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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
18/12/2017 |
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Actualizado : |
15/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
LOURENCO, D.A.L.; FRAGOMENI, B.O.; BRADFORD, H.L.; MENEZES I.R.; FERRAZ, J.B.S.; AGUILAR, I.; MISZTAL, I. |
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Afiliación : |
D.A.L. LOURENCO, Universidad de Georgia (UG); B.O. FRAGOMENI, Universidad de Georgia (UG); H.L. BRADFORD, Universidad de Georgia (UG); I.R. MENEZES, FZEA, University of Sao Paulo.; J.B.S. FERRAZ, FZEA, University of Sao Paulo.; IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; I. MISZTAL, Universidad de Georgia (UG). |
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Título : |
Implications of SNP weighting on single-step genomic predictions for different reference population sizes. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Journal of Animal Breeding and Genetics, 2017, v. 134 (6), p. 463-471. |
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DOI : |
10.1111/jbg.12288 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 28 February 2017 / Accepted: 19 July 2017.
This study was partially funded by the American Angus Association (St. Joseph, MO), Zoetis (Kalamazoo, MI) and by Agriculture and Food Research Initiative Competitive Grants no. 2015-67015-22936 from the US Department of Agriculture's National Institute of Food and Agriculture. We gratefully acknowledge the very helpful comments by the two anonymous reviewers, and we thank Andra H. Nelson for assisting with data analysis. |
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Contenido : |
ABSTRACT.
We investigated the importance of SNP weighting in populations with 2,000 to 25,000 genotyped animals. Populations were simulated with two effective sizes (20 or 100) and three numbers of QTL (10, 50 or 500). Pedigree information was available for six generations; phenotypes were recorded for the four middle generations. Animals from the last three generations were genotyped for 45,000 SNP. Single-step genomic BLUP (ssGBLUP) and weighted ssGBLUP (WssGBLUP) were used to estimate genomic EBV using a genomic relationship matrix (G). The WssGBLUP performed better in small genotyped populations; however, any advantage for WssGBLUP was reduced or eliminated when more animals were genotyped. WssGBLUP had greater resolution for genome-wide association (GWA) as did increasing the number of genotyped animals. For few QTL, accuracy was greater for WssGBLUP than ssGBLUP; however, for many QTL, accuracy was the same for both methods. The largest genotyped set was used to assess the dimensionality of genomic information (number of effective SNP). The number of effective SNP was considerably less in weighted G than in unweighted G. Once the number of independent SNP is well represented in the genotyped population, the impact of SNP weighting becomes less important.
© 2017 Blackwell Verlag GmbH |
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Palabras claves : |
ACCURAY; BAYES B; SNP WEIGHTING; VARIABLE SELECTION; WEIGTED SSGBLUP. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02612naa a2200277 a 4500
001 1057902
005 2019-10-15
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1111/jbg.12288$2DOI
100 1 $aLOURENCO, D.A.L.
245 $aImplications of SNP weighting on single-step genomic predictions for different reference population sizes.$h[electronic resource]
260 $c2017
500 $aArticle history: Received: 28 February 2017 / Accepted: 19 July 2017. This study was partially funded by the American Angus Association (St. Joseph, MO), Zoetis (Kalamazoo, MI) and by Agriculture and Food Research Initiative Competitive Grants no. 2015-67015-22936 from the US Department of Agriculture's National Institute of Food and Agriculture. We gratefully acknowledge the very helpful comments by the two anonymous reviewers, and we thank Andra H. Nelson for assisting with data analysis.
520 $aABSTRACT. We investigated the importance of SNP weighting in populations with 2,000 to 25,000 genotyped animals. Populations were simulated with two effective sizes (20 or 100) and three numbers of QTL (10, 50 or 500). Pedigree information was available for six generations; phenotypes were recorded for the four middle generations. Animals from the last three generations were genotyped for 45,000 SNP. Single-step genomic BLUP (ssGBLUP) and weighted ssGBLUP (WssGBLUP) were used to estimate genomic EBV using a genomic relationship matrix (G). The WssGBLUP performed better in small genotyped populations; however, any advantage for WssGBLUP was reduced or eliminated when more animals were genotyped. WssGBLUP had greater resolution for genome-wide association (GWA) as did increasing the number of genotyped animals. For few QTL, accuracy was greater for WssGBLUP than ssGBLUP; however, for many QTL, accuracy was the same for both methods. The largest genotyped set was used to assess the dimensionality of genomic information (number of effective SNP). The number of effective SNP was considerably less in weighted G than in unweighted G. Once the number of independent SNP is well represented in the genotyped population, the impact of SNP weighting becomes less important. © 2017 Blackwell Verlag GmbH
653 $aACCURAY
653 $aBAYES B
653 $aSNP WEIGHTING
653 $aVARIABLE SELECTION
653 $aWEIGTED SSGBLUP
700 1 $aFRAGOMENI, B.O.
700 1 $aBRADFORD, H.L.
700 1 $aMENEZES I.R.
700 1 $aFERRAZ, J.B.S.
700 1 $aAGUILAR, I.
