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Root trait variability in Coffea canephora genotypes and its relation to plant height and crop yield
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Orientador(es)
Resumo(s)
Co ee breeding based on root traits is important to identify productive genotypes under
adverse environmental conditions. This study assessed the diversity of root traits in Co ea canephora
and its correlation with plant height and crop yield. Undisturbed soil samples were collected down
to 60 cm from 43 co ee genotypes, in which one of them was propagated by seed and all others
by stem cutting. The roots were washed, scanned, and processed to quantify root length density,
root volume, root superficial area, and root diameter. Additionally, plant height and crop yield
were also assessed. Root length density ranged from 40 to 1411 mm cm3, root volume from 6 to
443 mm3 cm3, root superficial area from 61 to 1880 mm2 cm3, and root diameter from 0.6 to 1.1 mm.
Roots were concentrated in the topsoil (0–20 cm) for most genotypes. In deeper depths (30–60 cm),
root length density, root volume, and root superficial area were higher in genotypes 14, 25, 31, and 32.
Positive correlations were found between root traits and both plant height and crop yield. The results
of this work may contribute to the overall cultivation of C. canephora, specially for crop breeding in
adverse environmental conditions
Descrição
Palavras-chave
conilon coffee robusta coffee crop breeding root morphology root diversity root architecture
Contexto Educativo
Citação
Agronomy 2020, 10, 1394
Editora
MDPI