| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000412318 |
| ISSN: | 0001-3765 |
| Authors: | Carvalho, Juliana O. de1 Toebe, Marcos2 Tartaglia, Francieli L3 Bandeira, Cirineu T4 Tambara, Andre L3 |
| Institutions: | 1Universidade Federal de Pelotas, Departamento de Botanica, Pelotas, Rio Grande do Sul. Brasil 2Universidade Federal de Santa Maria, Departamento de Ciencias Agronomicas e Ambientais, Frederico Westphalen, Rio Grande do Sul. Brasil 3Universidade Federal do Pampa, Campus Itaqui, Itaqui, Rio Grande do Sul. Brasil 4Universidade Federal de Santa Maria, Departamento de Fitotecnia, Santa Maria, Rio Grande do Sul. Brasil |
| Year: | 2017 |
| Season: | Sep |
| Volumen: | 89 |
| Number: | 3 |
| Pages: | 1851-1868 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | The goal of this study was to estimate the leaf area of Crotalaria juncea according to the linear dimensions of leaves from different ages. Two experiments were conducted with C. juncea cultivar IAC-KR1, in the 2014/2015 sowing seasons. At 59, 82, 102, 129 days after sowing (DAS) of the first and 61, 80, 92, 104 DAS of the second experiment, 500 leaves were collected, totaling 4,000 leaves. In each leaf, the linear dimensions were measured (length, width, length/width ratio and length × width product) and the specific leaf area was determined through Digimizer and Sigma Scan Pro software, after scanning images. Then, 3,200 leaves were randomly separated to generate mathematical models of leaf area (Y) in function of linear dimension (x), and 800 leaves for the models validation. In C. juncea, the leaf areas determined by Digimizer and Sigma Scan Pro software are identical. The estimation models of leaf area as a function of length × width product showed superior adjustments to those obtained based on the evaluation of only one linear dimension. The linear model Ŷ=0.7390x (R2=0.9849) of the real leaf area (Y) as a function of length × width product (x) is adequate to estimate the C. juncea leaf area |
| Disciplines: | Biología |
| Keyword: | Angiospermas, Ecología, Anatomía vegetal, Area foliar, Procesamiento de imágenes, Crecimiento vegetal, Crotalaria juncea, Leguminosae |
| Keyword: | Biology, Angiosperms, Ecology, Plant anatomy, Leaf area, Images processing, Plant growth, Crotalaria juncea, Leguminosae |
| Full text: | Texto completo (Ver HTML) |
