Diversidade genética e caracterização fenotípica de Ochroma pyramidale em plantios no Mato Grosso, Brasil

Ciencia Florestal

article

Géssica Tais Zanetti¹  Eulalia Soler Sobreira Hoogerheide²  Ana Aparecida Bandini Rossi³  Maurel Behling²  Joyce Mendes Andrade Pinto² 

[1] Instituto Federal de Educação;Embrapa Agrossilvipastoril;Universidade do Estado de Mato Grosso Carlos Alberto Reyes Maldonado

关键词: Balsa wood;    Genetic variability;    Molecular markers;    Genetic improvement;   

DOI  :  10.5902/1980509865587

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Pesquisas Florestais

【 摘 要 】

This study evaluated balsa wood (Ochroma pyramidale) plantations in the search for matrices for genetic improvement. We were evaluated a total of 20 trees in plantations in Mato Grosso for genetic diversity with ISSR (Inter Simple Sequence Repeats) primers, as well as their diameter at breast height (DBH) and commercial height (CH). The primers amplified 111 loci (97.3% polymorphic), and the Nei genetic diversity (0.32) and Shannon index (0.48) indicate that there is genetic diversity in the plantations. The AMOVA revealed greater genetic variation within the plantations rather than among the plantations. The UPGMA group indicated the formation of nine groups, four of which had one individual each. As for phenotypic characterization, individuals 48 and 52 stand out for having higher DBH, and individuals 30 and 34 presented higher CH. Considering DBH and CH concomitantly, 12 individuals are within the standards. In the evaluated plantations, there is sufficient variability for the identification of balsa wood matrices.

【 授权许可】

CC BY-NC