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| Vandeputte, Marc; Kocour, M; Mauger, S; Rodina, M; Launay, A; Gela, D; Dupont Nivet, M; Hulak, M; Linhart, O. |
| We estimated the heritability of growth-related traits (weight and length at ages one summer, first spring and two summers) in a synthetic mirror carp strain (HSM) in the Czech Republic. The four generation pedigree was obtained from parentage assignment of three factorial mating designs with microsatellite markers, and included 195 fish without phenotypes (48 G0, 147 G1) and 1321 fish with phenotypes (674 G2, 647 G3). Animal model heritability estimates over generations were in the range 0.21-0.33 for length and in the range 0.31-0.44 for weight. The genetic correlation between length and weight was high (0.97). The correlations between growth measurements in the first and in the second summer of age were moderate to low (0.34-0.67). Divergent selection... |
| Tipo: Text |
Palavras-chave: Quantitative genetics; Performance; Microsatellites; Parentage assignment; Realized heritability; Selection response; Selection; Growth; Heritability; Cyprinus carpio; Common carp. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4076.pdf |
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| Degremont, Lionel; Nourry, Max; Maurouard, Elise. |
| The ostreid herpesvirus 1 (OsHV-1) is one of the major pathogens affecting the Pacific oyster Crassostrea gigas, and numerous mortality outbreaks have been observed worldwide. We report the first results of our experimental breeding program using mass selection focused on survival and resistance to OsHV-1 after four generations of selection for two lines. These lines originated from two stocks of adult wild oysters sampled from the Marennes-Oléron Bay in 2008. Each line was spawned in February 2009 to produce the base populations. Both lines were then either protected from OsHV-1 or tested in the field in 2009 where they were exposed to OsHV-1. For each line during 2010 to 2013, one generation per year was produced using either the survivors of the... |
| Tipo: Text |
Palavras-chave: Survival; Crassostrea gigas; Realized heritability; Selection response; OsHV-1; Disease resistance. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00266/37751/36064.pdf |
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| Martin,Eugenia; Cravero,Vanina; Liberatti,David; Espósito,Andrea; López Anido,Fernando; Cointry,Enrique. |
| There have been few reports on genetic parameters or artificial selection for growth traits in globe artichoke (Cynara cardunculus var. scolymus), the study of the effect of one cycle of mass selection and realized heritability estimates would be valuable for planning breeding strategies in this species. A C0 segregating population was formed from the cross of two contrasting seed-grown cultivars, Imperial Star and Estrella del Sur FCA. Selected plants for productive traits were intercrossed to produce a C1 population. The C1 population along with the C0 population, both parents and the F1 were evaluated obtaining the response to selection and estimating realized heritability. Mass selection for increased yield and precocity was particularly successful,... |
| Tipo: Journal article |
Palavras-chave: Additive actions; Breeding program; Realized heritability. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200002 |
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| Vandeputte, Marc; Dupont Nivet, M; Haffray, P; Chavanne, H; Cenadelli, S; Parati, K; Vidal, Marie-odile; Vergnet, Alain; Chatain, Beatrice. |
| Selective breeding of European sea bass (Dicentrarchus labrax) receives a growing interest, as the estimated heritability of growth is medium to high. In this study, we compared the offspring of four groups of sea bass sires, mated with the same wild dams: wild (W), first generation of domestication (D), first generation of mass selection for length (M), first generation of PROSPER-like selection for length (P). The comparison was done both in replicated tanks (separate rearing) and in mixed tanks (mixed rearing) where sire origins were recovered by genotyping of eight microsatellite markers. Weight, length and growth rate were measured from day 238 post-fertilization (69 g mean weight) to day 611 post-fertilization (390 g mean weight). Both in mixed and... |
| Tipo: Text |
Palavras-chave: Nephrocalcinosis; Competition; Microsatellites; Parentage assignment; Realized heritability; Selection response; Growth; Selective breeding; Dicentrarchus labrax; European sea bass. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-5303.pdf |
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| Teixeira, Davi Henrique Lima; Gonçalves, Flávia Maria Avelar; Nunes, José Airton Rodrigues; Souza Sobrinho, Fausto; Benites, Flávio Rodrigo Gandolfi; Dias, Kaio Olímpio das Graças. |
| The breeding program of Urochloa ruziziensis evaluates many genotypes in initial phases. Evaluations through grades might make the selection less costly. The aim of this study was to verify the efficiency of visual selection for green biomass yield in relation to different selection strategies, such as mass selection by phenotypic mean, BLUP (Best Linear Unbiased Prediction) and at random. For this purpose, 2,309 regular genotypes were evaluated in an augmented block design in two cuts. The evaluators gave grades for plant vigor, and later, the plots were measured for green biomass yield. The coincidences of the selected genotypes were estimated by different selection strategies. Then, 254 clones of the genotypes selected in different strategies were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mass selection; Realized heritability; BLUP; Brachiaria.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42444 |
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