Genetic characterization of ninety elite soybean cultivars using coefficient of parentage

Pesquisa Agropecuária Brasileira

Zilda De Fátima Sgobero Miranda²  Carlos Alberto Arrabal Arias¹  Cássio Egidio Cavenaghi Prete²  Romeu Afonso De Souza Kiihl¹  Leones Alves De Almeida¹  José Francisco Ferraz De Toledo¹  Deonisio Destro² 

[1] ,Universidade Estadual de Londrina Dep. de Agronomia Londrina PR ,Brazil

关键词: Glycine max;    effective population size;    genetic similarity;    parentage coefficient;    Glycine max;    similaridade genética;    tamanho efetivo populacional;   

DOI  :  10.1590/S0100-204X2007000300009

来源: SciELO

【 摘 要 】

The objective of this work was to estimate the coefficient of parentage and to understand the genetic structure of 90 elite soybean cultivars, which are adapted to different Brazilian environments. A total of 4,005 coefficients of parentage (f) were obtained and used to group the cultivars by UPGMA method. The constructed dendrogram showed several related cultivar groups which shared similar ancestors and clearly showed the genetic structure of the main Brazilian cultivars. Effective population sizes (Ne) were also estimated for cultivars in different generations. The average f = 0.2124 value, obtained from cultivars classified into four decades according to the release year, suggested effective soybean population sizes of 11 and 13 calculated using arithmetic and weighted means, respectively. The relatively small Ne and the high parentage coefficient support the conclusion that there is a high similarity degree among the main soybean cultivars in Brazil.

【 授权许可】

CC BY   
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