Multivariate analysis on dry mass variables in cupuassu progenies (Theobroma grandiflorum) in function of the plant age
| Autor: | Fábio dos Reis Ribeiro Araújo, Sávia Poliana da Silva, Socorro de Fátima Souza da Silva Viégas, Dilson Augusto Capucho Frazão, Cândido Ferreira de Oliveira Neto, Ismael de Jesus Matos Viégas, Ricardo Shigueru Okumura, Diocléa Almeida Seabra Silva, Heráclito Eugênio Oliveira da Conceição, Mário Lopes da Silva Júnior |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Multivariate analysis Vegetative reproduction 04 agricultural and veterinary sciences Biology biology.organism_classification 01 natural sciences Horticulture Dry weight Multicollinearity 040103 agronomy & agriculture Econometrics 0401 agriculture forestry and fisheries Theobroma grandiflorum Dry matter General Agricultural and Biological Sciences Canonical correlation Completely randomized design 010606 plant biology & botany |
| Zdroj: | African Journal of Agricultural Research. 11:1227-1236 |
| ISSN: | 1991-637X |
| Popis: | The aims of this study was to evaluate the dry matter production in different parts of cupuassu plant (Theobroma grandiflorum), such as leaves, stems, primary and secondary branches in progenies resistant to pests and diseases (Codajas and Manacapuru) in function of the plant age, through the application of multivariate statistical analysis. The experiment was conducted at Embrapa Amazonia Oriental for a period of four years, in a randomized design. Samples were taken of five trees of each progeny, resulting in a total of 40 plants, which were separated into leaves, stems, primary and secondary branches. In each group of variables, the assumptions of canonical correlation analysis were tested, such as multivariate normal, the homoscedasticity deviations, multicollinearity, linearity in the dry mass of plant parts and correlation matrices that test the significance of the experimental data. Plants of PMI186 and PMI215 showed significant canonical correlations between the most variable groups of leaves, stems, primary branches and secondary branches, indicating that the groups are not considered independent, showing a linear relationship between them. In the dry matter of leaves, stems, primary and secondary branches index showed a high degree of significance for the Pearson test when related to parts of cupuassu plants. The largest production of total dry matter was obtained in PMI186 with 4332.92 g plant-1 in secondary branches (4th year) and the lowest production showed in PMI215 with 4086.26 g plant-1 in the secondary branch (4th year). Key words: Linear relationships, vegetative growth, cluster analysis. |
| Databáze: | OpenAIRE |
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