are required to accelerate the progress of genetic improvement through selection. One such approach is the application of prognostic breeding, which is an integrated crop-improvement methodology that enables selection of plants for high crop yield potential by evaluating its two components: plant yield potential and stability of performance. Plant yield and stability are assessed concurrently in each generation by utilising the plant prognostic equation. The genetic material used for this study was 2350 F2 plants (C0) of the commerci

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Nirsatmanto, Arif, Teguh Setyaji, and Wahyuningtyas Reny Setyo. "REALIZED GENETIC GAIN AND SEED SOURCE X SITE INTERACTION ON STAND VOLUME PRODUCTIVITY OF ACACIA MANGIUM." JOURNAL OF FORESTRY RESEARCH 1, no. 1 (2014): 21–32. https://doi.org/10.20886/ijfr.2014.1.1.21-32.

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Following the results of the comprehensive tree improvement programs for Acacia mangium, it is necessary to estimate the real amount of genetic improvement and to develop an improved seed deployment strategy.  This study was aimed to verify realized genetic gain on stand volume productivity attained by the first-generation Seedling Seed Orchards (SSO) of A. mangium and to identify the magnitude of seed sources x site interaction as a basis for improved seed deployment. Seeds from five SSOs were tested together with seeds from seed stand in genetic gain trials which were established in Sou

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Kumar, S., H. S. Dungey, and A. C. Matheson. "Genetic Parameters and Strategies for Genetic Improvement of Stiffness in Radiata Pine." Silvae Genetica 55, no. 1-6 (2006): 77–84. http://dx.doi.org/10.1515/sg-2006-0012.

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Abstract The two main objectives of this study were: (1) to determine how early is it possible to undertake selection to improve the stiffness of corewood; (2) to determine if the selection based on corewood stiffness could also improve outerwood stiffness, and vice versa. Breastheight data from two progeny trials of Pinus radiata D. Don were used. In the first trial (age 30 years), data on Silviscan predicted stiffness (MoE) was obtained for each growth ring on each core sample from 50 open-pollinated families. In the second trial (age 14 years), data on static-bending MoE was obtained using

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dos Santos, Wanderley, Danilla Cristina Lemos Souza, Mário Luiz Teixeira de Moraes, and Ananda Virginia de Aguiar. "Genetic variation of wood and resin production in Pinus caribaea var. hondurensis Barret & Golfari." Silvae Genetica 65, no. 1 (2016): 31–37. http://dx.doi.org/10.1515/sg-2016-0004.

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Abstract The purpose of this work was to estimate genetic parameters and selection gain of Pinus caribaea var. hondurensis progeny trial for wood and resin production as well as correlation between them. Experiment was established in complete lattice square 10 × 10 (triple), 100 treatments, 10 plants per plot, 3 m × 3 m spacing. Twelve years after planting the trial had thinned considerably leaving six plants per plot. Twenty-seven years after planting height, diameter at breast height (dbh) and resin production were measured. Deviance analysis, genetic parameter estimates, selection expected

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Sumardi, Sumardi, Hery Kurniawan, and Prastyono Prastyono. "GENETIC PARAMETER ESTIMATES FOR GROWTH TRAITS IN AN Eucalyptus Urophylla S.T. Blake PROGENY TEST IN TIMOR ISLAND." JOURNAL OF FORESTRY RESEARCH 3, no. 2 (2016): 119–27. https://doi.org/10.20886/ijfr.2016.3.2.119-127.

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Genetic parameters were estimated for growth traits of Ampupu (<em>Eucalyptus urophylla</em> S.T. Blake) progeny test grown in Southern Central Timor - East Nusa Tenggara Province, Timor Island. When the trial was one year old data were collected from 45 half-sib open pollinated families and assessed. There were genetic variations in height and diameter among families of E. urophylla. Growth traits had moderate heritability, both individually and in family, i.e. 0.28 and 0.55 for height and 0.41 and 0.66 for diameter, respectively. Genetic correlation between height and diameter was strong (0.

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Sumardi, Sumardi, Hery Kurniawan, and Prastyono Prastyono. "GENETIC PARAMETER ESTIMATES FOR GROWTH TRAITS IN AN Eucalyptus Urophylla S.T. Blake PROGENY TEST IN TIMOR ISLAND." Indonesian Journal of Forestry Research 3, no. 2 (2016): 119–27. https://doi.org/10.59465/ijfr.2016.3.2.119-127.

