|
|
|
| Registros recuperados: 293 | |
|
| |
|
|
| Souza,L.S.A.; Silva,J.F.; Lopes,M.T.G.; Bentes,J.L.S.; Valente,M.S.F.; Costa Neto,P.Q.. |
| Weeds in pastures can intoxicate animals, and Arrabidaea bilabiata is the most important species for herbivores in floodplain areas in the Amazon Basin. Genetic diversity studies in natural populations may contribute to the better understanding of the range of toxicity and the genetic variability organization in this species. The objective of this study was to assess the variability and genetic structure in six populations of A. bilabiata sampled in floodplain areas in three municipalities of the Amazonas State, from the AFLP markers analysis. AFLP markers were efficient to characterize the genetic variability of the 65 individuals analyzed. From four combinations of oligonucleotides, a total of 309 AFLP fragments was obtained, where 304 (98.38%) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arrabidaea bilabiata; Pasture weeds; Poisonous plants; AFLP; Genetic diversity. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200213 |
| |
|
| |
|
| |
|
|
| Day-Rubenstein, Kelly A.; Heisey, Paul W.; Shoemaker, Robbin A.; Sullivan, John; Frisvold, George B.. |
| Crop genetic resources are the basis of agricultural production, and significant economic benefits have resulted from their conservation and use. However, crop genetic resources are largely public goods, so private incentives for genetic resource conservation may fall short of achieving public objectives. Within the U.S. germplasm system, certain crop collections lack sufficient diversity to reduce vulnerability to pests and diseases. Many such genetic resources lie outside the United States. This report examines the role of genetic resources, genetic diversity, and efforts to value genetic resources. The report also evaluates economic and institutional factors influencing the flow of genetic resources, including international agreements, and their... |
| Tipo: Report |
Palavras-chave: Genetic resources; Genetic diversity; Germplasm; R&D; International transfer of genetic resources; In situ conservation; Ex situ conservation; Gene banks; Intellectual property.; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2005 |
URL: http://purl.umn.edu/59388 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Glasenapp,Jacqueline Siqueira; Barbosa,Priscila Barros; Casali,Vicente Wagner Dias; Martins,Ernane Ronie; Cruz,Cosme Damião. |
| Leaves and fruits from 63 Stryphnodendron adstringens trees were sampled in the Rio Preto State Park to analyze allozyme segregation, tissue specific expression of allozyme loci, and their genetic parameters. The enzyme systems ADH, EST, ACP, PGM, PGI, GDH, G6PDH, GOT, IDH, LAP, MDH, PER and SKDH were assessed by means of starch-gel electrophoresis. The polymorphic systems PGI, IDH, MDH and GOT demonstrated a dimeric quaternary structure, while EST and PER were monomeric. The total expected genetic diversity (H E) for leaves and seeds were 0.325 and 0.244 respectively. The effective number of alleles per locus (A E) was 1.58 in leaves and 1.42 in seeds. The values of H E and A E observed in S. adstringens were comparatively higher than the average values... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allozyme segregation; Genetic diversity; Heterozygosity; Medicinal plants. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000200003 |
| |
|
|
| Bai,JY; Pang,YZ; Qi,YX; Zhang,XH; Yun,XY. |
| ABSTRACT Aiming at accelerating the application of molecular markers in the genetic improvement of quails, six EST-SSR markers were successfully developed using a bioinformatics method. Polymorphisms of three quail populations (Chinese yellow quail, China black quail and Korean quail) were detected. The results showed that there were 2-6 alleles in six EST-SSR markers. Mean polymorphism information contents of Chinese yellow quails, Chinese black quails and Korean quails were determined as 0.5451, 0.4962 and 0.4937, respectively. Average heterozygosity valuesof 0.6134, 0.5759 and 0.5613 were calculated. Among the six EST-SSR markers, three were highly polymorphic, and the other three were moderately polymorphic. The newly-developed six EST-SSR markers may... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chinese yellow quail EST-SSR Bioinformatics; Genetic diversity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500027 |
| |
|
|
| Bai,JY; Pang,YZ; Zhang,XH; Yun,YX; Qi,YX. |
| ABSTRACT Polymorphism of three quail communities was analyzed by using 12 microsatellite markers in this paper, aiming to provide scientific references for the evaluation, protection and utilization of quail genetic resources in China. Results demonstrated that the number of observed alleles by 12 microsatellite markers ranges between 4~7. The average polymorphism information contents (PIC) of the Chinese yellow quail, the Chinese black quail and the Korean quail, as detected by 12 microsatellite markers, are 0.6853, 0.6401 and 0.6565,respectively, and average heterozygosity values are 0.7333, 0.6957 and 0.7111, respectively. This indicates that the Chinese yellow quail has the richest genetic polymorphism. According to cluster analysis, the Chinese black... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chinese black quail; Microsatellite marker; Polymorphism; Genetic diversity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300519 |
| |
|
|
| Khan,MKI; Ali,M; Akter,MA; Zaman,S; Miah,G. |
