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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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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
16/03/2020 |
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Actualizado : |
10/08/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
AGUILAR, I.; FERNÁNDEZ, E.N.; BLASCO, A.; RAVAGNOLO, O.; LEGARRA, A. |
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Afiliación : |
IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EDUARDO N. FERNÁNDEZ, Cátedra de Mejora y Conservación de Recursos Genéticos e Instituto de Investigación sobre Producción Agropecuaria, Ambiente y Salud, Facultad de Ciencias Agrarias, UNLZ, Buenos Aires, Argentina; AGUSTÍN BLASCO, Institute for Animal Science and Technology, Universitat Politècnica de València, València, Spain; OLGA RAVAGNOLO GUMILA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDRÉS LEGARRA, UMR GenPhySE, INRA Toulouse, Castanet Tolosan, France. |
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Título : |
Effects of ignoring inbreeding in model-based accuracy for BLUP and SSGBLUP. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Journal of Animal Breeding and Genetics, 1 July 2020, Volume 137, Issue 4, pp. 356-364. Doi: https://doi.org/10.1111/jbg.12470 |
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ISSN : |
0931-2668 |
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DOI : |
10.1111/jbg.12470 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 22 August 2019 / Revised: 10 December 2019 / Accepted: 11 January 2020 / First published:20 February 2020
Corresponding author: Aguilar, I.; email:iaguilar@inia.org.uy
Funding information: FEDER; INRA; Universidad Nacional de Lomas de Zamora; European Unions' Horizon 2020 Research & Innovation Programme, Grant/Award Number: N°772787 |
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Contenido : |
ABSTRACT.
Model-based accuracy, defined as the theoretical correlation between true and estimated breeding value, can be obtained for each individual as a function of its prediction error variance (PEV) and inbreeding coefficient F, in BLUP, GBLUP and SSGBLUP genetic evaluations. However, for computational convenience, inbreeding is often ignored in two places. First, in the computation of reliability = 1-PEV/(1 + F). Second, in the set-up, using Henderson's rules, of the inverse of the pedigree-based relationship matrix A. Both approximations have an effect in the computation of model-based accuracy and result in wrong values. In this work, first we present a reminder of the theory and extend it to SSGBLUP. Second, we quantify the error of ignoring inbreeding with real data in three scenarios: BLUP evaluation and SSGBLUP in Uruguayan dairy cattle, and BLUP evaluations in a line of rabbit closed for >40 generations with steady increase of inbreeding up to an average of 0.30. We show that ignoring inbreeding in the set-up of the A-inverse is equivalent to assume that non-inbred animals are actually inbred. This results in an increase of apparent PEV that is negligible for dairy cattle but considerable for rabbit. Ignoring inbreeding in reliability = 1-PEV/(1 + F) leads to underestimation of reliability for BLUP evaluations, and this underestimation is very large for rabbit. For SSGBLUP in dairy cattle, it leads to both underestimation and overestimation of reliability, both for genotyped and non-genotyped animals. We strongly recommend to include inbreeding both in the set-up of A-inverse and in the computation of reliability from PEVs.
© 2020 Blackwell Verlag GmbH MenosABSTRACT.
Model-based accuracy, defined as the theoretical correlation between true and estimated breeding value, can be obtained for each individual as a function of its prediction error variance (PEV) and inbreeding coefficient F, in BLUP, GBLUP and SSGBLUP genetic evaluations. However, for computational convenience, inbreeding is often ignored in two places. First, in the computation of reliability = 1-PEV/(1 + F). Second, in the set-up, using Henderson's rules, of the inverse of the pedigree-based relationship matrix A. Both approximations have an effect in the computation of model-based accuracy and result in wrong values. In this work, first we present a reminder of the theory and extend it to SSGBLUP. Second, we quantify the error of ignoring inbreeding with real data in three scenarios: BLUP evaluation and SSGBLUP in Uruguayan dairy cattle, and BLUP evaluations in a line of rabbit closed for >40 generations with steady increase of inbreeding up to an average of 0.30. We show that ignoring inbreeding in the set-up of the A-inverse is equivalent to assume that non-inbred animals are actually inbred. This results in an increase of apparent PEV that is negligible for dairy cattle but considerable for rabbit. Ignoring inbreeding in reliability = 1-PEV/(1 + F) leads to underestimation of reliability for BLUP evaluations, and this underestimation is very large for rabbit. For SSGBLUP in dairy cattle, it leads to both underestimation and overestimation of reliability, both f... Presentar Todo |
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Palabras claves : |
BREEDING; Genomic predictions; GENOMICS. |
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Asunto categoría : |
L10 Genética y mejoramiento animal |
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Marc : |
LEADER 02789naa a2200241 a 4500
001 1060921
005 2020-08-10
008 2020 bl uuuu u00u1 u #d
022 $a0931-2668
024 7 $a10.1111/jbg.12470$2DOI
100 1 $aAGUILAR, I.
