Consulta: subjectFacets:"Cultivar characterization"
Registros recuperados: 3
Data/hora: 10/06/2024 14:05:06

Genetic variability in Brazilian wheat cultivars assessed by microsatellite markers
Provedor de dados: Genetics and Molecular Biology
Autores: Schuster,Ivan; Vieira,Elisa Serra Negra; Silva,Glacy Jaqueline da; Franco,Francisco de Assis; Marchioro,Volmir Sérgio.
Wheat (Triticum aestivum) is one of the most important food staples in the south of Brazil. Understanding genetic variability among the assortment of Brazilian wheat is important for breeding. The aim of this work was to molecularly characterize the thirty-six wheat cultivars recommended for various regions of Brazil, and to assess mutual genetic distances, through the use of microsatellite markers. Twenty three polymorphic microsatellite markers (PMM) delineated all 36 of the samples, revealing a total of 74 simple sequence repeat (SSR) alleles, i.e. an average of 3.2 alleles per locus. Polymorphic information content (PIC value) calculated to assess the informativeness of each marker ranged from 0.20 to 0.79, with a mean of 0.49. Genetic distances among...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Germplasm; Cultivar characterization; Cluster analysis; Molecular markers.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000300019

Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
Provedor de dados: Scientia Agricola
Autores: Henkrar,Fatima; El-Haddoury,Jamal; Ouabbou,Hassan; Nsarellah,Nasserlehaq; Iraqi,Driss; Bendaou,Najib; Udupa,Sripada Mahabala.
ABSTRACT It has been argued that genetic diversity in crop varieties has been on the decline in recent times due to plant breeding. This can have serious consequences for both the genetic vulnerability of crops and their plasticity when responding to changes in production environments. It is, therefore, vital for plant breeding programs to maintain sufficient diversity in the cultivars deployed for multi-period cultivation. In this study, to understand the temporal genetic diversity in durum wheat, 21 improved durum wheat cultivars released in Morocco, since 1956 and five exotic cultivars currently used in crossing programs were analyzed using 13 microsatellite markers. The analysis revealed a total of 44 alleles and average genetic diversity of 0.485 with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum turgidum L. subsp. durum; Cultivar characterization; SSR markers.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200134

Comparison of multiallelic distances for the quantification of genetic diversity in the papaya - doi: 10.4025/actasciagron.v33i1.11698
Provedor de dados: Acta Scientiarum: Agronomy
Autores: Ramos, Helaine Christine Cancela; Universidade Estadual do Norte Fluminense; Pereira, Messias Gonzaga; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Gonçalves, Leandro Simões Azeredo; Universidade Estadual do Norte Fluminense; Amaral Júnior, Antonio Teixeira do; Universidade Estadual do Norte Fluminense; Scapim, Carlos Alberto; Universidade Estadual de Maringá.
This study aimed to compare multiallelic distances to quantify genetic diversity in papaya. We evaluated forty-three individuals in the S2 generation, from the backcross between F1 (Cariflora x SS783) and Cariflora, and four accessions from the UENF/Caliman Germplasm Bank. Genetic distances used were Smouse and Peakall (1999), Kosman and Leonard (2005) and weighted index. Clustering among genotypes was performed using the hierarchical unweighted pair-group method with arithmetic mean analysis (UPGMA) and projection of the distance on the bidimensional plan. A high correlation between genetic distances was observed; however, through UPGMA group analysis, the distance determined by the weighted index provided the complete separation of 52BC1S2-08, 52BC1S2-29...
Palavras-chave: Carica papaya L.; Microsatellite markers; Cultivar characterization; Cluster analysis Carica papaya L.; Microsatellite markers; Cultivar characterization; Cluster analysis.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/11698