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| Registros recuperados: 80 | |
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| Santos,Laurenice Araujo dos; Silva,Simone Alves; Souza,Deoclides Ricardo de; Araujo,Gilmara de Melo; Almeida,Vanessa de Oliveira; Neves,Cláudia Garcia. |
| ABSTRACT: Knowledge on the variability and heritability of agronomic characters of interest aid the selection of superior materials. Thus, the objective of this study was to evaluate the genetic parameters of agronomic traits in castor bean plant lineages and to quantify the genetic correlations between them. The study was performed in the experimental area of the Federal University of the Recôncavo da Bahia, Cruz das Almas, Bahia. Seed oil content, vegetative cycle, plant height, and the number and weight of seeds per plant were evaluated in 47 lineages of castor bean seedlings. The coefficient of genetic variation was higher for weight of seeds per plant, revealing greater variability. The broad-sense heritability of individual plots presented a higher... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Castor bean plant; Genetic correlation; Heritability; Genetic improvement. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100400 |
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| Matus,Iván; Mellado,Mario; Pinares,Marcos; Madariaga,Ricardo; del Pozo,Alejandro. |
| Wheat (Triticum aestivum L.) is the major crop in terms of planted area and presents the largest distribution in the country covering a wide range of climatic regions. This study assesses the changes of various agronomic traits of winter wheat cultivars released in Chile between 1920 and 2000. A total of 117 winter accessions, representing 45 old and 72 modern cultivars were tested in a humid Mediterranean-type climate, with irrigation, in 2003. Old cultivars were those released before 1960 and modern ones were those released after 1960. Principal component (PC) analysis using 10 agronomic traits clearly separate modern from old cultivars of winter wheat. Comparing modern cultivars with old ones, plant height have been reduced by 25.6%, but others traits... |
| Tipo: Journal article |
Palavras-chave: Genetic improvement; Grain quality; Mediterranean environment; Old and new cultivars; Principal components; Yield progress. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300001 |
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| Penso,Gener Augusto; Citadin,Idemir; Scariotto,Silvia; Danner,Moeses Andrigo; Sachet,Marcos Robson. |
| Abstract Studies on the interaction of genetic and environmental effects on floral morphogenesis in peach trees grown in humid subtropical climate provide important information related to adaptation and for assisting in the selection of new cultivars. This study aimed to verify the genetic and environmental effects and to identify peach tree genotypes with greater shoot length, vegetative bud, flower bud density adaptability and stability under humid subtropical climate conditions. Twelve peach tree genotypes were evaluated over a period of eight years, during the growing season (2006/07 to 2013/14) in Pato Branco-PR, Brazil. Data were collected for shoot length (SL), flower bud density (FBD) and vegetative bud density (VBD), as well as temperature,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prunus persica L. Batsch; GGE Biplot; Genetic improvement; Adaptability and stability; Morphogenesis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000500801 |
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| Silva,Manassés dos Santos; Rodrigues,Taise Conceição; Aud,Fabiana Ferraz; Santos-Serejo,Janay Almeida dos; Amorim,Edson Perito. |
| Abstract Considering there is no illustrated scale of the principle anomalies observed for banana seeds, the objective of this guide is to cover in detail, for the first time, the categories to classify the most common types of anomalies observed in banana embryos and seeds, as well as in vitro embryo rescue and culture, taking into account the experience acquired by the banana breeding program at Embrapa in Brazil. Four classes to classify the seeds were proposed and with regards to classifying the embryos, eight classes were established. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: In vitro culture; Germination; Genetic improvement; Musa spp; Embryo rescue. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000210001 |
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| LOBO, R. N. B.. |
| The decision-making process is complex and often demands time and difficulties for managers, project coordinators and, especially here, specialists in genetic improvement programs. Tools that can help this process are always welcome and are added to other alternatives for a correct and efficient decision. Despite the possibility of being used in several areas of knowledge, the MultiAtr software was specially developed for the definition of weights for the selection objectives of animal breeding programs. Its use in interviews with specialists, breeders and scholars can contribute to the direction of these programs by the scientists involved in this decision. Based on this, it is recommended, for the scientific community and other decision-making actors,... |
