Caracterização genética no crescimento inicial de progênies de Eremanthus erythropappus (DC.) MacLeish em Aiuruoca, MG, Brasil

Maria Lopes Martins  Avelar; Vitor Passos da  Silva Júnior; Lucas Rodrigues  Rosado; Flávia Maria Avelar  Gonçalves; Adriano José  Pavan; Lucas Amaral de  Melo

doi:10.1590/2236-8906-14/2020

##article.authors##

Maria Lopes Martins Avelar Universidade Federal de Lavras, Avenida Dr. Sílvio Menicucci, s/n, Aquenta Sol, Campus Universitário, 37200-900 Lavras, MG, Brasil https://orcid.org/0000-0001-6790-685X
Vitor Passos da Silva Júnior Universidade Federal de Lavras, Avenida Dr. Sílvio Menicucci, s/n, Aquenta Sol, Campus Universitário, 37200-900 Lavras, MG, Brasil https://orcid.org/0000-0002-0194-9301
Lucas Rodrigues Rosado Universidade Federal de Lavras, Avenida Dr. Sílvio Menicucci, s/n, Aquenta Sol, Campus Universitário, 37200-900 Lavras, MG, Brasil
Flávia Maria Avelar Gonçalves Universidade Federal de Lavras, Avenida Dr. Sílvio Menicucci, s/n, Aquenta Sol, Campus Universitário, 37200-900 Lavras, MG, Brasil https://orcid.org/0000-0003-4652-1824
Adriano José Pavan Universidade Federal de Lavras, Avenida Dr. Sílvio Menicucci, s/n, Aquenta Sol, Campus Universitário, 37200-900 Lavras, MG, Brasil https://orcid.org/0000-0003-0694-9877
Lucas Amaral de Melo Universidade Federal de Lavras, Avenida Dr. Sílvio Menicucci, s/n, Aquenta Sol, Campus Universitário, 37200-900 Lavras, MG, Brasil

DOI:

https://doi.org/10.1590/2236-8906-14/2020

Keywords:

candeia, forest genetic resources, genetic improvement

Abstract

MacLeish in Aiuruoca, Minas Gerais State, Brazil). Eremanthus erythropappus (DC.) MacLeish is a native species, economically appreciated due to its wood and the extraction of essential oil, whose active ingredient is alphabisabolol, but studies on genetic improvement of this species are still scarce. The aim of this study was to evaluate survival, genetic variability and estimate genetic parameters in E. erythropappus progenies in the field at 15, 22 and 30 months of age. The experiment was set up at Fazenda Guapiara, in Aiuruoca, Minas Gerais State, where seedlings of 15 progenies were planted in a randomized block design with five replications and six plants per plot. Plant height evaluations were performed and genetic studies were carried out in the SELEGEN software using the REML/BLUP method. At 30 months, the percentage of seedling survival was evaluated. Significant differences were observed between progenies, and the highest estimates of h²_mp (0.48) and Ac_prog (0.69) were found at 30 months. Therefore, even in the juvenile stage, it was possible to identify genetic variability and analyze its expression over time, which makes it possible to continue studies of genetic improvement of the species.