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| Registros recuperados: 789 | |
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| Hernández Zetina, Dulce Azucena. |
| El gusano rojo del maguey (Comadia redtenbacheri) es utilizado como alimento de varios estados de México. El largo ciclo de vida, la depredación humana y natural, la destrucción de su hábitat durante la colecta y el consecuente incremento en el costo para su consumo han reducido la población del insecto, por lo que se busca la implementación de un sistema de manejo del insecto. Se obtuvieron muestras de campo y comerciales de Comadia redtenbacheri para colectar a los parasitoides que afectan su desarrollo larval. Se encontraron como especies parasíticas al taquínido Acantholespesia texana (Aldrich & Webber) que se eporta como un nuevo registro para México y al himenóptero Lissonota fascipennis Townes, un nuevo registro para el hospedero y en el país.... |
| Tipo: Tesis |
Palavras-chave: Agave; Insecto comestible; Endoparasitoides; Pie de cria; Modelo de riego Agave; Edible insect; Endoparasitoids; Breeding; Risk model. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1051 |
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| Tian,Yinshuai; Zhang,Min; Hu,Xiaole; Wang,Linghui; Dai,Jiao; Xu,Ying; Chen,Fang. |
| Background: Jatropha curcas L. (further referred to as Jatropha), as a rapidly emerging biofuel crop, has attracted worldwide interest. However, Jatropha is still an undomesticated plant, the true potential of this shrub has not yet been fully realized. To explore the potential of Jatropha, breeding and domestication are needed. Seed size is one of the most important traits of seed yield and has been selected since the beginning of agriculture. Increasing the seed size is a main goal of Jatropha domestication for increasing the seed yield, but the genetic regulation of seed size in Jatropha has not been fully understood. Results: We cloned CYP78A98 gene from Jatropha,a homologue of CYP78A5 in Arabidopsis.Wefound that CYP78A98 was highly expressed in male... |
| Tipo: Journal article |
Palavras-chave: Biodiesel; Breeding; CYP78A5; Jatropha. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000100003 |
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| Santos,Paulo Eduardo Telles dos; Paludzyszyn Filho,Estefano; Silva,Lorenzo Teixeira de Melo da; Vandresen,Paula Burigo. |
| Abstract The aim of this study was to evaluate Eucalyptus badjensis concerning the genetic variation for growth traits and the potential of the species in supporting a breeding programme. The field trial was a provenance/progeny test established in Campina da Alegria, Santa Catarina, Brazil (latitude 26°52′05.1″ S, longitude 51°48′47.5″ W, altitude 1,015 m) in a soil classified as Latossolic Alumino-Ferric Brown Nitosol. The experiment comprised 60 open-pollinated progenies from the provenances Glenbog and Badja State Forest, New South Wales, Australia. Ten replicates and plots with six plants in row were used. At the age of 17 years, 279 trees were assessed for diameter of the bole at breast height (DBH), total tree height (H) and volume of wood with bark... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalypt; Progeny test; Genetic parameters; Breeding; Genetic gain. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000400457 |
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| Viana,José Marcelo Soriano. |
| Although epistasis is common in gene systems that determine quantitative traits, it is usually not possible to estimate the epistatic components of genotypic variance because experiments in breeding programs include only one type of progeny. As the study of this phenomenon is complex, there is a lack of theoretical knowledge on the contribution of the epistatic variances when predicting gains from selection and on the bias in estimating genetic parameters when fitting the additive-dominant model. The objective of this paper is to discuss these aspects. Regarding a non-inbred population, the genetic value due to dominance and the epistatic components of the genotypic value are not indicators of the number of favorable genes present in an individual. Thus,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Genetic parameters; Gene interaction; Selection. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000100012 |
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| Santos,Paulo Eduardo Telles dos; Geraldi,Isaias Olívio; Garcia,José Nivaldo. |
| In this study, the breeding perspectives of 41 open-pollinated progenies of Eucalyptus grandis were evaluated based on their wood traits. The progenies were distributed in two experiments in a randomized complete block design, with three replicates and linear plots containing six plants each. The traits were assessed at eight years of age. Two trees from each plot were selected for this assessment based on better growth, stem form and phytosanity. Significant differences in basic density, sapwood/heartwood ratio, bowing, specific gravity, parallel compression and static bending were detected among the progenies. These traits were potentially promising for breeding programs, with heritability coefficients that varied from 0.34 to 0.61 on a progeny mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Eucalypt; Genetic parameters; Wood quality. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000400017 |
