|
|
|
| Registros recuperados: 293 | |
|
| |
|
| |
|
|
| Paredes C,Mario; Becerra V,Viviana; González A,María I. |
| Garlic (Allium sativum L.) is a species of vegetative propagation, showing high morphological diversity. Besides, its clones have specific adaptations to different agroclimatic regions. The objective of this study was to determine the genetic diversity of 65 garlic clones collected in Chile and introduced from different countries, by using RAPD (Random Amplified Polymorphic DNA). Fourty random primers of 10 mers generated a total of 398 bands with an 87% of polymorphism. Each primer amplified between two and 20 bands. The size of the fragments obtained fluctuated between 3200 and 369 bp. The results showed that the clones analyzed had a genetic similarity rate of 94%. In addition, 70% of them were clustered in one major group. However, in spite of that... |
| Tipo: Journal article |
Palavras-chave: Germplasm; Genetic diversity; RAPD diversity. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000100001 |
| |
|
|
| Milan Pandey,Ram. |
| Twenty six accessions of grain Amaranths (Amaranthus hypochondriacus), including both indigenous and exotic introductions, were evaluated in the rabi season (winter crop, November-March). Based on D² analysis, the accessions were grouped into eleven clusters. Clusters I, II, and III had seven, four, and three accessions, respectively; clusters VII, VIII, IX and X had only one accession in each case. The accession in cluster V had the greatest divergence, closely followed by those of clusters IV and I. The maximum and minimum divergences were revealed between clusters VIII and XI and between II and VIL respectively. The pattern of clustering did not show any relationship with geographic origin. In a study of pattern of F2 segregation in 25 crosses involving... |
| Tipo: Journal article |
Palavras-chave: Amaranthus hypochondriacus; D² statistics; Genetic diversity; Grain amaranths. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000100007 |
| |
|
|
| Terra,Tatiana de Freitas; Wiethölter,Paula; Almeida,Cícero Carlos de Souza; Silva,Sérgio Delmar dos Anjos e; Bered,Fernanda; Sereno,Maria Jane Cruz de Melo; Barbosa Neto,José Fernandes. |
| Wild species are important sources of genetic variability and may be exploited by breeding programs. Crosses between teosinte and maize occur freely and teosinte serves as genetic source of agronomic traits for introduction in maize. The objective of this study was to estimate genetic variability among and within maize and teosinte populations (Zea mays mexicana). Two sweet maize populations (BR400 and BR402), two common maize populations (Suwan and Pampa) and one teosinte population were analyzed using microsatellites markers. Results indicated that 64,5% of the variation was detected within the populations, suggesting the possibility of obtaining genetic progress by selection within each population. The analysis with 25 microsatellites loci enabled the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays mays; Zea mays mexicana; Genetic diversity; Flooding tolerance; Molecular markers. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000200003 |
| |
|
|
| Yue,Qingchun; Zhang,Chenfei; Wang,Qinghao; Wang,Wenjing; Wang,Jinyang; Wu,Yueyan. |
| ABSTRACT: The objective of this study is to research the genetic diversity of the ‘ Zuijinxiang ’ grape and its mutant breeding F1 plants, we screened the excellent mutant plants with potential breeding value. 50 mutated single plants obtained from 137Cs-γ irradiated ‘Zuijinxiang’ grape seeds were used as research objects, and SCoT molecular marker technology was used for genetic diversity and variation analysis, and clustering research was carried out. The results showed that: (1) 36 SCoT primers produced abundant polymorphisms, and the amplification results showed obvious bright bands, and the amplification efficiency and polymorphism rate were 100%. (2) A total of 221 bands were amplified by 36 primers, of which 175 were rich in polymorphism, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grape; SCoT markers; Genetic diversity; Cluster analysis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001100406 |
| |
|
|
| Lopes,Jader Silva; Rorato,Paulo Roberto Nogara; Weber,Tomás; Araújo,Ronyere Olegário de; Everling,Dionéia Magda; Bresolin,Tiago; Dornelles,Mariana de Almeida; Breda,Fernanda Cristina. |
| The objective of this study was to evaluate the genetic divergence among Nellore breed animals raised in 45 farms in the Southern Region of Brazil. The characteristic studied was weaning weight adjusted to 205 days of life (P205), from 10,874 animals sired by 425 bulls and 7,629 cows, collected between 1976 and 2001, and distributed in the states of Rio Grande do Sul (1,499), Santa Catarina (2,332) and Paraná (7,043). The animals were distributed by cluster analysis in eight genetic divergent groups, enabling this technique to be applied to organize the matings in order to obtain heterotic effect. The herd/farm groups were formed through the hierarchical Ward method, using the direct (VGD) and maternal (VGM) breeding values predicted by the REML method.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cluster analysis; Genetic diversity; Multivariate analysis; Similarity; Ward hierarchical method. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000500020 |
| |
|
|
