Data/hora: 02/06/2024 09:00:55

Provedor de dados: | Ciência Rural
País: | Brazil
Título: | Storage protein variability in natural populations of maté (Ilex paraguariensis) in Brazil
Autores: | Gregianini,Tatiana Schäffer; Winge,Helga.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | ‘chimarrão’; Germoplasm banks; Population genetics.
Resumo: | ABSTRACT:  Samples of 168 maté trees (Ilex paraguariensis) from four natural populations of different states of Brazil (Rio Grande do Sul, Santa Catarina, Paraná and Mato Grosso do Sul) were analyzed for their variability in storage proteins seed, which were used to estimate the degree of differentiation among and within species, because are relatively stable during evolution. Data on band presence/absence from 80 different polypeptides were used to perform similarity coefficient of Jaccard. A high level of genetic variability was reported within sampled populations (SJ intra=0.374). Lower levels of diversity were observed between populations (SJ inter=0.308). Total genetic diversity of maté was Hsp=0.264 estimated by Shannon measure. Partition of that value disclosed that 95 % of the total diversity is within-population, and only 5% to between-populations. The phenogram based on King’s distances indicates a certain degree of geographic differentiation. This represents the first study on storage protein variability in I. paraguariensis and guides the choice of the specimens to increment germoplasm banks and genetic improvement programs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200750
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20180451
Formato: | text/html
Fonte: | Ciência Rural  v.49 n.2 2019
Fonte: | info:eu-repo/semantics/openAccess