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Готові списки джерел за темами / Realized Genetic Gain / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Realized Genetic Gain.

Статті в журналах з теми "Realized Genetic Gain"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

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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2

Matziris, D. "Genetic Variation and Realized Genetic Gain From Black Pine Tree Improvement." Silvae Genetica 54, no. 1-6 (2005): 96–104. http://dx.doi.org/10.1515/sg-2005-0015.

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Summary In 1978 a 10 ha clonal seed orchard of black pine (Pinus nigra Arnold) was established in the area of Koumani in the western part of Peleponnesos, Greece. The orchard comprises 52 clones derived from intensively selected plus trees in the natural forest of black pine of Peloponnesos. In 1991 three open pollinated progeny tests were established in Peloponnesos, proximal to the villages of Raches, Vlachokerasia and Vamvakou. Seedlings from 52 families including a commercial check (CC) were planted in each one of the three locations. Assessments were made when the trees were 4, 7 and 9 ye

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3

Rudolph, Thomas D., Hyun C. Kang, and Raymond P. Guries. "Realized genetic gain for 2nd-year height in jack pine." Canadian Journal of Forest Research 19, no. 6 (1989): 707–14. http://dx.doi.org/10.1139/x89-110.

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A complete cycle of within-family selection for 2nd-year height in jack pine (Pinusbanksiana Lamb.) was accomplished. The expected absolute gain from a theoretical population is 9.3%. The expected gain calculated using actual selected parental group means was 6.5% for upper selection and −6.5% for lower selection; realized gains were 5.1% for upper selection and −3.7% for lower selection. Reasons for reductions in the realized gain compared with expected gain include (i) a finite base population size; (ii) biological constraints such as inconsistent seed production; (iii) non-normal distributi

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4

Gapare, W. J. "Predicted and realized genetic gain inEucalyptus grandisbreeding seedling orchard in Zimbabwe." Southern African Forestry Journal 189, no. 1 (2000): 11–15. http://dx.doi.org/10.1080/10295925.2000.9631275.

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5

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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6

Rakonjac, Vera, Dragan Nikolic, and Milica Fotiric-Aksic. "Genetic gain from selection of vineyard peach native population." Genetika 43, no. 3 (2011): 457–63. http://dx.doi.org/10.2298/gensr1103457r.

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Vineyard peach native population in our country represents important and rich source of genetic variability. Establishment of the genetic gain and differences concerning genetic variability are very important in selection of the genotypes with different usability. In according to the start up population and after selection of 25% intensity important properties such as fruit quality indexes were examined. Those were fruit weight, output, appearance, taste, aroma, soluble solid and total sugar content and titratable acidity. Besides variability components, coefficient of variation and heritabili

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7

Ye, Terrance Z., K. J. S. Jayawickrama, and J. B. St Clair. "Realized Gains from Block-Plot Coastal Douglas-Fir Trials in the Northern Oregon Cascades." Silvae Genetica 59, no. 1-6 (2010): 29–39. http://dx.doi.org/10.1515/sg-2010-0004.

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AbstractRealized gains for coastal Douglas-fir (Pseudotsuga menziesii var. menziesii) were evaluated using data collected from 15-year-old trees from five field trials planted in large block plots in the northern Oregon Cascades. Three populations with different genetic levels (elite - high predicted gain; intermediate - moderate predicted gain; and unimproved - wild seedlot) were compared at two planting spacings (1.8 × 1.8 m and 3.6 × 3.6 m). The realized gains at age 15 averaged over both the elite and intermediate progeny were 17.2% for stand volume per hectare, 3.5% for mean height, and 4

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8

Nirsatmanto, Arif, Teguh Setyaji, and Reny Setyo Wahyuningtyas. "REALIZED GENETIC GAIN AND SEED SOURCE X SITE INTERACTION ON STAND VOLUME PRODUCTIVITY OF ACACIA MANGIUM." Indonesian Journal of Forestry Research 1, no. 1 (2014): 21–32. https://doi.org/10.59465/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 South Kal

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9

Nirsatmanto, Arif, Teguh Setyaji, and Surip Surip. "TREND OF REALIZED GENETIC GAIN OBSERVED IN SECOND-GENERATION SEEDLING SEED ORCHARDS OF ACACIA MANGIUM IN SOUTH KALIMANTAN, INDONESIA." JOURNAL OF FORESTRY RESEARCH 10, no. 1 (2013): 57–64. https://doi.org/10.20886/ijfr.2013.10.1.57-64.