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Genetic parameters were estimated for growth traits of Ampupu (Eucalyptus urophylla S.T. Blake) progeny test grown in Southern Central Timor - East Nusa Tenggara Province, Timor Island. When the trial was one year old data were collected from 45 half-sib open pollinated families and assessed. There were genetic variations in height and diameter among families of E. urophylla. Growth traits had moderate heritability, both individually and in family, i.e. 0.28 and 0.55 for height and 0.41 and 0.66 for diameter, respectively. Genetic correlation between height and diameter was strong (0.96). Howe

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Klápště, J., M. Lstibůrek, and J. Kobliha. "Initial evaluation of half-sib progenies of Norway spruce using the best linear unbiased prediction." Journal of Forest Science 53, No. 2 (2008): 41–46. http://dx.doi.org/10.17221/2136-jfs.

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The present paper deals with data obtained from fifteen years old Norway spruce (<i>Picea abies</i> [L.] Karst.) progeny test established at three sites in the Sázava River region. Parameter under the evaluation was a tree height in 15 years following the establishment of the trial. Genetic parameters were estimated using the REML (Restricted Maximum Likelihood) procedure followed by the BLUP (Best Linear Unbiased Prediction). Genetic parameters estimates were used to predict genetic gain in three alternative selection strategies. The value of gain depends on target value of gene d

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Nirsatmanto, Arif, Teguh Setyaji, Sri Sunarti, and Dwi Kartikaningtyas. "GENETIC GAIN AND PROJECTED INCREASE IN STAND VOLUME FROM TWO CYCLES BREEDING PROGRAM OF Acacia mangium." JOURNAL OF FORESTRY RESEARCH 2, no. 2 (2015): 71–79. https://doi.org/10.20886/ijfr.2015.2.2.71-79.

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Two cycles breeding program of <em>Acacia mangium</em> was practiced by Center for Forest Biotechnology and Tree Improvement Research. Although improved seed from the breeding program have been used in operational plantation, the real amount of gains in productivity was not verified together yet.  This study was aimed to observe realized genetic gain and projected increase in stand volume from the two cycles breeding of <em>A. mangium</em>, and to discuss the implications on plantation productivity and sustainable forestry in Indonesia. Improved seed from first and second-generation seed

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CHENG, L., J. MCCORMICK, A. N. HUSSEIN, et al. "Live weight gain, urinary nitrogen excretion and urination behaviour of dairy heifers grazing pasture, chicory and plantain." Journal of Agricultural Science 155, no. 4 (2017): 669–78. http://dx.doi.org/10.1017/s0021859616001076.

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SUMMARYThe objective of the present study was to investigate live weight (LW) gain, urinary nitrogen (UN) excretion and urination behaviour of dairy heifers grazing pasture, chicory and plantain in autumn and spring. The study comprised a 35-day autumn trial (with a 7-day acclimation period) and a 28-days spring trial (with a 7-day acclimation period). For each trial, 56 Friesian × Jersey heifers were blocked into five dietary treatments balanced for their LW and breeding worth (i.e. genetic merit of a cow for production and reproduction): 1·00 perennial ryegrass–white clover pasture (PA); 1·0

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Dungey, Heidi S., A. Colin Matheson, Dominic Kain, and Robert Evans. "Genetics of wood stiffness and its component traits inPinus radiata." Canadian Journal of Forest Research 36, no. 5 (2006): 1165–78. http://dx.doi.org/10.1139/x06-014.

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The potential for breeding Pinus radiata D. Don to improve wood stiffness (modulus of elasticity, MoE) was examined by obtaining pith-to-bark cores from trees at breast height in two independent genetic trials. The effectiveness of early selection for stiffness and indirect selection on the component traits, microfibril angle (MfA) and wood density, was determined as well as the age-related changes in the genetic variation of these traits. The first trial comprised 50 open-pollinated families in the central North Island, New Zealand. The second trial comprised 20 control-pollinated families in

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Ozbey, Alper, and Nebi Bilir. "BLOCK EFFECT ON GENETIC PARAMETERS IN A 23-YEAR-OLD PROGENY TRIAL OF PINUS BRUTIA." Forestry Engineering Journal 12, no. 2 (2022): 5–13. http://dx.doi.org/10.34220/issn.2222-7962/2022.2/1.

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Many environmental and biological factors could be effective on estimation of genetic parameters in progeny trials. Number of blocks (also called as replicate) is one of the most important environmental factors in these estimations. Effect of block scenarios on genetic parameters were investigated based on height and diameter at breast height in a 23-year-old progeny trial established by 4 blocks of seed stand and seed orchard seedlings of Turkish red pine (Pinus brutia Ten.) in this study. Averages were 14.14 m for tree height and 17.69 cm for diameter at breast height in polled seed sources.

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Suseno, Ambar Dwi, Yossa Istiadi, and Sata Yoshida Srie Rahayu. "Prediction of expected genetic gain in progeny test of Samama [Anthocephalus macrophyllus (Roxb.) Havil.] in West Seram District, Maluku Province, Indonesia." Indonesian Journal of Applied Environmental Studies 2, no. 1 (2021): 25–32. http://dx.doi.org/10.33751/injast.v2i1.2862.

