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Puhl, L. E.; Crossa, J.; Munilla Leguizamón, S.; Pérez Rodríguez, P.; & Cantet, R. J. C. (2021)"Additive genetic variance and covariance between relatives in synthetic wheat crosses with variable parental ploidy levels". Genetics,217, (2, art.iyaa048),15p.

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Artículo
Título en inglés:
Additive genetic variance and covariance between relatives in synthetic wheat crosses with variable parental ploidy levels
Autor/es:
Puhl, Laura Elena; Crossa, José; Munilla Leguizamón, Sebastián; Pérez Rodríguez, Paulino; Cantet, Rodolfo Juan Carlos
Filiación:
Puhl, Laura Elena. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Buenos Aires, Argentina.
Crossa, José. Biometrics and Statistics Unit. International Maize and Wheat Improvement Center (CIMMYT).Texcoco, Edo. de México, México.
Crossa, José. Colegio de Postgraduados. Departamento de Estadística. Montecillo, Edo. de México, México.
Munilla Leguizamón, Sebastián. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal. Buenos Aires, Argentina.
Munilla Leguizamón, Sebastián. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Producción Animal (INPA). Buenos Aires, Argentina.
Munilla Leguizamón, Sebastián. CONICET - Universidad de Buenos Aires. Instituto de Investigaciones en Producción Animal (INPA). Buenos Aires, Argentina.
Pérez Rodríguez, Paulino. Colegio de Postgraduados. Departamento de Estadística. Montecillo, Edo. de México, México.
Cantet, Rodolfo Juan Carlos. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal. Buenos Aires, Argentina.
Cantet, Rodolfo Juan Carlos. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Producción Animal (INPA). Buenos Aires, Argentina.
Cantet, Rodolfo Juan Carlos. CONICET - Universidad de Buenos Aires. Instituto de Investigaciones en Producción Animal (INPA). Buenos Aires, Argentina.
Año:
2021
Título revista:
Genetics
ISSN:
1943-2631
Volumen:
217
Número:
2, art.iyaa048
Páginas:
15
Temas:
SYNTHETIC WHEAT; POLYPLOIDY; ADDITIVE GENETIC VARIANCE; BREEDING VALUES
Idioma:
Inglés
URL al Editor:

Resumen:

Cultivated bread wheat (Triticum aestivum L.) is an allohexaploid species resulting from the natural hybridization and chromosome doubling of allotetraploid durum wheat (T. turgidum) and a diploid goatgrass Aegilops tauschii Coss (Ae. tauschii). Synthetic hexaploid wheat (SHW) was developed through the interspecific hybridization of Ae. tauschii and T. turgidum, and then crossed to T. aestivum to produce synthetic hexaploid wheat derivatives (SHWDs). Owing to this founding variability, one may infer that the genetic variances of native wild populations vs improved wheat may vary due to their differential origin and evolutionary history. In this study, we partitioned the additive variance of SHW and SHWD with respect to their breed origin by fitting a hierarchical Bayesian model with heterogeneous covariance structure for breeding values to estimate variance components for each breed category, and segregation variance. Two data sets were used to test the proposed hierarchical Bayesian model, one from a multi-year multi-location field trial of SHWD and the other comprising the two species of SHW. For the SHWD, the Bayesian estimates of additive variances of grain yield from each breed category were similar for T. turgidum and Ae. tauschii, but smaller for T. aestivum. Segregation variances between Ae. tauschii—T. aestivum and T. turgidum— T. aestivum populations explained a sizable proportion of the phenotypic variance. Bayesian additive variance components and the Best Linear Unbiased Predictors (BLUPs) estimated by two well-known software programs were similar for multi-breed origin and for the sum of the breeding values by origin for both data sets. Our results support the suitability of models with heterogeneous additive genetic variances to predict breeding values in wheat crosses with variable ploidy levels.

Citación:

---------- APA ----------

Puhl, L. E.; Crossa, J.; Munilla Leguizamón, S.; Pérez Rodríguez, P.; & Cantet, R. J. C. (2021). Additive genetic variance and covariance between relatives in synthetic wheat crosses with variable parental ploidy levels. Genetics,217, (2, art.iyaa048),15p.
10.1093/genetics/iyaa048

---------- CHICAGO ----------

Puhl, Laura Elena, Crossa, José, Munilla Leguizamón, Sebastián, Pérez Rodríguez, Paulino, Cantet, Rodolfo Juan Carlos. 2021. "Additive genetic variance and covariance between relatives in synthetic wheat crosses with variable parental ploidy levels". Genetics 217, no.2, art.iyaa048:15.
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