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Comprehensive  tree improvement  program for Acacia mangium has been started since 1992 by establishing  a  series  of  first generation  Seedling  Seed  Orchards  (SSO)  in  Indonesia.  Selection procedures in the first-generation of SSO have completely finished, and subsequently it was continued for second-generation improvement. This paper examines a trend of realized genetic gain as a response of selection practiced in the first-generation SSO. The observation was carried out in three sub-lines of the second-generation SSO (n

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10

Khobondo, Joel. "Genetic evaluation of breeding program for body weight of indigenous chicken in Kenya." GABJ 5, no. 1 (2021): 112–19. http://dx.doi.org/10.46325/gabj.v5i1.175.

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 The demand for poultry meat, particularly from indigenous chicken, is ever increasing. This need efficient production potential from the chicken. This paper simulated different scenarios of breeding program for indigenous chicken and compared the selection response with realized genetic gain after one generation of selection. A one stage discrete generation deterministic simulation approach using SelAction program was used. Two genetic parameters were employed. The phenotypic variances and heritability used were 25,000g and 0.25, 3040 and 0.51, respectively. For each case, 300 hens and

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11

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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12

Joshi, Bal Krisna, Dhruba Bahadur Thapa, and Madan Raj Bhatta. "Genetic Parameters of Common Wheat in Nepal." Journal of Nepal Agricultural Research Council 1 (September 20, 2016): 9–13. http://dx.doi.org/10.3126/jnarc.v1i0.15718.

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Knowledge on variation within traits and their genetics are prerequisites in crop improvement program. Thus, in present paper we aimed to estimate genetic and environmental indices of common wheat genotypes. For the purpose, eight quantitative traits were measured from 30 wheat genotypes, which were in randomized complete block design with 3 replicates. Components of variance and covariance were estimated along with heritability, genetic gain, realized heritability, coheritability and correlated response. Differences between phenotypic and genotypic variances in heading days, maturity days and

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13

Clair, J. Bradley St, Nancy L. Mandel, and Keith J. S. Jayawickrama. "Early Realized Genetic Gains for Coastal Douglas-Fir in the Northern Oregon Cascades." Western Journal of Applied Forestry 19, no. 3 (2004): 195–201. http://dx.doi.org/10.1093/wjaf/19.3.195.

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Abstract Block-plot realized genetic gain trials were established for coastal Douglas-fir (Pseudotsuga menziesii var. menziesii) at five sites in the northern Oregon Cascades. The long-term objectives of these trials are to explore the growth trajectories and productivity of genetically improved stands and their relationship to predicted genetic gains based on performance in progeny tests. Measurements 5 years after planting provide an opportunity for an early assessment of realized genetic gains as compared to predicted gains and provide data for determining the number of replicates needed to

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14

Rutkoski, J. E. "Estimation of Realized Rates of Genetic Gain and Indicators for Breeding Program Assessment." Crop Science 59, no. 3 (2019): 981–93. http://dx.doi.org/10.2135/cropsci2018.09.0537.

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15

Hodge, G. R., R. A. Schmidt, and T. L. White. "Substantial Realized Gains from Mass Selection of Fusiform Rust-Free Trees in Highly Infected Stands of Slash Pine." Southern Journal of Applied Forestry 14, no. 3 (1990): 143–46. http://dx.doi.org/10.1093/sjaf/14.3.143.

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Abstract Three independent slash pine (Pinus elliottii var. elliottii) populations were formed through mass selection of fusiform rust-free individuals in stands with over 90% infection. Realized gain estimates were developed by comparing offspring from 592 selections to unimproved material in 46 progeny tests, and indicate substantial genetic gain in resistance. Across all tests of the three populations, unimproved material incurred nearly the entire possible range of infection from 0 to 100%. When both parents were rust-free selections, progeny rust infection was only two-thirds of the rust

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16

Stoehr, Michael, K. Bird, G. Nigh, J. Woods, and A. Yanchuk. "Realized Genetic Gains in Coastal Douglas-fir in British Columbia: Implications for Growth and Yield Projections." Silvae Genetica 59, no. 1-6 (2010): 223–33. http://dx.doi.org/10.1515/sg-2010-0027.