| ABSTRACT Hilly chickens were characterized from January 2015 to September 2016 considering climate factors (light and heat). The experimental birds were divided into three groups (heat stress; light and control). The heat was generated in the chicken’s shelter by a black shaded light (Lantern) for two to three hours more after sunset. A lighting device (Lantern) was kept in the chicken’s shelter for the same period for increasing daylight duration. The individual chicken’s egg production, egg weight and mature live weight were studied from onset of egg production. It was observed that reddish brown hilly type chicken produced more (100.80 no/year/chicken) and larger sized (43.21g) eggs than spotted chicken (83.4 no/year/chicken and 40.46g). Among the three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chicken; Climatic factors; Microsatellite; Genetic diversity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400731 |
| |
|
|
| Barbosa,Leonardo de Paiva; Costa,Patrícia Freitas; Ribeiro,Paula Rose Almeida; Rufini,Márcia; Guimarães,Amanda Azarias; Moreira,Fatima Maria de Souza. |
| ABSTRACT High yields obtained from soybean [Glycine max (L.) Merrill], and consequent profits, are related to efficient symbiosis of soybean with nitrogen fixing bacteria of the Bradyrhizobium genus. Inoculation with strains belonging to the Bradyrhizobium japonicum, B. elkanii, and B. diazofficiens species, approved by the Brazilian Ministry of Agriculture (MAPA), is a common practice for this crop. However, variations in the composition of inoculants can change the quality of the product. The aim of this study was to genetically identify and to evaluate the symbiotic efficiency of isolates with cultural characteristics different from those of strains approved by MAPA and which are present in two commercial inoculants for soybean. Isolates obtained from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; 16S rRNA gene; Cultural characterization; Rhizobia; Genetic diversity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100432 |
| |
|
| |
|
|
| Kishi,Luciano Takeshi; Wickert,Ester; Lemos,Eliana Gertrudes de Macedo. |
| The first phytopathogenic bacterium with its DNA entirely sequenced is being detected and isolated from different host plants in several geographic regions. Although it causes diseases in cultures of economic importance, such as citrus, coffee, and grapevine little is known about the genetic relationships among different strains. Actually, all strains are grouped as a single species, Xylella fastidiosa, despite colonizing different hosts, developing symptoms, and different physiological and microbiological observed conditions. The existence of genetic diversity among X. fastidiosa strains was detected by different methodological techniques, since cultural to molecular methods. However, little is know about the phylogenetic relationships developed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: FAFLP; Xylella fastidiosa; Genetic diversity; DNA fingerprinting. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452008000100037 |
| |
|
| |
|
|
| ASTUDILLO,YANIK IXCHEL MALDONADO; TEJACAL,IRÁN ALIA; NÚÑEZ-COLÍN,ALBERTO CARLOS; HERNÁNDEZ,JAVIER JIMÉNEZ; MARTÍNEZ,VÍCTOR LÓPEZ. |
| ABSTRACT Fruits from 86 ecotypes of Mexican plum were harvested from the states of Guerrero and Morelos during the dry season. Of these, 22 were wild ecotypes and 64 were cultivated varieties. Among the variables measured, those with the highest variation coefficients were color, flavor, and mass (> 45%), highlighting the presence of considerable intra-species variability. Cluster analysis separated the 86 accessions into 5 groups, mainly on the basis of color, flavor, length, and mass. Members from the first three groups had red (Group I), yellow (Group II), or purple (Group III) epicarps and higher values of mass (12.2-16 g), length (29.6-33.9 mm), pulp yield (68.8-71.9% ), TSS (11.16-11.52 °Brix) and flavor index (14.5-18.3), making them suitable... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality; Canonical discriminant analysis; Cluster analysis; Genetic diversity; Underutilized crops. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200302 |
| |
|
|
| Oliveira,Eder Jorge de; Costa,Juliana Leles; Santos,Lucas Ferraz dos; Carvalho,Fabiana Moraes de; Silva,Aline dos Santos; Dantas,Jorge Luiz Loyola. |
| Due to the low genetic variability reported in the commercial plantations of papaya (Carica papaya L.), the objective of this study was analyze the genetic diversity of 32 genotypes including cultivars, landraces, inbred lines, and improved germplasm using the AFLP technique (Amplified Fragment Length Polymorphism). The genetic distance matrix was obtained using the Nei and Li genetic distance and clustering was performed using the unweighted pair-method with arithmetic mean (UPGMA). Using 11 combinations of EcoRI/MseI primers, 383 polymorphic bands were obtained. On average, 34.8 polymorphic bands were obtained per primer combination. Five clusters were formed. The traditional cultivar 'Sunrise' and the inbred line CMF-L30-08 were the closest genotypes,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Papaya breeding; Genetic resources; Genetic diversity; Carica papaya L. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000300020 |
| |
|
|
| Aukar,Ana Paula de Andrade; Lemos,Eliana Gertrudes de Macedo; Oliveira,João Carlos. |
| It has been evaluated the genetic variability through the use of RAPD molecular markers on the following passionflower species: Passiflora amethystina, P. caerulea, P. cincinnata, P. coccinea, P. serrato digitata, P. foetida, P. maliformis, P. alata, P. giberti, P. laurifolia, P. macrocarpa, P. nitida, P. setacea, P. suberosa, P. ligularis, P. capsularis, P. edulis Sims and its botanical variety P. edulis Sims f. flavicarpa Deg. In this research work, the analyses of the random amplified polymorphic DNA products (RAPD) were employed to estimate the genetic diversity and the taxonomic linkage within the species above. The total of 21 primers were used in this study which generated 270 different polymorphic products. It was possible to detect that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA; Genetic diversity; Passion fruit; Random Amplified Polymorphic DNA. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452002000300044 |
| |
| Registros recuperados: 293 | |
|
|
|