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The research objective is to find out genetic variation, estimated heritability value and the expected genetic gain of Samama [Anthocephalus macrophyllus (Roxb.) Havil.] on variation in stem diameter and plant height as superior seed producers. The research was conducted in Uraur Village, West Seram Regency, Maluku Province. The trials consisted of 80 families. All of the trials were laid out in randomized complete block designs (RCBD), 4-trees plots with 4 replications (blocks) at spacing of 5m×2m. Data collection was carried out for 2 months (February to March 2020) and was focused on observ

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Widya Suseno, Eka, and Alfian Ma'arif. "Tuning of PID Controller Parameters with Genetic Algorithm Method on DC Motor." International Journal of Robotics and Control Systems 1, no. 1 (2021): 41–53. http://dx.doi.org/10.31763/ijrcs.v1i1.249.

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Proportional Integral Derivative (PID) controllers are used in general to control a system, for example a DC motor system. The difficulty of using the controller is parameter tuning, because the tuning parameters still use the trial and error method to find the PID parameter constants, namely Proportional Gain (KP), Integral Gain (KI) and Derivative Gain (KD). In this case, the genetic algorithm method is used which can give better results in each iteration. Genetic algorithms are one of the smart methods inspired by the process of natural selection, the process that causes biological evolutio

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Magnussen, S., and C. T. Keith. "Genetic Improvement of Volume and Wood Properties of Jack Pine: Selection Strategies." Forestry Chronicle 66, no. 3 (1990): 281–86. http://dx.doi.org/10.5558/tfc66281-3.

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Six selection strategies aimed at genetically improving volume production and wood quality factors such as density, heartwood content, and stem taper are compared in a 20-year-old jack pine progeny trial. Selection indices were computed under various assumptions about economic values of the traits under selection and with contraints on the magnitude and direction of expected genetic gain. Stem taper, wood density, and heartwood content were under strong genetic control; however, the low phenotypic variation of wood density limits its potential for genetic improvement. Heartwood content emerged

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Budeanu, Marius, Flaviu Popescu, Emanuel Besliu, and Ecaterina Nicoleta Apostol. "Diallel crossing (10x10) in Swiss stone pine. Juvenile-adult correlations and genetic gain for predicting forward selection." Annals of Forest Research 67, no. 2 (2024): 109–20. https://doi.org/10.15287/afr.2024.3770.

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Swiss stone pine (Pinus cembra) is a viable solution for afforestation in the high mountain zone, at the upper limit of the forests, due to the species adaptation ability to the limiting climatic conditions. The aim of this study was to analyse the genetic variability, inheritance rate and juvenile-adult correlations, in a 26 years full-sib (10x10 complete mating design) trial, in order to predict the genetic gain of forward selection. In the spring of 2023, measurements and evaluations were carried out for all the existing trees, for Survival rate (Sr), growth (Diameter as breast height- Dbh,

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Suseno, Eka Widya, Alfian Ma'arif, and Riky Dwi Puriyanto. "Tuning Parameter Pengendali PID dengan Metode Algoritma Genetik pada Motor DC." TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol 8, no. 1 (2022): 1–13. http://dx.doi.org/10.15575/telka.v8n1.1-13.

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Saat ini, pengendali Proportional Integral Derivative (PID) digunakan secara umum untuk mendapatkan solusi optimum. Solusi dikatakan optimum apabila output di kehidupan nyata sesuai dengan output yang telah ditentukan. Oleh karena itu, pengendali adalah suatu hal yang dibutuhkan. Tantangan dalam menggunakan pengendali adalah tuning parameter untuk mencari konstanta parameter PID seperti Proporsional Gain (KP), Waktu Integral (KI) dan Waktu Derivatif (KD). Untuk memaksimalkan kinerja motor DC, pengaturan pengendali PID yang tepat merupakan hal yang sangat penting. Desain pengendali PID sebagai

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Kammula, Ashwin V., Alejandro A. Schäffer, and Padma Sheila Rajagopal. "Characterization of Oncology Clinical Trials Using Germline Genetic Data." JAMA Network Open 5, no. 11 (2022): e2242370. http://dx.doi.org/10.1001/jamanetworkopen.2022.42370.

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ImportanceThe recent successes of poly-ADP ribose polymerase (PARP) inhibitors and belzutifan support germline genetic data as an exciting, accessible source for biomarkers in cancer treatment. This study hypothesizes, however, that most oncology clinical trials using germline data largely prioritize BRCA1/2 as biomarkers and PARP inhibitors as therapy.ObjectiveTo characterize past and ongoing oncology trials that use germline data.Design, Setting, and ParticipantsThis retrospective cross-sectional study of oncology trials used the Informa Trialtrove database to evaluate trial attributes. Tria

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Dutkowski, Gregory W., João Costa e. Silva, Arthur R. Gilmour, and Gustavo A. Lopez. "Spatial analysis methods for forest genetic trials." Canadian Journal of Forest Research 32, no. 12 (2002): 2201–14. http://dx.doi.org/10.1139/x02-111.