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AbstractRealized genetic gain trials for coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) at five different sites with four different spacings were assessed at age 12 to compare early gain predictions in growth from small plot progeny test designs to those obtained from large block designs. Seedlings from three genetic levels, i.e., local wild-stand controls (WS), a mid-gain seedlot (MG), and a top-cross seedlot (TC) were planted in 12 × 12 tree plots with two replications at spacings of 1.6 m, 2.3 m, 2.9 m and 4.0 m. Two replications of a “single-tree plot” design at 2.9 m spacing f

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17

Carson, Susan D., Oscar Garcia, and Judy D. Hayes. "Realized Gain and Prediction of Yield with Genetically Improved Pinus radiata in New Zealand." Forest Science 45, no. 2 (1999): 186–200. http://dx.doi.org/10.1093/forestscience/45.2.186.

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Abstract Pinus radiata D. Don seedlots of varying genetic quality were compared in block-plot genetic-gain trials at 10 locations representing most of the site types in New Zealand. Permanent sample plots were measured annually for growth from age 6-8 yr from planting to ages 15-17 (midrotation). Seedlots from first-generation open-pollinated seed orchards and a mix of crosses that all involved the top-performing parent were, respectively, on average 4.5% and 5.3% taller and had 6% and 11% larger mean diameter, 12% and 30% more basal area, and 15% and 34% more stem volume than seedlots origina

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18

Weng, Y. H., K. J. Tosh, and M. S. Fullarton. "Effects of height-growth selection on wood density in black spruce in New Brunswick, Canada." Forestry Chronicle 87, no. 1 (2011): 116–21. http://dx.doi.org/10.5558/tfc87116-1.

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Height growth was the main selection criterion for the early-stage black spruce (Picea mariana [Mill.] BSP) breeding programmein New Brunswick, which has produced significant increases in volume growth. In this study we investigate howthe height-growth selection influences growth traits and wood density. Two genetic tests, a realized gain test of large plotsand a progeny test of small plots, were used for this purpose. Wood density was measured using the Resistograph methodon the standing trees. Growth and wood density of the improved seedlots were compared with those of an unimprovedstand che

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19

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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20

Vergara, R., T. L. White, D. A. Huber, and R. A. Schmidt. "Realized Genetic Gains of Rust Resistant Selections of Slash Pine (Pinus elliottii var. elliottii) Planted in High Rust Hazard Sites." Silvae Genetica 56, no. 1-6 (2007): 231–42. http://dx.doi.org/10.1515/sg-2007-0034.

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Summary Realized gains from selection for resistance to the fungal disease fusiform rust caused by Cronartium quercuum f. sp. fusiforme were estimated using data from five field trials planted on large rectangular plots in high rust-hazard sites. These five realized gain trials, planted as a Best Management Practices study (BMP), compared resistant and susceptible mixtures of families from the first-generation breeding population of slash pine (Pinus elliottii var. elliottii Engelm.) in southeastern North America. Analyses of variance (Proc Mixed using REML in SAS), conducted to test the signi

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21

Qin, Chunlai, Chang Li, Jie Tang, et al. "Growth Performance and Realized Heritability in a Mass-Selected Strain of Silver Pomfret (Pampus argenteus)." Animals 15, no. 11 (2025): 1625. https://doi.org/10.3390/ani15111625.

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In China, the silver pomfret (Pampus argenteus) is one of the most popular marine edible fish. To analyze the genetic characteristics of P. argenteus across three generations and evaluate whether continued progress can be made in body weight and growth traits, growth traits of the third-generation P. argenteus breeding and control groups were measured at 60, 90, and 120 days post-hatch. Using Pearson correlation and path analysis, we found a strong correlation between the growth characteristics of the third-generation P. argenteus and its body weight, with fork length and body length showing t

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22

Hasnain, Sadiq, Ralph P. Overend, and René Pigeon. "Economic Analysis of the Use of Tissue Culture for Rapid Forest Improvement." Forestry Chronicle 62, no. 4 (1986): 240–45. http://dx.doi.org/10.5558/tfc62240-4.

