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| Registros recuperados: 789 | |
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| Cardoso,Antonio Ismael Inácio; Costa,Cyro Paulino da. |
| It is possible to produce onions (Allium cepa) all over the year in Brazil, but most of the Brazilian cultivars have poor quality bulbs, a fact that favours onion imports from Argentina, a producer of Valenciana type cultivars that does not bulb in Brazil, but please Brazilian consumers. To study the effect of selection for bulb maturity, seventeen half sib progenies selected for early maturity and twenty five for late maturity, from the intervarietal triple cross [Crioula x (Pira Ouro x Valenciana Sintetica 14)] were grown, along with the triple cross itself and the cultivars Pira Ouro (short-day), Crioula (intermediate-day) and Armada (long-day). A total of forty six treatments were tested in a randomized block design with three replications of 32 plants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Cycle; Bulbification; Breeding. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100009 |
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| Issakowicz,Juliano; Issakowicz,Ana Claudia Koki Sampaio; Bueno,Mauro Sartori; Costa,Ricardo Lopes Dias da; Geraldo,Andre Torres; Abdalla,Adibe Luiz; McManus,Concepta; Louvandini,Helder. |
| ABSTRACT: The use of lambs from crossing of local with specialized sheep breeds for meat production may lead to higher meat deposition and a smaller fat amount in the carcass, with a more adequate nutritional profile for human consumption. This study investigated the performance, carcass and meat characteristics of lambs from the Morada Nova and Santa Inês locally adapted hair breeds and crosses between Dorper × Morada Nova and Dorper × Santa Inês slaughtered at approximately 35 kg. Morada Nova lambs showed lower (p < 0.05) performance compared to the other genetic groups resulting in a higher age at slaughter (p < 0.05). Crossbred Dorper × Santa Inês and Dorper × Morada Nova lambs showed better characteristics for meat production with better (p <... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Locally adapted Brazilian breeds; Breeding; Fatty acid profile; Quality meat; Terminal sire breeds. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000400288 |
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| Martins,Carlos Alberto Osório; Sediyama,Carlos Sigueyuki; Oliveira,Maria Goreti de Almeida; Reis,Múcio Silva; Rocha,Valterley Soares; Moreira,Maurílio Alves; Gomes,José Luiz Lopes. |
| The soybean [Glycine max (L.) Merrill] crop holds a prominent position in the Brazilian economy because of the extension of the planted area and volume of grain production, but the beany flavor has been a limiting factor for soybean derivatives consumption by western population. This flavor is produced mainly by action of lipoxygenase enzymes (Lox1, Lox2 and Lox3), present in some commercial varieties. The genetic elimination of the alleles that codify these enzymes is the most appropriate way to avoid problems associated to this deleterious flavor. To elucidate the effect of seed lipoxygenase elimination on the resistance to plant pathogens, normal varieties of soybean (FT-Cristalina RCH, Doko RC and IAC-12) and their backcross-derived lines, both with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Breeding; Genetics. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000400013 |
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| Ferreira,Ester Alice; Pasqual,Moacir; Tulmann Neto,Augusto. |
| Fig breeding programs through conventional methods are rare in many countries, e.g. Brazil, since the wasp Blastophaga psenes, which is responsible for the natural pollination, is not present. For these cases a low cost alternative for the breeding program is the induction of physical mutagenesis by radiation. The sensivity of fig explant buds of different sizes to gamma radiation were evaluated. Fig plantlets "Roxo de Valinhos" already established in vitro were classified by size in 2.5 to 4.5 cm, 5 to 9 7 cm and 8 to 10 cm long, and irradiated with: 10, 20, 30, 40 and 50 Gy doses. After irradiation each plantlet was cut in pieces containing one-bud and transferred to WPM culture medium, according to the bud position: medium and apical. Explants were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mutation; Breeding; Tissue culture. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000400017 |
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| Bottignon,Marcos Ribeiro; Rufino,Elcio Rodrigo; Marques,Márcia Ortiz Mayo; Colombo,Carlos Augusto; Azevedo Filho,Joaquim Adelino de; Lourenção,André Luiz; Martins,Antônio Lúcio Mello; Siqueira,Walter José. |
| Lippia alba (Mill.) N.E.Br. is an aromatic and medicinal shrub native to the American continent. Despite its potential as a source of essential oil for the pharmaceutical and cosmetics industries, few selection and genetic improvement studies have been carried out. The aim of this study was to provide genetic information on this species for breeding programs, showing its selection potential, by investigating clonal half-sib progenies. The following characteristics were evaluated per plant: leaf dry mass (LDM), total dry mass (TDM), leaf yield (LY), essential oil yield (EOY) and oil production (OP). Estimates were made for the several genetic parameters including absolute genetic gain at 30% selection intensity, correlations and relative contribution of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic gain; Breeding; Essential oils. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000400009 |
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| Carmo,Cátia Dias do; Silva,Maiane Suzarte da; Oliveira,Gilmara Alvarenga Fachardo; Oliveira,Eder Jorge de. |
| The geminivirus complex known as cassava mosaic disease (CMD) is one of the most devastating viruses for cassava (Manihot esculenta Crantz). The aim of this study was to use molecular-assisted selection (MAS) to identify CMD-resistant accessions and ascertain promising crosses with elite Brazilian varieties. One thousand two hundred twenty-four accessions were genotyped using five molecular markers (NS169, NS158, SSRY028, SSRY040 and RME1) that were associated with resistance to CMD, along with 402 SNPs (single-nucleotide polymorphism). The promising crosses were identified using a discriminant analysis of main component (DAPC), and the matrix of genomic relationship was estimated with SNP markers. The CMD1 gene, previously described in M. glaziovii, was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manihot esculenta; Breeding; Disease; Virus. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000600520 |
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| Ambrósio,Moisés; Viana,Alexandre Pio; Ribeiro,Rodrigo Moreira; Preisigke,Sandra Costa; Cavalcante,Natan Ramos; Silva,Flavia Alves da; Torres,Géssica Xavier; Sousa,Carlos Misael Bezerra de. |
| ABSTRACT: The purpose of this study was to conduct selection, genetic parameter estimation, and prediction of genetic values for 18 S1 families of guava trees using mixed model methodology and simultaneous selection of traits by means of the additive selection index, multiplicative selection index, and mean rank adapted from Mulamba. All families analyzed were obtained by means of self-fertilization of superior genotypes (full siblings) from the genetic breeding program of guava trees at the Universidade Estadual do Norte Fluminense. An experimental randomized block design with 18 S1 families, three replicates, and ten plants per plot was used. A total of 540 genotypes (individual plants) of guava tree were evaluated. Genetic parameter estimation and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inbreeding; Guava tree; Mixed models; Breeding. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000201101 |
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| Registros recuperados: 789 | |
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