Consulta: subjectFacets:"Variety discrimination"
Registros recuperados: 2
Data/hora: 10/06/2024 15:32:32

Variety discrimination of Tigridia pavonia (L.f.) DC. assesed by different length RAPD primers
Provedor de dados: 69
Autores: Piña-Escutia,José Luis; Vázquez-García,Luis Miguel; Arzate-Fernández,Amaury Martín.
Tigridia pavonia (L.f.) DC. is one of the important phytogenetic resources of México. This species is used as ornamental, food and medicinal purposes. Despite its ornamental and economic potential, there is little information about the genetic variability. In this study, randomly amplified polymorphic DNA (RAPD) primers of 10, 15 and 20 bases were used to assess the level of genetic variation among nine botanical varieties of Tigridia pavoniacollected in three localities within State of México. The total number fragments, polymorphic fragments, percentage of polymorphism and resolving power were greater for 15 base (55, 52, 94.5 and 5, respectively) and 20 base (47, 45, 95.7 and 3.8, respectively), in comparison with those obtained from 10 base primers...
Tipo: Journal article
Palavras-chave: Genetic resources; RAPD; Tigridia pavonia; Variety discrimination.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400010

Sequence-characterized amplified region (SCAR) technique used for variety discrimination in vinca (Catharanthus roseus (L.) G.Don)
Provedor de dados: 95
Autores: Menezes,Carlos C.E; Vantoai,Tara; McDonald,Miller B; Sediyama,Tocio.
Sequence-Characterized Amplified Region (SCAR) appears as a useful technique for genetic purity testing and variety discrimination, applicable to species in which some other techniques have failed. In particular, this technique is very attractive with species in which RAPD results were not consistent. The RAPD polymorphic bands were cloned, sequenced and from the sequence information, primers pairs for normal PCR were developed. Since the probability of obtaining successful SCAR primers from RAPD polymorphic bands was about 50%, a larger number of RAPD polymorphic bands are needed to develop sufficient SCAR primers for varietal discrimination in vinca. In addition, the efficiency of the SCAR technique is strongly affected by the quality of DNA extracted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vinca; Seed; Variety discrimination; Molecular markers; SCAR.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222002000100041