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Spatial analysis, using separable autoregressive processes of residuals, is increasingly used in agricultural variety yield trial analysis. Interpretation of the sample variogram has become a tool for the detection of global trend and "extraneous" variation aligned with trial rows and columns. We applied this methodology to five selected forest genetic trials using an individual tree additive genetic model. We compared the base design model with post-blocking, a first-order autoregressive model of residuals (AR1), that model with an independent error term (AR1η), a combined base and autoregres

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Câmara, Adriano Rodrigues, Joenes Mucci Peluzio, Lenio Urzeda Ferreira, Odilon Lemos de Mello Filho, Samuel Leandro Soares, and Flávio Sérgio Afférri. "Improving soybean industrial quality through interspecific crossing." OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA 22, no. 12 (2024): e8200. https://doi.org/10.55905/oelv22n12-123.

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Interspecific crosses between G. max and G. soja were made for obtaining segregating populations in order to estimate genetic parameters, genetic and phenotypic correlation, potential genetic gain and correlated response. For this, the segreganting populations and their parents were evaluated for grain protein, oil and fatty acids contents in an augmented blocks trial design. Then, a Linear Mixed Model was adjusted for estimating variance components and genetic effects. The conclusion was the use of G. soja lines, through crossing with G. max lines, has potential to obtaining segragating popul

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Vidovic, V., D. Lukac, Lj Strbac, D. Punos, and M. Stupar. "Genetic trends using different criteria of selection on specialized breeds in pigs." Biotehnologija u stocarstvu 27, no. 4 (2011): 1779–86. http://dx.doi.org/10.2298/bah1104779v.

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The trial had included 8 generations of pigs and last 10 years of has been done at 4 different breeds: Landrace and Yorkshire as dam line and Duroc and Pietrain as a sire line. Trial included 62 sires, 1794 dams, 5694 progeny and slaughtered 838 heads in total. To examine fixed and random effects LS MME model has been used. Installed different selection criteria for L, Y and D, P showed positive and expected improvement. There are know significant differences at age of slaughter between L,Y and D, P showed significantly lower gain and logger age. Genetic trends for certain traits for all used

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Roche, Daniel J. O., Constantine J. Trela, Maria Argos, et al. "Lack of Association between Opioid-Receptor Genotypes and Smoking Cessation Outcomes in a Randomized, Controlled Naltrexone Trial." Alcohol and Alcoholism 54, no. 5 (2019): 559–65. http://dx.doi.org/10.1093/alcalc/agz046.

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Abstract Aims The present study examined how variation in mu- (OPRM1), kappa- (OPRK), and delta- (OPRD) opioid receptor genes may influence the efficacy of naltrexone in the context of a smoking cessation trial. Methods The study’s primary objective was to examine the association of the Asn40Asp OPRM1 single nucleotide polymorphism (SNP) with naltrexone’s effects on smoking quit rate, weight gain, and heavy drinking behavior during a double-blind, randomized clinical trial in 280 adult DSM-IV nicotine-dependent participants. The secondary goal of the study was to examine the relationship of 20

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Silva, P. H. M., A. Brune, S. Pupin, M. L. T. Moraes, A. M. Sebbenn, and R. C. de Paula. "Maintenance of genetic diversity in Eucalyptus urophylla S. T. Blake populations with restriction of the number of trees per family." Silvae Genetica 67, no. 1 (2018): 34–40. http://dx.doi.org/10.2478/sg-2018-0005.

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Abstract Our aim was to verify the effect on gain and genetic diversity through the restriction of the number of trees per family in selection, in order to compose an elite population of Eucalyptus urophylla in two trials under distinct management levels. We studied 166 open-pollinated families of E. urophylla in Anhembi, Sao Paulo State, Brazil under commercial practices, and the same families in Selvíria, Mato Grosso do Sul State, Brazil under lower management level (mainly no mineral fertilization). Mortality, height and diameter at breast height (DBH) were measured. DBH was analyzed by

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Reed, Xylena, Artur Schumacher-Schuh, Jing Hu, and Sara Bandres-Ciga. "Advancing Personalized Medicine in Common Forms of Parkinson’s Disease through Genetics: Current Therapeutics and the Future of Individualized Management." Journal of Personalized Medicine 11, no. 3 (2021): 169. http://dx.doi.org/10.3390/jpm11030169.

