Genetic diversity of irrigated barley based on molecular and quantitative data and on malting quality

Pesquisa Agropecuária Brasileira

Renato Fernando Amabile²  Fábio Gelape Faleiro²  Eduardo Alano Vieira²  José Ricardo Peixoto¹  Flávio Capettini¹  Walter Quadros Ribeiro Júnior² 

[1] ,Embrapa CerradosPlanaltina DF

关键词: Hordeum vulgare;    breeding;    Cerrado;    cluster analysis;    genetic resources;    selection indices;    Hordeum vulgare;    melhoramento;    Cerrado;    análise de grupamento;    recursos genéticos;    índices de seleção;   

DOI  :  10.1590/S0100-204X2013000700007

来源: SciELO

【 摘 要 】

The objective of this work was to quantify the genetic diversity of elite genotypes of irrigated barley in the Brazilian savanna. Thirty elite barley genotypes from Embrapa Cerrados' collection were evaluated using 160 RAPD markers, 12 agronomic traits related to yield components, and 10 malting quality parameters. The genetic dissimilarity matrices based on molecular markers, quantitative traits, and malting quality characters were calculated and a cluster analysis was performed using the unweighted pair-group method with arithmetic mean (UPGMA) as grouping criterion. High genetic diversity among accessions were observed. The estimated genetic dissimilarities were weakly correlated, showing the complementarity of the different character groups. Selection indices and graphical dispersion analysis allowed the selection of promising genotypes and the indication of suitable crosses for maximizing the heterotic effects in breeding programs for irrigated barley in the Brazilian savanna.

【 授权许可】

CC BY   
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