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The economic feasibility of the use of tissue culture in forestry for planting stock production depends on two main conditions. One is the ability to produce sufficient genetic gain in a breeding program through controlled crosses, while the other depends on the utilization of the genetic gain (i.e. increased growth rate) to reduce rotation age. The cost of tissue culture plantlets will be relatively high, but will be more than compensated by the savings realized due to a shorter growth period.

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23

Nwakalor, L. N., J. S. Brinks, and G. V. Richardson. "SELECTION IN HEREFORD CATTLE II EXPECTED AND REALIZED RESPONSE." Nigerian Journal of Animal Production 8, no. 2 (2021): 112–25. http://dx.doi.org/10.51791/njap.v8i2.1934.

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Data from 14 inbred lines and 14 linecross groups of Hereford cattled at the San Juan Basin Research Centre, Hesperus, were used to evaluate expected and realized response in birth and weapling fraits and post weaning traits in males and females over a 28-year period. There were large differences in the means and variations of the performance traits among the inbreds and lineerosses, the inbreds showing in breeding depression and greater variability while the linecrosses manifested within-breed heterosis. Except for gain from weaning to 12 months, genetic progress was expected in all traits st

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24

Nirsatmanto, Arif, Teguh Setyaji, and Reny Setyo Wahyuningtyas. "Realized Genetic Gain and Seed Source X Site Interaction on Stand Volume Productivity of Acacia Mangium." Indonesian Journal of Forestry Research 1, no. 1 (2014): 21–32. http://dx.doi.org/10.20886/ijfr.2014.1.1.21-32.

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25

Nirsatmanto, Arif, Teguh Setyaji, and Reny Setyo Wahyuningtyas. "REALIZED GENETIC GAIN AND SEED SOURCE X SITE INTERACTION ON STAND VOLUME PRODUCTIVITY OF ACACIA MANGIUM." Indonesian Journal of Forestry Research 1, no. 1 (2014): 21–32. http://dx.doi.org/10.20886/ijfr.2014.1.1.24.21-32.

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26

Pounders, Cecil T., and G. Sam Foster. "Multiple Propagation Effects on Genetic Estimates of Rooting for Western Hemlock." Journal of the American Society for Horticultural Science 117, no. 4 (1992): 651–55. http://dx.doi.org/10.21273/jashs.117.4.651.

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Analysis of clonal variation for two rooting traits of western hemlock [Tsuga heteterophylla (Raf.) Sarg.] clones indicated that realized genetic gain would be improved by more effective partitioning and reduction of environmental differences associated with clones. Interactions between clones and multiple propagation dates were significant, but clone rank changes between dates were minor. Number of meted cuttings per plot (RC) and number of main roots per cutting (MR) were more highly correlated genetically (1.06) than phenotypically (0.36). Broad-sense heritabilitiesHx2 = 0.62 and Hx2 = 0.79

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27

BADU-APRAKU, B., M. OYEKUNLE, A. O. TALABI, B. ANNOR, and I. C. AKAOGU. "Changes in genetic variances and heritabilities in an early white maize population following S1 selection for grain yield, Striga resistance and drought tolerance." Journal of Agricultural Science 155, no. 4 (2016): 629–42. http://dx.doi.org/10.1017/s0021859616000770.

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SUMMARYDrought is a major constraint to maize production in West and Central Africa (WCA). Assessment of genetic gain from S1 recurrent selection under drought is crucial for the development of drought tolerance breeding strategies. In an early white population, 60 S1 families each derived from the base population and three cycles of selection were evaluated under drought and well-watered conditions at two locations in Nigeria for 2 years to determine genetic variability, gains from selection and predict response to selection for grain yield and other traits. Genetic variances generally decrea

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28

Ogbu, C. C., and C. C. Nwosu. "Genetic response to short-term index selection in females and mass selection in males of the Nigerian heavy local chicken ecotype." Nigerian Journal of Animal Production 44, no. 2 (2020): 1–17. http://dx.doi.org/10.51791/njap.v44i2.1116.

