Morphoagronomic characterization of sweet potato accessions from the germplasm bank of Embrapa hortaliças

  • Rosa maria de Deus de Sousa Universidade de Brasília UnB
  • José Ricardo Peixoto Universidade de Brasília- UnB
  • Geovani Bernardo Amaro Centro Nacional de Pesquisas em Hortaliças-CNPH
  • Michelle Sousa Vilela Universidade de Brasília- UnB
  • Paula Andrea Osorio Carmona Universidade de Brasília UnB
Keywords: genetic parameters, genotypes, sweet potato vegetative organs

Abstract

Studies on the determination of genetic divergence among genotypes are important tools in breeding programs, contributing to the identification of parents with considerable productive potential. However, little is known about the combinatorial capacity of sweet potato (Ipomoea batatas) accessions and its adaptation to the different regions of Brazil. The objective of this study was to evaluate the morpho-agronomic traits from 102 sweet potato accessions from the Germplasm Bank of Embrapa Hortaliças. The experiment was laid out as an augmented block design comprised of 102 treatments. Nineteen above ground traits were measured using descriptors for the respective parts. Estimated values of broad sense heritability were high for the traits mean branch length (95.75%), immature leaf color (85.06%), and predominant branch  color (90.57%). Coefficients of environmental variation were below 30.00% for all variables, except for branch weight (51.62%). The 102 clones analyzed presented broad genetic variability for the different traits evaluated, especially for branch weight, and branch length, and mature leaf color.

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Author Biographies

Rosa maria de Deus de Sousa, Universidade de Brasília UnB
Departamento de Pós graduação em Agronomia
José Ricardo Peixoto, Universidade de Brasília- UnB

Departamento de Agronomia e Medicina Veterinária

Geovani Bernardo Amaro, Centro Nacional de Pesquisas em Hortaliças-CNPH
Pesquisa e melhoramento de plantas
Michelle Sousa Vilela, Universidade de Brasília- UnB

Departamento de Agronomia e Medicina Veterinária

Paula Andrea Osorio Carmona, Universidade de Brasília UnB
Departamento de Pós Graduação em Agronomia
Published
2019-10-15
How to Cite
de Sousa, R. maria de D., Peixoto, J. R., Amaro, G. B., Vilela, M. S., & Carmona, P. A. O. (2019). Morphoagronomic characterization of sweet potato accessions from the germplasm bank of Embrapa hortaliças. Bioscience Journal, 35(6). https://doi.org/10.14393/BJ-v35n6a2019-42434
Section
Agricultural Sciences