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- Title
High-throughput phenotyping as an auxiliary tool in the selection of corn hybrids for agronomic traits.
- Authors
Ferreira de Alcântara, Júlia; Garcia dos Santos, Regimar; Rojo Baio, Fábio Henrique; da Silva Júnior, Carlos Antonio; Eduardo Teodoro, Paulo; Ribeiro Teodoro, Larissa Pereira
- Abstract
High-throughput phenotyping (HTP) using vegetation indices (VIs) is an important data source for managing plant breeding programs and can be a promising tool in indirect selection. This study hypothesized that VIs are correlated with agronomic traits in corn, and therefore, HTP can be an auxiliary tool for selecting superior genotypes. The objectives were: i) to analyze the association between agronomic traits and VIs, and ii) to identify superior corn hybrids for the evaluated traits using multivariate techniques. Ten corn hybrids (AGRI 330, AGRI 340, FS575PWU, KTZ006VP3, MG545AW, MG580PW, MG711PW, MZ1780, MZ1952, and TROPI 102) were evaluated for plant height (PH), stem diameter (SD), and grain yield (GY). The VIs studied were NDVI, NDRE, EVI, GNDVI, SAVI, and MSAVI. Pearson’s correlation network was constructed to analyze the relationship between the variables, and a canonical analysis was performed to verify the inter-relationship between the variables and hybrids. The VIs evaluated are strongly positively correlated with each other and with PH. The most productive hybrids are MG545AW, FS575PWU and KTZ006VP3. Hybrid MZ1952 has higher correlations with VIs and PH. The findings reveal that VIs can be excellent auxiliary variables for selecting agronomically superior genotypes, being a promising alternative to increase corn breeding efficiency.
- Subjects
PLANT breeding; PEARSON correlation (Statistics); CORN breeding; PRECISION farming; HYBRID corn; GRAIN yields; MULTIVARIATE analysis; HYBRID rice
- Publication
Revista Ceres, 2023, Vol 70, Issue 1, p106
- ISSN
0034-737X
- Publication type
Article
- DOI
10.1590/0034-737X202370010012