| Tipo: Folhetos |
Palavras-chave: Breeding programs; Decision support systems; Animal breeding; Genetic improvement; Computer software. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137605 |
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| López Colomba,E; Prina,A; Griffa,S; Ribotta,AN; Carloni,E; Tommasino,E; Luna,C; Biderbost,E; Grunberg,K. |
| Cenchrus ciliaris L., a forage grass of wide distribution in the north-west of Argentina, is a tetraploid (4x = 36) and obligate apomictic species. One way of obtaining novel germplasm is by induced mutations. In this work, physical and chemical mutations are combined with in vitro selection procedures seeking for new germplasm, with emphasis on salinity and drought tolerance. Mature seeds of Cenchrus ciliaris L. cv Biloela were subjected to treatments with X rays (400 Gy) and ethyl methanesulphonate (EMS) water solution (5.5 mM for 24 h). To perform in vitro selection, after 7 days of EMS or X rays treatments, germinated seeds were transferred to tubes containing Murashige and Skoog medium supplemented with NaCl or mannitol to simulate salinity and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cenchrus ciliaris; Genetic improvement; Induced mutations; In vitro selection; RAPDs analysis. |
| Ano: 2011 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572011000100009 |
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| Rosa,PS; Faria Filho,DE; Dahlke,F; Vieira,BS; Macari,M; Furlan,RL. |
| In order to evaluate the effects of broiler genotype and of heat exposure on performance, carcass characteristics, and protein and fat accretion, six hundred one-day-old male broilers were randomly assigned in a 2 x 3 factorial arrangement, according to the following factors: genetic group (selected and non-selected broilers) and pair-feeding scheme (Ad32 - reared under heat stress and fed ad libitum; Ad23 - reared at thermoneutrality and fed ad libitum; Pf23 - reared at thermoneutrality and pair fed with Ad32), with a total of six treatments with four replicates of 25 birds each. Independent of pair-feeding scheme, selected broilers showed better feed conversion, higher carcass yield, and lower abdominal fat deposition rate. However, as compared to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allometric coefficient; Carcass yield; Genetic improvement; Heat stress. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300007 |
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| FACO, O.; LOBO, R. N. B.; FONSECA, J. F. da; LOBO, A. M. B. O.; VERNEQUE, R. da S.; PIMENTEL, C. M. M.; PAIVA, S. R.. |
| Neste documento estão apresentados os métodos e os resultados da avaliação genética para produção de leite até 305 dias de lactação de animais (machos e fêmeas) da raça Saanen. Espera-se que a publicação deste primeiro sumário de avaliação genética do Programa de Melhoramento Genético de Caprinos Leiteiros, fruto do esforço e comprometimento de vários parceiros, mas principalmente dos criadores, converta-se num marco para a caprinocultura leiteira nacional e também sirva de convite para novas adesões a esta iniciativa. |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Raça Saanen; Sumário; Programa Capragene; Ganho genético; Dairy goat; Genética animal; Melhoramento genético animal; Cabra leiteira; Leite; Teste de progênie; Goats; Genetic improvement; Animal genetics; Breeding; Progeny testing. |
| Ano: 2014 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1000132 |
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| Arnhold, Emmanuel; Universidade Federal do Goiás (UFG); Milani, Klayton Flávio; Universidade Estatual de Maringá (UEM). |
| The coefficient of variation (CV) has been the most important statistic to determine the precision of experimental errors, but an even classification for guiding popcorn breeders is still lacking for popping expansion. The normality of data from 50 CVs was tested through the Shapiro-Wilk test, and the mean (m), median, standard deviation (SD), maximum and minimum values, asymmetry and kurtosis were all determined using the momentum method. The CVs were ranked as low [CV ≤ (m - 1 SD)], moderate [(m - 1 SD) < CV ≤ (m + 1 SD)], high [(m + 1 SD) < CV ≤ (m + 2 SD)] and very high [CV > (m + 2 SD)]. In summary, these data were close to the normality because the slight and flattened curve was skewed to the right. The CV’s mean was... |
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Palavras-chave: Zea mays; Dispersion measurement; Genetic improvement; Precision; Accuracy Zea mays; Dispersion measurement; Genetic improvement; Precision; Accuracy. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/11911 |
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| Registros recuperados: 80 | |
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