| Lima,Ana Patrícia Souza de; Silva,Suzianny Maria Bezerra Cabral da; Oliveira,Karine Kelly Cavalcanti; Maggioni,Rodrigo; Coimbra,Maria Raquel Moura. |
| The shrimp industry has grown significantly over the past 10 years in Brazil, especially the farmed production of the exotic Pacific white shrimp, Litopenaeus vannamei. In 2004, this industry was marked by a productivity crisis, which stirred interest towards genetic improvement of shrimp stocks. Shrimp breeders importation was banned in Brazil by a govern Normative Instruction in 1997, as a sanitary precaution. Since then, broodstock replacement in hatcheries has been based on domestic stocks, raising concerns on the decline of genetic diversity and if the existing diversity would allow effective genetic improvement programs. In the present research, genetic parameters such as number of alleles, effective allele number, expected and observed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litopenaeus vannamei; Population genetics; Genetic diversity; Microsatellite. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000200011 |
| |
|
|
| Oliveira,Vanice Dias; Rabbani,Allivia Rouse Carregosa; Silva,Ana Veruska Cruz da; Lédo,Ana da Silva. |
| This research had as objective to characterize genetically individuals of physic nut cultivated in experimental areas in Sergipe, Brazil by means of RAPD molecular markers. Leaves of 40 individuals were collected and DNA was isolated using CTAB 2% method. Were used 30 primers RAPD for DNA amplification, and this data was used to estimate the genetic similarity among the pairs of individuals, using Jaccard coefficient, and group them out for the UPGMA method. Also, the genetic structure and diversity of the populations were assessed using AMOVA. Of the 100 fragments generated, 29 of were polymorphic. A similarity average of 0.54 among the individuals was found and the amplitude similarities varied from 0.18 to 1.00. One of them (U5) was unit clusters and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jatropha curcas L.; RAPD; Genetic diversity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000600006 |
| |
|
|
| Fernandes,Murilo de Oliveira; Bianchi,Paola Alvares; Silva,Lígia Renata Almeida da; Vianna,Larissa Souza; Santos,Eileen Azevedo; Moulin,Monique Moreira. |
| ABSTRACT: The collection and characterization of tomato germplasm are of relevant importance for agriculture. This study aimed to collect and characterize, by way of morphological description and statistical tools for the composition of groups, tomato accesses from the Southern and Serrana regions of the State of Espírito Santo, as well as to establish the tomato germplasm bank of the Ifes - Campus de Alegre. Thirty-seven accessions were collected from different commercial locations of Espírito Santo. The experiment was conducted in the Ifes Campus de Alegre in the Agroecology sector. For the morpho-agronomic characterization, sixteen essential descriptors were used, nine quantitative and seven qualitative. In the color of the ripe fruit, there was the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Germplasm; Genetic diversity; Qualitative and quantitative characters. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100400 |
| |
|
|
| Lira,Ellen Grippi; Amabile,Renato Fernando; Fagioli,Marcelo; Montalvão,Ana Paula Leite. |
| ABSTRACT: Sunflower (Helianthus annuus L.) is an annual crop that stands out for its production of high quality oil and for an efficient selection, being necessary to estimate the components of genetic and phenotypic variance. This study aimed to estimate genetic parameters, phenotypic, genotypic and environmental correlations and genetic variability on sunflower in the Brazilian Savannah, evaluating the characters grain yield (YIELD), days to start flowering (DFL) based on flowering date in R5, chapter length (CL), weight of a thousand achenes (WTA), plant height (H) and oil content (OilC) of 16 sunflower genotypes. The experiment was conducted at Embrapa Cerrados, Planaltina, DF, situated at 15º 35’ 30”S latitude, 47º 42’ 30”W longitude and 1.007m above... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic diversity; Genetic resources; Genotypic correlations; Helianthus annuus L. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800402 |
| |
|
| |
|
|
| Amabile,Renato Fernando; Faleiro,Fábio Gelape; Capettini,Flávio; Peixoto,José Ricardo; Sayd,Ricardo Meneses. |
| ABSTRACT Recently, researches have shown that the Brazilian savannah has a great potential to supply the demand for barley grains. The purpose of this study was to assess the genetic variability in 39 elite barley (Hordeum vulgare L.) genotypes based on the agro-morphological traits of a crop irrigated in the savannah system. An irrigation experiment in the design of complete randomized block with four replicates was conducted at Federal District - Brazil. The evaluated traits were: distance from the last knot to the rachis, distance from the flag leaf to rachis, spike length, number of grains by ear, flag leaf area, plant height, silking, lodging, grain yield, thousand-seed weight, protein content and grain commercial classification. After using analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic diversity; Hordeum vulgare L.; Genetic resources; Savannah. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200147 |
| |
| Registros recuperados: 293 | |
|
|
|