245 $aEffects of ignoring inbreeding in model-based accuracy for BLUP and SSGBLUP.$h[electronic resource]
260 $c2020
500 $aArticle history: Received: 22 August 2019 / Revised: 10 December 2019 / Accepted: 11 January 2020 / First published:20 February 2020 Corresponding author: Aguilar, I.; email:iaguilar@inia.org.uy Funding information: FEDER; INRA; Universidad Nacional de Lomas de Zamora; European Unions' Horizon 2020 Research & Innovation Programme, Grant/Award Number: N°772787
520 $aABSTRACT. Model-based accuracy, defined as the theoretical correlation between true and estimated breeding value, can be obtained for each individual as a function of its prediction error variance (PEV) and inbreeding coefficient F, in BLUP, GBLUP and SSGBLUP genetic evaluations. However, for computational convenience, inbreeding is often ignored in two places. First, in the computation of reliability = 1-PEV/(1 + F). Second, in the set-up, using Henderson's rules, of the inverse of the pedigree-based relationship matrix A. Both approximations have an effect in the computation of model-based accuracy and result in wrong values. In this work, first we present a reminder of the theory and extend it to SSGBLUP. Second, we quantify the error of ignoring inbreeding with real data in three scenarios: BLUP evaluation and SSGBLUP in Uruguayan dairy cattle, and BLUP evaluations in a line of rabbit closed for >40 generations with steady increase of inbreeding up to an average of 0.30. We show that ignoring inbreeding in the set-up of the A-inverse is equivalent to assume that non-inbred animals are actually inbred. This results in an increase of apparent PEV that is negligible for dairy cattle but considerable for rabbit. Ignoring inbreeding in reliability = 1-PEV/(1 + F) leads to underestimation of reliability for BLUP evaluations, and this underestimation is very large for rabbit. For SSGBLUP in dairy cattle, it leads to both underestimation and overestimation of reliability, both for genotyped and non-genotyped animals. We strongly recommend to include inbreeding both in the set-up of A-inverse and in the computation of reliability from PEVs. © 2020 Blackwell Verlag GmbH
653 $aBREEDING
653 $aGenomic predictions
653 $aGENOMICS
700 1 $aFERNÁNDEZ, E.N.
700 1 $aBLASCO, A.
700 1 $aRAVAGNOLO, O.
700 1 $aLEGARRA, A.
773 $tJournal of Animal Breeding and Genetics, 1 July 2020, Volume 137, Issue 4, pp. 356-364. Doi: https://doi.org/10.1111/jbg.12470
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
30/01/2020 |
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Actualizado : |
30/01/2020 |
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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 : |
CUTI, L.; MURARO, D.S.; SILVA, V.A.; KASPARY, T. E.; BASSO, C.J.; ROGGIA, S. |
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Afiliación : |
L. CUTI, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; D. S. MURARO, Universidade de São Paulo, Piracicaba, SP, Brazil; V. A. SILVA, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; TIAGO EDU KASPARY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; C. J. BASSO, Universidade Federal de Santa Maria, Frederico Westphalen, RS, Brazil; S. ROGGIA, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Soja, Londrina, PR, Brazil. |
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Título : |
Leaf consumption and preference to conyza sp., conventional and bt soybean by helicoverpa armigera. [Consumo foliar e preferência alimentar de conyza sp., soja convencional e bt por helicoverpa armigera.] |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Planta Daninha, 2019, Volume 37, Article number e019211566. OPEN ACCESS. Doi: http://dx.doi.org/10.1590/s0100-83582019370100123 |
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ISSN : |
0100-8358 |
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DOI : |
10.1590/s0100-83582019370100123 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: August 13, 2018 / Accepted: February 27, 2019. |
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Contenido : |
ABSTRACT.
Helicoverpa armigera caterpillars are polyphagous and exhibit high migratory potential. Given the traits of this pest, alternative hosts located in or near the crop stand may support the survival and permanence of H. armigera in the field. The aim of this study was to investigate Conyza sp. as a food source for H. armigera caterpillars in scenarios with conventional and Bt soybean. Two experiments were conducted in biochemical oxygen demand incubators. The first assessed consumption of conventional soybean, Bt soybean and Conyza sp. leaves by 3rd and 5th instar caterpillars, with no choice given (no-choice test). The second test evaluated the food preference of 3rd instar H. armigera larvae, with two choices given (dual-choice test). Fifth instar larvae favored Conyza sp. leaves to Bt soybean, but preferred conventional soybean to both of these options. The survival of 3rd instar caterpillars did not differ statistically regardless of the plant species used as a food source. Fifth instar larvae fed Bt soybean exhibited lower survival rates when compared to Conyza sp. and conventional soybean. In dual-choice test arenas, soybean leaf consumption was superior to Conyza sp. Conventional soybean consumption was also greater when offered in conjunction with Bt soybean. Caterpillars offered Conyza sp. and Bt soybean leaves only consumed the weed species. Conyza sp. plants can serve as a food source for H. armigera larvae, which showed a preference for Conyza sp. leaves to Bt soybean. © 2019, Sociedade Brasileira da Ciencia das Plantas Daninha. All rights reserved. MenosABSTRACT.