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| Pacheco,Cleso Antônio Patto; Santos,Manoel Xavier dos; Cruz,Cosme Damião; Parentoni,Sidney Netto; Guimarães,Paulo Evaristo de Oliveira; Gama,Elto Eugênio Gomes e; Silva,Álvaro Eleutério da; Carvalho,Hélio Wilson Lemos de; Vieira Júnior,Pedro Abel. |
| The study of inbreeding depression is important for breeding strategies such as use of inbred progenies or extraction of inbreed lines. A diallel of 28 maize open-pollinated varieties was evaluated in 10 environments in the early 1990s. At the same time, S1 populations for each of the 28 varieties were evaluated in the same 10 experiments (environments). Yield reductions of the populations from S0 to S1 (mean of the 10 environments), varied from 34.6% (CMS-01) to 59.2% (CMS-30), with an average of 49.1%. Inbreeding depression was greater in populations with a wider genetic base, which had never been exposed to inbreeding (CMS-30, BR-107, PH4, Cunha, Saracura, Nitrodent, and Nitroflint). Inbred lines with greater yield means should be obtained from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inbreeding depression; Endogamy; Maize; Breeding; Diallel. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000400014 |
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| Ribeiro,Claudia SC; Souza,Karina RR; Carvalho,Sabrina IC; Reifschneider,Francisco JB. |
| ABSTRACT: The Habanero hot pepper group is not well known in Brazil, despite its origin in the Amazon. Nevertheless, domestic and international markets have been increasing the demand for this type of hot pepper. The Brazilian agroindustry is interested in supplying part of this demand with high quality products and competitive prices, and it needs well-adapted cultivars. To fill this gap, Embrapa Vegetables developed the Habanero pepper cultivar BRS Juruti, which meets the demands of both the market for fresh fruit and the processing agroindustry of mash and sauces. Cultivar BRS Juruti has red fruits and yielded around 50 t/ha (36,000 plants/ha). Fruit pungency is circa 260,000 SHU and fruits have high content of vitamin C (122 mg/100 g). BRS Juruti is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum chinense; Breeding; Resistance; Processing; Capsaicin.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400527 |
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| Carvalho Filho,José Luiz S de; Gomes,Luiz Antonio A; Biguzzi,Felipe A; Maluf,Wilson Roberto; Ferreira,Sindynara. |
| The objective of this study was to evaluate yield, commercial characteristics, tolerance to early bolting and resistance to the root-knot nematode Meloidogyne incognita race 1 in 25 F4 families of crispleaf lettuce, obtained out of crosses between cultivars Grand Rapids, Regina 71, and Verônica. In the first experiment, we evaluate leaf blade and borders characteristics, aboveground fresh weight, and number of days from sowing to the anthesis of first flower (tolerance to early bolting). In the second experiment, we evaluated the resistance to Meloidogyne incognita race 1 via gall index and number of galls and egg masses per root system. Five families had scores for leaf blade and borders similar to cultivars Verônica and Grand Rapids. Furthermore, 84% of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa L; Breeding; Root-knot nematode. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000300013 |
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| Crispim,Joelson Germano; Rêgo,Elizanilda R; Rêgo,Mailson M; Nascimento,Naysa Flávia F; Barroso,Priscila A. |
| ABSTRACT The objective of this study was to evaluate stigma receptivity and anther dehiscence in three floral development stages in F3 population of ornamental pepper (Capsicum annuum). A total of 162 plants (81 of purple corolla and 81 of white corolla) were used in this study. To analyze the stigma receptivity and anther dehiscence, three floral stages were analyzed: bud, pre-anthesis, and open flower. For each stage, 33 flowers of each phenotypic class were collected. The receptivity of the stigma was detected by dripping hydrogen peroxide solution (3%). For the evaluation of the level of receptivity, scores of 0 to 3 were assigned, varying according to the bubbles percentage found on the stigmatic surface. Scores of 1 to 5 were assigned for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Breeding; Floral biology; Pollination. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000400609 |
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| Graça,António JP; Amaral Júnior,Antonio T; Rodrigues,Rosana; Gonçalves,Leandro SA; Sudré,Cláudia P; Vivas,Marcelo; Melo,Paulo CT. |
| Brazil is the world eighth largest tomato producer and, within the country, the tomato production chain is segmented according to fruit destination: fresh consumption and processing (industrial supply). In contrast, Mozambique does not have a differentiated chain and cultivars are expected to serve both purposes. As there are no tomato breeding programs in Mozambique, cultivars used in the country come from other regions of the world, including Brazil. This paper describes the development and assessment of tomato hybrids with dual-purpose: fresh use and processing. Five tomato genotypes (B13LD, Castone, Massag-72, "Viradoro", and "Rio Grande") were crossed in complete diallel design without reciprocal, and the general and specific combining ability (GCA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicum; Breeding; Fruit quality; Agroindustry; Processing; International cooperation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000300339 |