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The study aimed to determine genetic gain in growth and egg production in the Nigerian indigenous chicken (NIC) subjected to multiple trait index selection for females and mass selection for males. The experimental birds (G generation) were generated from a reference 0 population of NIC and reared according to sire families from hatch. At point of lay, females were housed individually in laying cages for egg production. Hens were selected based on index scores calculated using an index of weighted breeding values constructed from own performance in body weight at first egg (BWFE), egg weight (

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29

Weng, Y. H. "Early Realized Gains for Two-cycle Selection for Black Spruce and Their Implications for Testing Effort Allocation." Silvae Genetica 60, no. 1-6 (2011): 178–86. http://dx.doi.org/10.1515/sg-2011-0024.

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AbstractDeployment of improved black spruce (Picea mariana(Mill.) B.S.P.) seedlots in New Brunswick (NB) is a standard silvicultural practice. Most plantations have been established using elite-stand seedlots in the 1980s, first-generation seedling seed orchard seedlots in the 1990s and thereafter second-generation clonal seed orchard seedlots. A large-plot realized gain test was established at six sites in NB to provide estimates of actual gains from planting these improved seedlots. The test compared four improved seedlots, representing seedlots collecting from an elite stand, a first-genera

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30

Nirsatmanto, Arif, Budi Leksono, Susumu Kurinobu, and Susumu Shiraishi. "Realized genetic gain observed in second-generation seedling seed orchards of Acacia mangium in South Kalimantan, Indonesia." Journal of Forest Research 9, no. 3 (2004): 265–69. http://dx.doi.org/10.1007/s10310-004-0081-3.

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31

Liziniewicz, Mateusz, Bo Karlsson, and Andreas Helmersson. "Improved varieties perform well in realized genetic gain trials with Norway spruce seed sources in southern Sweden." Scandinavian Journal of Forest Research 34, no. 6 (2019): 409–16. http://dx.doi.org/10.1080/02827581.2019.1622035.

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32

Christensen, K., M. Fredholm, A. K. Winterø, J. N. Jørgensen, and S. Andersen. "Joint effect of 21 marker loci and effect of realized inbreeding on growth in pigs." Animal Science 62, no. 3 (1996): 541–46. http://dx.doi.org/10.1017/s1357729800015083.

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AbstractFour litters produced by father-daughter matings (back crosses) resulting in 35 animals with a theoretical inbreeding coefficient of 25% were typed with 21 independent informative markers. The differences between the two founder animals were estimated, based on the marker information, and it was found that the founder boar had higher genetic potential for proportion of lean meat and lower genetic potential for groivth than the founder sow. The proportion of the genome of each offspring which was identical by descent was investigated. On the basis of these markers the realized inbreedin

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33

Sandhu, Karansher Singh, Aalok Shiv, Gurleen Kaur, et al. "Integrated Approach in Genomic Selection to Accelerate Genetic Gain in Sugarcane." Plants 11, no. 16 (2022): 2139. http://dx.doi.org/10.3390/plants11162139.

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Marker-assisted selection (MAS) has been widely used in the last few decades in plant breeding programs for the mapping and introgression of genes for economically important traits, which has enabled the development of a number of superior cultivars in different crops. In sugarcane, which is the most important source for sugar and bioethanol, marker development work was initiated long ago; however, marker-assisted breeding in sugarcane has been lagging, mainly due to its large complex genome, high levels of polyploidy and heterozygosity, varied number of chromosomes, and use of low/medium-dens

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Kwon, Oh Heon, Sungwoo Lee, Jong Min Lee, and Keum Cheol Hwang. "A Compact, Low-Profile Log-Periodic Meandered Dipole Array Antenna with an Artificial Magnetic Conductor." International Journal of Antennas and Propagation 2018 (June 28, 2018): 1–10. http://dx.doi.org/10.1155/2018/7261076.