700 1 $aMISZTAL, I.
773 $tJournal of Animal Breeding and Genetics, 2017$gv. 134 (6), p. 463-471.
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INIA Las Brujas (LB) |
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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
28/01/2021 |
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Actualizado : |
12/08/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
AMÉRICO, L.F.; DUCHINI, P.G.; SCHMITT, D-; GUZATTI, G.C.; LATTANZI, F.; FISCHER SBRISSIA, A. |
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Afiliación : |
LUANA FIDELIS AMÉRICO,, Animal Production and Food Science Department, Santa Catarina State University (UDESC/CAV), Avenida Luiz de Camo˜es, 2090, 88520-000, Lages, SC, Brazil.; PAULO GONÇALVES DUCHINI, Animal Production and Food Science Department, Santa Catarina State University (UDESC/CAV), Avenida Luiz de Camo˜es, 2090, 88520-000, Lages, SC, Brazil; DANIEL SCHMITT, Animal Production and Food Science Department, Santa Catarina State University (UDESC/CAV), Avenida Luiz de Camo˜es, 2090, 88520-000, Lages, SC, Brazil; GABRIELA CRISTINA GUZATTI, Santa Catarina Federal Institute (IFSC), Rua 22 de Abril, 2440, 89900-000, Sa?o Miguel do Oeste, SC, Brazil.; FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDRÉ FISCHER SBRISSIA, Animal Production and Food Science Department, Santa Catarina State University (UDESC/CAV), Avenida Luiz de Camo˜es, 2090, 88520-000, Lages, SC, Brazil. |
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Título : |
Nitrogen nutritional status in perennial grasses under defoliation: Do stubble height and mixed cultivation matter?. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Journal of Plant Nutrition and Soil Science, Volume 184, Issue2, April 2021, Pages 208-216, April 2021. Doi: https://doi.org/10.1002/jpln.202000201 |
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DOI : |
10.1002/jpln.20200020 |
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Idioma : |
Inglés |
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Notas : |
Article history: Accepted December 19, 2020;First published: 14 January 2021. Correspondence: P. G. Duchini; e-mail address: duchini_p_g@hotmail.com |
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Contenido : |
Abstract:Background and aims: The concepts of critical nitrogen (N) concentration and nitrogen nutrition index (NNI) provide effective tools for assessing the N nutritional status of pastoral systems. However, no conclusive data exist concerning the effects of stubble height at harvest on the Ndilution curve [N concentration (N%) = a(biomass)?b] and mixed species cultivation on N nutritional status of forage plants with contrasting growth strategies. To evaluate these effects, three cool-season perennial grasses (exploitative, Arrhenatherum elatius L.; moderately exploitative,
Dactylis glomerata L.; conservative, Festuca arundinacea Scherb.) were grown under different cultivation methods either as pure stands or as a mixture and conducted two experiments. |
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Palabras claves : |
CRITICAL NITROGEN CONCENTRATION; ESTADO NUTRICIONAL DEL NITROGENO; FERTILIZATION; GRAMINEAS PERENNES DEFOLIADAS; GRASSLANDS; MIXWD SWARDS; NITROGEN NUTRITION INDEX. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 01910naa a2200289 a 4500
001 1061691
005 2021-08-12
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1002/jpln.20200020$2DOI
100 1 $aAMÉRICO, L.F.
245 $aNitrogen nutritional status in perennial grasses under defoliation$bDo stubble height and mixed cultivation matter?.$h[electronic resource]
260 $c2021
500 $aArticle history: Accepted December 19, 2020;First published: 14 January 2021. Correspondence: P. G. Duchini; e-mail address: duchini_p_g@hotmail.com
520 $aAbstract:Background and aims: The concepts of critical nitrogen (N) concentration and nitrogen nutrition index (NNI) provide effective tools for assessing the N nutritional status of pastoral systems. However, no conclusive data exist concerning the effects of stubble height at harvest on the Ndilution curve [N concentration (N%) = a(biomass)?b] and mixed species cultivation on N nutritional status of forage plants with contrasting growth strategies. To evaluate these effects, three cool-season perennial grasses (exploitative, Arrhenatherum elatius L.; moderately exploitative, Dactylis glomerata L.; conservative, Festuca arundinacea Scherb.) were grown under different cultivation methods either as pure stands or as a mixture and conducted two experiments.
653 $aCRITICAL NITROGEN CONCENTRATION
653 $aESTADO NUTRICIONAL DEL NITROGENO
653 $aFERTILIZATION
653 $aGRAMINEAS PERENNES DEFOLIADAS
653 $aGRASSLANDS
653 $aMIXWD SWARDS
653 $aNITROGEN NUTRITION INDEX
700 1 $aDUCHINI, P.G.
700 1 $aSCHMITT, D-
700 1 $aGUZATTI, G.C.
700 1 $aLATTANZI, F.
700 1 $aFISCHER SBRISSIA, A.
773 $tJournal of Plant Nutrition and Soil Science, Volume 184, Issue2, April 2021, Pages 208-216, April 2021. Doi: https://doi.org/10.1002/jpln.202000201
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