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Parkinson’s disease (PD) is a condition with heterogeneous clinical manifestations that vary in age at onset, rate of progression, disease course, severity, motor and non-motor symptoms, and a variable response to antiparkinsonian drugs. It is considered that there are multiple PD etiological subtypes, some of which could be predicted by genetics. The characterization and prediction of these distinct molecular entities provides a growing opportunity to use individualized management and personalized therapies. Dissecting the genetic architecture of PD is a critical step in identifying therapeut

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Widdup, K. H., and B. A. Barrett. "Achieving persistence and productivity in white clover." NZGA: Research and Practice Series 15 (January 1, 2011): 173–80. http://dx.doi.org/10.33584/rps.15.2011.3206.

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White clover (Trifolium repens) is a valuable forage and soil fertility resource whose persistence and contribution to production and profitability can be constrained by genetic, farm management, and environmental factors. Here we outline the growth stages of the plant, and factors affecting persistence at the plant and the population level in pasture. Breeding strategies that bring together new germplasm sources within white clover have improved persistence on farm. New experimental lines, including some accessing genetics from related Trifolium species, show advances in forage productivity a

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Nirsatmanto, Arif, Teguh Setyaji, Sri Sunarti, and Dwi Kartikaningtyas. "GENETIC GAIN AND PROJECTED INCREASE IN STAND VOLUME FROM TWO CYCLES BREEDING PROGRAM OF Acacia mangium." Indonesian Journal of Forestry Research 2, no. 2 (2015): 71–79. https://doi.org/10.59465/ijfr.2015.2.2.71-79.

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Two cycles breeding program of Acacia mangium was practiced by Center for Forest Biotechnology and Tree Improvement Research. Although improved seed from the breeding program have been used in operational plantation, the real amount of gains in productivity was not verified together yet. This study was aimed to observe realized genetic gain and projected increase in stand volume from the two cycles breeding of A. mangium, and to discuss the implications on plantation productivity and sustainable forestry in Indonesia. Improved seed from first and second-generation seed orchard were tested toge

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Jiwuba, Lydia, Alex Ogbonna, Ugochukwu Ikeogu, et al. "Analysis of inbreeding depression in five S1 Cassava families of elite varieties at the seedling nursery and clonal evaluation trial stages." F1000Research 13 (August 27, 2024): 966. http://dx.doi.org/10.12688/f1000research.153922.1.

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Background Cassava is an outcrossing, highly heterozygous plant that is reported to suffer from inbreeding depression. However, unraveling recessive traits and exploring additive genes would require a limited level of inbreeding for the genetic improvement of cassava. Method The impact of inbreeding depression (ID) on agronomic and biotic tolerance of cassava was evaluated using the S1 progenies of five African cassava varieties (TMS 30572, TME 419, TMS 98/0505, TMS 01/1371, and TMS 98/0002) at the seedling and clonal evaluation stages. Results At both trial stages, the effects of ID were seve

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Matisons, Roberts, Oskars Krišāns, Diāna Jansone, Āris Jansons, and Pauls Zeltiņš. "The genetic and environmental variance of radial increment in Scots pine of south-eastern Baltic provenances in response to weather extremes." Baltic Forestry 30, no. 1 (2024): id719. http://dx.doi.org/10.46490/bf719.

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Intensification of weather anomalies, particularly those related to temperature in warming winters and moisture availability, have been identified as the major emerging climatic threats to forest ecosystems in the hemiboreal zone. Considering the large-scale nature of the threats, assisted migration and tree breeding appear as the most promising means for mitigating the climatic risks. However, for successful implementation of such means, information on the genetic control over the weather sensitivity of trees is needed. Local genetic adaptations of populations occur to maximize competitivenes

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Shaw, D. V., R. S. Bringhurst, and V. Voth. "Genetic Parameters Estimated for an Advanced-cycle Strawberry Breeding Population at Two Locations." Journal of the American Society for Horticultural Science 114, no. 5 (1989): 823–27. http://dx.doi.org/10.21273/jashs.114.5.823.

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Abstract Strawberry (Fragaria × ananassa) seedlings were evaluated for yield, fruit weight, and commercial appearance in two field trials established in 1985 and 1986. Genetic analyses for unbalanced diallels were performed to quantify genetic, environmental, and interaction variance for each trial separately, and for crosses common to two locations in a single year. When data from crosses common to two test locations were analyzed simultaneously, narrow-sense heritabilities (h2) averaged 0.35 (±0.11), 0.21 (±0.07), and 0.08 (±0.06) for yield, fruit weight, and appearance score. Broad-sense he

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Sunarti, S., A. Nirsatmanto, J. Brawner, et al. "EFFECT OF GENETIC GAIN IN DIAMETER AND WOOD DENSITY ON ADVANCED GENERATION BREEDING STRATEGY OF ACACIA MANGIUM IN INDONESIA." JOURNAL OF TROPICAL FOREST SCIENCE 34, no. 1 (2022): 92–102. http://dx.doi.org/10.26525/jtfs2022.34.1.92.