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A compact and low-profile log-periodic meandered dipole array (LPMDA) antenna with an artificial magnetic conductor (AMC) is proposed. For compactness, a meander line configuration is implemented with dipole elements and optimized using a genetic algorithm (GA) to realize the LPMDA antenna. As a result, a size reduction of approximately 30% is achieved as compared to a conventional log-periodic dipole array antenna. To enhance the gain characteristics, the AMC ground plane configuration is realized with 9 × 9 unit cells for the LPMDA antenna. Two prototypes of the proposed LPMDA antennas with

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Zhao, Xin, Wei Ping Zhao, and Song Xiang. "Longitudinal Nonlinear PID Controller Parameter Optimization of Autopilot Using Genetic Algorithm." Applied Mechanics and Materials 709 (December 2014): 252–55. http://dx.doi.org/10.4028/www.scientific.net/amm.709.252.

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This paper performed the longitudinal nonlinear PID Controller parameter optimization of general aircraft autopilot based on the longitudinal channel model and genetic algorithm. Proportion, integration and differential gain of nonlinear PID Controller is nonlinear function of controlling error. The objection function involves time integration of error’s absolute value, output of controller and system overshoot. The longitudinal controlling rate optimization of general aircraft autopilot is realized by minimizing the objection function value. Simulation results show that controller designed by

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Misztal, Ignacy, Vivian Breen, and Daniela Lourenco. "116 Using Theoretical and Realized Accuracies to Estimate Changes in Heritabilities." Journal of Animal Science 101, Supplement_3 (2023): 11. http://dx.doi.org/10.1093/jas/skad281.014.

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Abstract Under genomic selection, heritabilities for strongly selected traits are reduced, and antagonism between production and fitness traits can intensify. However, estimating genetic parameters by established methods such as REML or Bayesian with large genomic data is computationally expensive or unfeasible. In this study, we investigated the use of theoretical and realized accuracies to estimate heritabilities. The first dataset for pigs included 161k phenotypic records for a growth trait (GT), 27k phenotypic records for a fitness trait (FT), and 55k animals were genotyped. The second dat

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Que, Qingmin, Chunmei Li, Buye Li, et al. "Multi-Level Genetic Variation and Selection Strategy of Neolamarckia cadamba in Successive Years." Forests 12, no. 11 (2021): 1455. http://dx.doi.org/10.3390/f12111455.

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Neolamarckia cadamba (Roxb.) Bosser is a tropical evergreen broadleaf tree species that could play an important role in meeting the increasing demand for wood products. However, multi-level genetic variation and selection efficiency for growth traits in N. cadamba is poorly characterized. We therefore investigated the efficiency of early selection in N. cadamba by monitoring the height (HT), diameter at breast height (DBH), and tree volume (V) in 39 half-sib families from 11 provenances at ages 2, 3, 4, 5, and 6 years in a progeny test. Age-related trends in growth rate, genetic parameters in

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Nirsatmanto, Arif, and Teguh Setyaji. "Trend of Realized Genetic Gain Observed in Second-Generation Seedling Seed Orchards of Acacia Mangium in South Kalimantan, Indonesia." Indonesian Journal of Forestry Research 10, no. 1 (2013): 57–64. http://dx.doi.org/10.20886/ijfr.2013.10.1.57-64.

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Deng, Yuewen, Shao Fu, Xiaodong Du, and Qingheng Wang. "Realized Heritability and Genetic Gain Estimates of Larval Shell Length in the Chinese Pearl OysterPinctada martensiiat Three Different Salinities." North American Journal of Aquaculture 71, no. 4 (2009): 302–6. http://dx.doi.org/10.1577/a08-024.1.

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Dermail, Abil, Sompong Chankaew, Kamol Lertrat, Thomas Lübberstedt, and Khundej Suriharn. "Selection Gain of Maize Haploid Inducers for the Tropical Savanna Environments." Plants 10, no. 12 (2021): 2812. http://dx.doi.org/10.3390/plants10122812.