Helicoverpa armigera caterpillars are polyphagous and exhibit high migratory potential. Given the traits of this pest, alternative hosts located in or near the crop stand may support the survival and permanence of H. armigera in the field. The aim of this study was to investigate Conyza sp. as a food source for H. armigera caterpillars in scenarios with conventional and Bt soybean. Two experiments were conducted in biochemical oxygen demand incubators. The first assessed consumption of conventional soybean, Bt soybean and Conyza sp. leaves by 3rd and 5th instar caterpillars, with no choice given (no-choice test). The second test evaluated the food preference of 3rd instar H. armigera larvae, with two choices given (dual-choice test). Fifth instar larvae favored Conyza sp. leaves to Bt soybean, but preferred conventional soybean to both of these options. The survival of 3rd instar caterpillars did not differ statistically regardless of the plant species used as a food source. Fifth instar larvae fed Bt soybean exhibited lower survival rates when compared to Conyza sp. and conventional soybean. In dual-choice test arenas, soybean leaf consumption was superior to Conyza sp. Conventional soybean consumption was also greater when offered in conjunction with Bt soybean. Caterpillars offered Conyza sp. and Bt soybean leaves only consumed the weed species. Conyza sp. plants can serve as a food source for H. armigera larvae, which showed a preference for Conyza sp. leaves t... Presentar Todo |
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Palabras claves : |
Alternative host; Hospedeiro alternativo; Planta daninha; Weed. |
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Thesagro : |
GLYCINE MAX. |
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Asunto categoría : |
A50 Investigación agraria |
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URL : |
http://www.scielo.br/pdf/pd/v37/0100-8358-PD-37-e019211566.pdf
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Marc : |
LEADER 02633naa a2200277 a 4500
001 1060726
005 2020-01-30
008 2019 bl uuuu u00u1 u #d
022 $a0100-8358
024 7 $a10.1590/s0100-83582019370100123$2DOI
100 1 $aCUTI, L.
245 $aLeaf consumption and preference to conyza sp., conventional and bt soybean by helicoverpa armigera. [Consumo foliar e preferência alimentar de conyza sp., soja convencional e bt por helicoverpa armigera.]$h[electronic resource]
260 $c2019
500 $aArticle history: Received: August 13, 2018 / Accepted: February 27, 2019.
520 $aABSTRACT. Helicoverpa armigera caterpillars are polyphagous and exhibit high migratory potential. Given the traits of this pest, alternative hosts located in or near the crop stand may support the survival and permanence of H. armigera in the field. The aim of this study was to investigate Conyza sp. as a food source for H. armigera caterpillars in scenarios with conventional and Bt soybean. Two experiments were conducted in biochemical oxygen demand incubators. The first assessed consumption of conventional soybean, Bt soybean and Conyza sp. leaves by 3rd and 5th instar caterpillars, with no choice given (no-choice test). The second test evaluated the food preference of 3rd instar H. armigera larvae, with two choices given (dual-choice test). Fifth instar larvae favored Conyza sp. leaves to Bt soybean, but preferred conventional soybean to both of these options. The survival of 3rd instar caterpillars did not differ statistically regardless of the plant species used as a food source. Fifth instar larvae fed Bt soybean exhibited lower survival rates when compared to Conyza sp. and conventional soybean. In dual-choice test arenas, soybean leaf consumption was superior to Conyza sp. Conventional soybean consumption was also greater when offered in conjunction with Bt soybean. Caterpillars offered Conyza sp. and Bt soybean leaves only consumed the weed species. Conyza sp. plants can serve as a food source for H. armigera larvae, which showed a preference for Conyza sp. leaves to Bt soybean. © 2019, Sociedade Brasileira da Ciencia das Plantas Daninha. All rights reserved.
650 $aGLYCINE MAX
653 $aAlternative host
653 $aHospedeiro alternativo
653 $aPlanta daninha
653 $aWeed
700 1 $aMURARO, D.S.
700 1 $aSILVA, V.A.
700 1 $aKASPARY, T. E.
700 1 $aBASSO, C.J.
700 1 $aROGGIA, S.
773 $tPlanta Daninha, 2019, Volume 37, Article number e019211566. OPEN ACCESS. Doi: http://dx.doi.org/10.1590/s0100-83582019370100123
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