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| Ribeiro,Wellington S; Costa,Lucas C; Dias,Fabíola S; Silva,Francisco CS; Pinto,Cleide MF; Finger,Fernando L. |
| Breeding programs seek to reduce the time spent assessing characteristics more times than necessary. However, this reduction should in no way undermine the representativeness and reliability of the information. Thus, an important success factor in breeding programs is the knowledge of the ideal number of assessments needed to evaluate commercially important characteristics in each species or population. In this context, this study aimed to determine the repeatability coefficient of eight biometric traits in four populations of ornamental pepper, seeking to increase the efficiency of evaluation and selection processes. There was no significant influence of the calculation method used over the estimate of the repeatability coefficient. The results indicated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum; Ornamental plants; Statistical analysis; Breeding; Germplasm. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000300352 |
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| Pimenta,Samy; Menezes,Dimas; Neder,Diogo G; Melo,Roberto A; Araujo,Ana LR; Maranhão,Elizabeth AA. |
| ABSTRACT Pepper is one of the main vegetable crops commercialized in Brazil and it is grown throughout the country. The objective of this study was to estimate genetic parameters and predict the genotypic values involved in agronomic traits of hybrid pepper in two different cropping systems in order to verify adaptability and genotypic stability. The experiment was carried out at the Experimental Station Luiz Jorge da Gama Wanderley from IPA, located in Vitoria de Santo Antão, Pernambuco State, Brazil, from October 2010 to March 2011. Seven hybrids were evaluated in two trials, the first in conventional farming system and the second in organic cultivation system. Randomized blocks were used with seven treatments, four replications and plots consisting of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Breeding; Genetic parameters; Mixed models.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000200168 |
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| Silva,Giovani Olegario da; Pereira,Arione da S; Carvalho,Agnaldo DF; Azevedo,Fernanda Q. |
| ABSTRACT The objective of this research was to evaluate advanced potato clones for tuber yield, frying quality, plant vigor, and maturity, grown from minituber seeds, and to assess correlations between these traits. Eight advanced potato clones of Embrapa Potato Breeding Program (F11-09-03, F05-11-03, F54-11-06, F141-11-01, C2718-12-09, C2718-24-09, C2743-09-09, and CL308) and three commercial cultivars (Agata, Asterix and BRSIPR Bel) were evaluated. Experiments were carried out in autumn 2017, in Canoinhas-SC and Pelotas-RS. A randomized complete block design with four replicates was used. We used tuber seeds type IV (minibubers). We evaluated plant vigor, maturity, yield and number of marketable tubers, yield and number of total tubers, average tuber... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Breeding; Selection. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000100095 |
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| Nascimento,Naysa Flávia F do; Rêgo,Elizanilda R do; Nascimento,Mayana F; Bruckner,Cláudio H; Finger,Fernando L; Rêgo,Mailson M do. |
| ABSTRACT The cultivation of potted peppers as ornamental plants has increased considerably throughout the planet. In Brazil, this crop is more recent and still lacks cultivars. In order to increase the available variability and obtain new cultivars, the interspecific hybridization is very useful in add a desirable attribute that occurs in one species to another species, resulting in a new cultivar of agronomic interest. The objective of this study was to characterize parents and interspecific hybrids based on 27 quantitative traits and evaluate their genetic diversity by multivariate procedures. Parents of seven pepper genotypes were crossed, and, seven hybrids were generated. The experiment was conducted in a completely randomized design. Data were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum spp.; Hybridization; Relative importance; Breeding; Characterization. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000300315 |
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| Eschemback,Vlandiney; Kawakami,Jackson; Melo,Paulo Eduardo de. |
| Abstract Little information on the comparative yield of the main potato cultivars (Solanum tuberosum subsp. tuberosum) used in Brazil is available. The objective of this study was to evaluate the performance of modern and old, European and Brazilian potato cultivars in different environments. Two experiments were carried in the field in 2013, in Brazil: in Guarapuava, in the state of Paraná, from January to April; and in Brasília, the Federal District, from August to November. Treatments consisted of six cultivars (origin, year of release): Bintje (European, 1910), Monalisa (European, 1982) and Agata (European, 1990); Baronesa (Brazilian, 1955), Catucha (Brazilian, 1995) and BRS Clara (Brazilian, 2010), arranged in complete blocks at random, with four... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Breeding; Variety; Yield potential.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000300377 |
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| Registros recuperados: 789 | |
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