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Breeding of Acacia mangium in Indonesia was initially focused on selection for improving growth and stem form. Changes in wood density which resulted from selection for improved growth was impacted by adverse correlation between the both traits. This study aimed to quantify genetic gain in the diameter and wood density from two A. mangium breeding generations and to use this information in developing breeding strategy to improve both traits simultaneously. Materials were obtained from 4.5-year-old trees in a progeny trial consisting of families from first (F-1) and second (F-2) generations alo

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Budeanu, Marius, Flaviu Popescu, Emanuel Besliu, and Ecaterina Nicoleta Apostol. "Adaptability of Swiss Stone Pine (Pinus cembra) in Two Different Environmental Conditions of Romanian Carpathians." Applied Sciences 14, no. 16 (2024): 7428. http://dx.doi.org/10.3390/app14167428.

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Swiss stone pine (Pinus cembra) is a feasible solution for increasing the resistance of future mixed spruce–pine stands to windfall at the upper altitudinal limit of Romanian forests. This study aims to analyze the adaptability of ten full-sib families in two different environmental conditions and their evolution in time for predicting forward selection. At a seedling age of 33, evaluations were carried out for survival rate (Sr), growth (diameter at breast height—Dbh, and trees’ height), and branch traits, as well as for stem straightness. The high level of genetic variability, inheritance ra

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Fries, Anders, and Dag Lindgren. "Performance of plus tree progenies of Pinuscontorta originating north of latitude 55° N in a Swedish trial at 64° N." Canadian Journal of Forest Research 16, no. 3 (1986): 427–37. http://dx.doi.org/10.1139/x86-079.

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This paper deals with the results from a half-sib progeny trial of lodgepole pine (Pinuscontorta ssp. latifolia Engelm.) in Sweden at 64° N. The progenies originate from 69 open-pollinated plus trees selected from 13 areas in British Columbia and the Yukon. The trial was planted on previous agricultural land. At age 10 years, condition and height growth differed significantly between areas of origin and between half-sib families. Northern material was healthier and more vigorous and height growth did not vary clinally with latitude. Stepwise regression analysis with height growth showed that a

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Marcu, Nicu, Marius Budeanu, Ecaterina Nicoleta Apostol, and Raul Gheorghe Radu. "Valuation of the Economic Benefits from Using Genetically Improved Forest Reproductive Materials in Afforestation." Forests 11, no. 4 (2020): 382. http://dx.doi.org/10.3390/f11040382.

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The research objective was to demonstrate the economic impact of using, in afforestation, forest reproductive materials (FRMs) obtained from seed trees selected in the most valuable Norway spruce populations of the FGRs’ (forest genetic resources’) category. The values obtained for the main growth traits (diameter at breast height (Dbh), tree height (Th), and tree volume (Tv)), both in the FGR and in the closest population (with the same age and growth in similar environmental conditions), were compared. Three comparative trials were analyzed, each belonging to different breeding levels: Open-

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Hannerz, Mats, Sally N. Aitken, John N. King, and Sonya Budge. "Effects of genetic selection for growth on frost hardiness in western hemlock." Canadian Journal of Forest Research 29, no. 4 (1999): 509–16. http://dx.doi.org/10.1139/x99-019.

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Fall and spring frost hardiness was determined from electrolytic leakage of artificially frozen needle segments in 22 full-sib families of western hemlock (Tsuga heterophylla (Raf.) Sarg.) from British Columbia and Washington State representing different levels of genetic gain, and of four provenance materials (stand progenies from the Queen Charlotte Islands, Vancouver Island, and Oregon Cascades, and seed-orchard progenies from the northern Oregon Coast Range). Samples for freeze testing were collected in a 5-year-old trial at Jordan River on southwestern Vancouver Island. Height and date of

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Lin, Yu Pei, and Yong Wang. "Quantum Genetic Optimization of Spindle Speed Ratio in Numerical Control Lathe with Automatic Transmission." Applied Mechanics and Materials 271-272 (December 2012): 1077–81. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.1077.

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Determination of spindle rotate speed of lathe is an important issue when machine tools with changeable spindle gear ratio cutting metal parts, especially in heavy load cutting. Genetic optimization is used to automate design in engineering application for minimizing volume or weight. A quantum genetic optimization method was applied to calculate rotate speed and ratio of spindle transmission for gain maximum motor efficiency in numerical control lathe. Quantum bit code way was applied to simplify calculation and improve compatibility. Rotate angle strategy gate were introduced to Quantum gate

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Hudzenko, Volodymyr, Liudmila Khudolii, Semen Tanchyk, et al. "Evaluation of Genetic Gain in Newly Developed Winter Barley Varieties for Grain Yield and Related Traits." Romanian Agricultural Research 39 (2022): 123–32. http://dx.doi.org/10.59665/rar3912.