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Lacking elite haploid inducers performing high haploid induction rate (HIR) and agronomic performance is one of fundamental factors hindering the rapid adoption of doubled haploid technology in maize hybrid breeding, especially under tropical savanna climate. Breeding haploid inducers for specific agro-ecology, thus, is indispensable yet challenging. We used temperate inducer Stock6 as genetic source for haploid induction ability and eight tropical maize genotypes as principal donors for agronomic adaptation. Three cycles of modified ear-to-row with 5% intra-family selection were applied in a

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Serrano-León, Hernán, Anssi Ahtikoski, Johan Sonesson, et al. "From genetic gain to economic gain: simulated growth and financial performance of genetically improved Pinus sylvestris and Pinus pinaster planted stands in France, Finland and Sweden." Forestry: An International Journal of Forest Research 94, no. 4 (2021): 512–25. http://dx.doi.org/10.1093/forestry/cpab004.

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Abstract The translation of genetic gains into economic gains is important for evaluating the impact of using genetically improved forest reproductive material (FRM) in the forest sector. However, few studies based on European forests have been published to date. Here, we analyse the stand-level wood production and financial performance of planting genetically improved FRM in even-aged planted forests focusing on four European case studies with advanced breeding programme material and different management contexts: Scots pine (Pinus sylvestris L.) in southern Finland, central Sweden and centra

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Barros, José de Ribamar Silva. "Genetic breeding on the bee Melipona scutellaris (Apidae, Meliponinae)." Acta Amazonica 36, no. 1 (2006): 115–20. http://dx.doi.org/10.1590/s0044-59672006000100014.

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A selection of queens of Melipona scutellaris through the most productive colonies were carried out during eight months in an orange honeyflow. Each of the colonies was evaluated by its production, that is, the gross weight production ( pollen, brood, geopropolis and wax of each hive). With this data a coefficient of repeatability was estimated by the intraclass correlation method, obtained r = 0.835 ± 0.071. The repeatibility is very high showing that the analysed data (production) is repeatable. Selection was then carried out using the regression coefficient of each colony and the respective

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SHARMA, A. K., L. WILLMS, R. T. HARDIN, and R. T. BERG. "SELECTION RESPONSE IN A PUREBRED HEREFORD AND A MULTI-BREED SYNTHETIC POPULATION OF BEEF CATTLE." Canadian Journal of Animal Science 65, no. 1 (1985): 1–9. http://dx.doi.org/10.4141/cjas85-001.

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Phenotypic, environmental and genetic trends were estimated for birth weight, preweaning average daily gain (ADG) and weaning weight in males and females combined; postweaning ADG and yearling weight in males; and 18-mo weight in females in a purebred Hereford and a multi-breed Synthetic population of beef cattle, for the period 1966–1978, from The University of Alberta Ranch at Kinsella. Mean selection differential, heritability, expected genetic response and actual genetic response were estimated for each trait. Methods employed to estimate trends were: (1) deviation from a control populatio

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Ng, W. H., S. S. Tiang, W. H. Lim, K. H. Teng, and V. Karunamoothei. "Optimized LPDA Antenna for IoT Applications." Journal of Physics: Conference Series 2198, no. 1 (2022): 012021. http://dx.doi.org/10.1088/1742-6596/2198/1/012021.

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Abstract In this new era of fast-growing industry revolution, IoT has become integral part of most industries. In this paper, a high directivity printed log periodic dipole array (LPDA) antenna printed on a FR4 substrate is proposed for the application of IoT communication. The simulation result of NSGA-II optimized antenna is then compared and validated with another optimization scheme, MOEA\D algorithm. The simulation results demonstrate that the proposed antenna has low sidelobe level of -13.9dB with the VSWR < 2 across the dual bandwidth of 0.3027 GHz and 5.6289 GHz from 4.2166 GHz to 4

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Robisalmi, Adam, Bambang Gunadi, and Priadi Setyawan. "Evaluation of Growth Performance and Improving Genetic Gain of Blue Tilapia (<I>Oreochromis aureus</I>) Fourth-generation (F-4) at Brackish Water Pond." Jurnal Ilmiah Perikanan dan Kelautan 15, no. 1 (2023): 189–200. http://dx.doi.org/10.20473/jipk.v15i1.36069.

