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Almeida, João Paulo Nobre de; Lessa, Bruno Franca da Trindade; Pinheiro, Charles Lobo; Gomes, Fernanda Melo; Medeiros Filho, Sebastião; Silva, Cydianne Cavalcante. |
The objective of this work was to study the seed germination and seedling growth of A. cearensis (Allemão) A. C. Sm. influenced by seed weight and under different temperature and light conditions. Seeds were individually weighed and divided into three weight classes (light, medium and heavy), and each was subjected to germination tests under two light conditions (presence or absence) and six temperature regimes (20, 25, 30, 35, 40, and 20-30°C). The experiment was established with a completely randomized design in a split-split plot arrangement with four replicates. We determined the first count, final germination percentage and germination speed index. To assess seedling growth, the length and dry mass of the epicotyl and root + hypocotyl axis were also... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agronomia; Fitotecnia cumaru; Abiotic factors; Seed vigour. Produção e beneficiamento de sementes. |
Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32786 |
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Brito, Selma Freire de; Pinheiro, Charles Lobo; Nogueira, Francisco Carlos Barboza; Medeiros Filho, Sebastião; Matos, Dalva Maria da Silva. |
The invasion by Cryptostegia madagascariensis causes economic and environmental problems in Northeastern Brazil. Current study evaluates the initial growth of C. madagascariensis on light gradient. The experiment used 0, 30, 50 and 70% shading treatments arranged in a completely randomized design and evaluated in four periods, namely, 35, 50, 65 and 80 days. Height, absolute growth rate, relative growth rate, number of side branches, number of leaves, leaf area, specific leaf area, leaf area ratio, root mass ratio, stem mass ratio, leaf mass ratio and leaf area/root mass ratio were evaluated. Results showed that the height was greater in shade environments, and the greater the available light, the greater was the number of side branches. C.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Functional traits; Caatinga; Shading; Morphological adjustments; Biomass. |
Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/28179 |
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