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As a result of multi-year trial (2012/13-2016/17) there have been proved statistically significant breeding and genetic improvement of yield, its stability and level of manifestation yield-related traits in new winter barley varieties Paladin Myronivskyi, MIP Yason, MIP Oskar, and MIP Hladiator compared to the old Myronivka variety Bemir 2. The winter barley varieties MIP Yason and Paladin Myronivskyi were characterized with optimal combination of yield and its stability according to the AMMI model. When using statistical and graphical analysis, the winter barley varieties MIP Hladiator and MI

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Murillo, O., M. D. V. de Resende, Y. Badilla, and J. P. Gamboa. "Genotype by environment interaction and teak (Tectona grandis L.) selection in Costa Rica." Silvae Genetica 68, no. 1 (2019): 116–21. http://dx.doi.org/10.2478/sg-2019-0020.

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Abstract A teak progeny trial was established with four replicates at different sites along the northern Pacific region of Costa Rica. The trials followed a randomized block design, with 28 open pollinated families and 36 seedlings per family per site. Data from 7 years-old trees was analyzed both for each test location separately and for all locations combined. High individual heritability was found for diameter, which translates to higher breeding potential. The all locations combined analysis showed high genetic variation, with individual heritabilities reaching up to 22 %. Genotype by Envi

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Yildirim, K., H. Öztürk, S. Siklar, O. D. Balkiz, and Z. Kaya. "Strong Genetic Control of High Wood Specific Gravity in Young Progenies of Pinus brutia: Potential of Early Selection for Industrial Plantations." Silvae Genetica 60, no. 1-6 (2011): 249–58. http://dx.doi.org/10.1515/sg-2011-0033.

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AbstractTo increase quality and amount of wood production in Turkish red pine (Pinus brutiaTen.), genetic control of wood specific gravity (WSG), tracheid length and growth traits was investigated in Ceyhan1A progeny trial by evaluating 168 families originated from six clonal Turkish red pine seed orchards. Wood samples were taken by destructive sampling during the rouging of this trial at the age of seven. Differences among the 168 families for mean WSG was large (ranged from 0.35 to 0.62), as indicated by high individual (0.42±0.07) and family mean (0.55±0.03) heritabilities. Family differen

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Govanakoppa, Nagappa, Anilkumar, H, Anitha, S., Jagadeesh, B. R., and Jakir Hussain, K. N. "Genetic Studies on Variability, Heritability and Genetic Gain of Yield and Yield Related Traits in Foxtail Millets (Setaria italic L.)." Journal of Advances in Biology & Biotechnology 27, no. 11 (2024): 579–90. http://dx.doi.org/10.9734/jabb/2024/v27i111642.

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The present work comprised of 40 foxtail millet advanced breeding lines obtained from small millet scheme, MARS, Dharwad. These lines with checks viz., DHFT-109-3 and HMT-100-1 were evaluated in replicated yield trial at millet scheme, MARS, Dharwad, during rabi 2020-21 for assessing genetic variability, heritability, and genetic gain among 17 traits. Wide range of variation provides an ample scope for selection of superior and desired advanced breeding lines by the plant breeders for further improvement of these characters. The phenotypic coefficient of variation (PCV) was higher than genotyp

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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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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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Dutkowski, Gregory W., João Costa e Silva, Arthur R. Gilmour, Hubert Wellendorf, and Alexandre Aguiar. "Spatial analysis enhances modelling of a wide variety of traits in forest genetic trials." Canadian Journal of Forest Research 36, no. 7 (2006): 1851–70. http://dx.doi.org/10.1139/x06-059.

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Spatial analysis of progeny trial data improved predicted genetic responses by more than 10% for around 20 of the 216 variables tested, although, in general, the gains were more modest. The spatial method partitions the residual variance into an independent component and a two-dimensional spatially autocorrelated component and is fitted using REML. The largest improvements in likelihood were for height. Traits that exhibit little spatial structure (stem counts, form, and branching) did not respond as often. The spatial component represented up to 50% of the total residual variance, usually sub

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Smith, K. F., and G. A. Kearney. "Improving the power of pasture cultivar trials to discriminate cultivars on the basis of differences in herbage yield." Australian Journal of Agricultural Research 53, no. 2 (2002): 191. http://dx.doi.org/10.1071/ar01012.

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A review of 7 recently published perennial ryegrass cultivar trials (from 6 contrasting environments) with data expressed as an aggregate of seasonal harvests (autumn, winter, spring, and summer) revealed that the l.s.d. (P = 0.05) varied between 4 and 255% of the mean herbage yield of the trial in a given season, with 56 of 72 data points having an l.s.d. (P = 0.05) >10% of the trial mean. Power analysis of a perennial ryegrass trial that was conducted at Heywood (Vic.) from 1997 to 1998, with a 16% apparent difference in the total yield of a new synthetic and commercial cultivars, demonst

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Hannrup, Björn, and Inger Ekberg. "Age-age correlations for tracheid length and wood density in Pinus sylvestris." Canadian Journal of Forest Research 28, no. 9 (1998): 1373–79. http://dx.doi.org/10.1139/x98-124.