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Highlight Reseacrh The study showed that the selected F-4 blue tilapia had a better growth pattern than the control (non-selection) F-4 blue tilapia The difference in performance between the two populations of blue tilapia is an illustration of the genetic improvement that is passed on from parents to offspring as a result of the selective breeding The realized heritability value of the weight character of F-4 blue tilapia in the high category There was an increase in growth in the F-4 blue tilapia population with a positive response to selection Abstract Breeding program in order to increase

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Van Doormaal, B. J., and G. J. Kistemaker. "Dairy genetic improvement through artificial insemination, performance recording and genetic evaluation." Canadian Journal of Animal Science 83, no. 3 (2003): 385–92. http://dx.doi.org/10.4141/a03-023.

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Artificial insemination (AI) of dairy cattle in Canada was started more than half a century ago and today it is estimated that at least 75% of all dairy cattle nationally are bred using this common reproductive technology. A Best Linear Unbiased Prediction sire model for estimating genetic evaluations for production traits was introduced in 1975. The combination of extensive use of AI with genetic evaluations for bulls and cows has resulted in significant phenotypic and genetic gains over the past 20 yr. In the Holstein breed, mature equivalent yields have increased by an average of 200 kg mil

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Hetzel, D. J. S., and F. W. Nicholas. "Growth, efficiency and body composition of mice selected for post-weaning weight gain on ad libitum or restricted feeding." Genetical Research 48, no. 2 (1986): 101–9. http://dx.doi.org/10.1017/s0016672300024824.

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SummaryAfter seven generations of selection, a line of mice selected for post-weaning (21–42 days) weight gain on full feeding (SF) showed significant increases of 49% in weight gain, 31% in efficiency and 14% in food intake, when compared with its control on full feeding between 21 and 42 days. After day 42, SF mice continued to eat more food and were 28% heavier than control mice at 91 days. Because SF mice were heavier than control mice at almost all ages, they were fatter on an age basis. There was, however, no change in the rate of deposition of fat, protein and ash relative to body weigh

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Ding, Tongyu, Shaoqing Zhang, Liang Zhang, and Yanhui Liu. "Smart Cylindrical Dome Antenna Based on Active Frequency Selective Surface." International Journal of Antennas and Propagation 2017 (2017): 1–14. http://dx.doi.org/10.1155/2017/5901625.

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In this paper, we proposed a beamforming antenna, which is realized using an omnidirectional antenna in the center surrounded by a cylindrical smart dome. The smart dome is made of 16 active frequency selective surface columns of which the amplitude and phase response can be continuously tuned by varying the bias voltages of the employed varactors. Thus, the performance of the proposed antenna could achieve higher gain, better nulling level, and more agility than many switch methods-based cylindrical reconfigurable antennas. Moreover, in order to overcome the unavailable analytical synthesis c

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Peertile, Simone Fernanda Nedel, Aline Zampar, Juliana Petrini, et al. "Correlated responses and genetic parameters for performance and carcass traits in a broiler line." Revista Brasileira de Saúde e Produção Animal 15, no. 4 (2014): 1006–16. http://dx.doi.org/10.1590/s1519-99402014000400008.

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The growth rate of broilers has triplicated in the last decades. The body weight is used as one of the selection criteria whereas the carcass traits are valuable market requirements. Thus, the meat industry like animals with high weights at slaughter and better carcass traits. However, the genetic relation of carcass traits with several body weights is unknown. Therefore, we established genetic associations among performance and carcass traits in a broiler chicken line and estimated genetic gain and trends. We also evaluated what age of selection would lead to a more efficient indirect selecti

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McLeod, D. L., and G. W. Friars. "A comparison of individual, family, and index selection methods in Tribolium castaneum." Canadian Journal of Genetics and Cytology 28, no. 2 (1986): 301–5. http://dx.doi.org/10.1139/g86-044.

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Seven replicates of single-generation selection were used to compare genetic gain in Tribolium castaneum, using methods based on information from individuals, full-sib families, or both. Realized responses in pupa weight were greater when selection was applied in the downward as opposed to the upward direction. Although the contrasts were not all significant, the observed response in the upward direction agreed with theoretical expectations where the ranking of methods was combined first, family second, and individual last. In the downward direction, response based on the family method was bel

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