Data/hora: 14/06/2024 16:49:56

Provedor de dados: | Ciência Rural
País: | Brazil
Título: | Genetic variability in maize and teosinte populations estimated by microsatellites markers
Autores: | 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.
Data: | 2011-02-01
Ano: | 2011
Palavras-chave: | Zea mays mays; Zea mays mexicana; Genetic diversity; Flooding tolerance; Molecular markers.
Resumo: | 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 identification of 92 alleles with a mean of 3.7 alleles per locus. The average Polymorphism Information Content (PIC) was 0.52. The percentage of polymorphic loci varied from 64% in the BR400 and Pampa populations to 80% in the teosinte population. The estimated genetic distance confirmed the genomic similarity of maize and teosinte.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000200003
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/S0103-84782011005000005
Formato: | text/html
Fonte: | Ciência Rural  v.41 n.2 2011
Fonte: | info:eu-repo/semantics/openAccess