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The existence of strong genetic correlations between traits at an early age and at an adult age should shorten the generation turnover of tree breeding populations and render forest tree breeding more effective. Genetic age-age correlations for tracheid length and wood density were estimated in Scots pine (Pinus sylvestris L.) and the efficiency of early selection for these traits was evaluated. Increment cores of 10-mm diameter were collected from trees of 106 full-sib families in a progeny trial located in southeastern Sweden and consisting of controlled matings between 30 parent trees. The

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Budeanu, Marius, Flaviu Popescu, Ecaterina Nicoleta Apostol, Ioana Maria Pleșca, and Emanuel Besliu. "Adaptability of twelve European provenances of Pinus cembra in two different branches of the Carpathians." Silvae Genetica 74, no. 1 (2025): 63–76. https://doi.org/10.2478/sg-2025-0007.

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Abstract Swiss stone pine (Pinus cembra L.) is a promising species for afforestation at the upper altitudinal limit of the forests due to its adaptability to more difficult climatic conditions. The study aims to analyze the genetic variability, testing site influence, trait-trait and juvenile-adult correlations across two 27-years-old provenance trials. The primary goal was to identify the best-performing provenances, set the suitable breeding strategies, and predicting the optimal age for forward selection. In the spring of 2024, measurements and evaluations were made for survival, diameter a

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Pugh, Sian Alexandra, Enric Domingo, Susan D. Richman, et al. "Analysis of primary and acquired resistance to cetuximab from multiomic data in the New EPOC trial." Journal of Clinical Oncology 41, no. 16_suppl (2023): 3577. http://dx.doi.org/10.1200/jco.2023.41.16_suppl.3577.

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3577 Background: The use of cetuximab (cetux) with chemotherapy (chemo) in patients with operable liver metastases from colorectal cancer (CRC) conferred a survival disadvantage in New EPOC. Whilst genetic alterations such as emergent sub-clonal mutations in RAS/ BRAF, ERBB2 and MET are recognized as mechanisms of resistance to EGFR inhibition (EGFRi), divergent mechanisms such as transcriptomic changes may also be responsible. Of the CRC intrinsic subtypes (CRIS), CRIS-C has elevated EGFR signalling and is thought to have greater sensitivity to EGFRi. Methods: Resected primary tumors (n = 205

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Handayani, B. R., S. Sunarti, A. Nirsatmanto, T. Setyaji, D. Kartikaningtyas, and S. Surip. "Impact of within family variation on growth superiority of improved seeds of Eucalyptus pellita observed in genetic gain trial." IOP Conference Series: Earth and Environmental Science 522 (July 10, 2020): 012003. http://dx.doi.org/10.1088/1755-1315/522/1/012003.

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Hagen, Chloe S., Laura L. Greiner, Joel Spencer, and Gregory Krahn. "160 The Compensatory Growth of Finishing Pigs Fed Increasing Dietary Lysine Following a Period of Nutrient Restriction." Journal of Animal Science 100, Supplement_2 (2022): 76–77. http://dx.doi.org/10.1093/jas/skac064.123.

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Abstract The objective of this experiment was to evaluate the degree of compensatory gain in finishing hogs when fed increasing levels of lysine during the re-alimentation period after being fed a restrictive 97% corn diet for 3 or 6 weeks. One hundred and forty mixed-sex pens (DNA Genetics, Columbus, NE) with a starting body weight of 73.5 ± 2.2 kg were blocked by starting bodyweight and assigned to a 2:3:1 factorial. Twenty replicates of seven treatments were comprised of 2 restriction lengths [3 weeks (3W) vs. 6 weeks (6W)], and 3 lysine inclusion levels at re-alimentation (Lys:ME: 100%, 11

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Carson, S. D., M. O. Kimberley, J. D. Hayes, and M. J. Carson. "The effect of silviculture on genetic gain in growth of Pinus radiata at one-third rotation." Canadian Journal of Forest Research 29, no. 12 (1999): 1979–84. http://dx.doi.org/10.1139/x99-152.

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A trial planted on six sites representing five growth modelling regions and a range of site qualities in New Zealand was used to examine the interaction of silviculture and genetic improvement in Pinus radiata D. Don. Four seed lots with differing genetic potential for growth were grown under four stocking treatments from 100 to 600 stems/ha, all with a thinning ratio of 5:2. In addition, two treatments were planted at 500 stems/ha, one pruned and one unpruned. Among sites, differences were large for mean top height (8.1-13.9 m), basal area (7.9-21.5 m2/ha), and volume (25-108 m3/ha) at 8 year

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