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| Silva Júnior, Jessé Marques da; Universidade Federal de Lavras (UFLA); Rodrigues, Marcelo; Universidade Federal de Lavras (UFLA); Castro, Evaristo Mauro de; Universidade Federal de Lavras (UFLA); Bertolucci, Suzan Kelly Vilela; Universidade Federal de Lavras (UFLA); Pasqual, Moacir; Universidade Federal de Lavras (UFLA). |
| The environmental and nutritional conditions during plant growth can influence cell differentiation, resulting in anatomical and physiological adaptations. The objective of this study was to investigate the anatomical characteristics and chlorophyll content of L. purpurata during in vitro propagation when different concentrations of urea were applied. After 120 days of culture in a greenhouse, the growth characteristics, chlorophyll content, leaf anatomy and root features were assessed. Plants cultivated in a medium containing 75% urea exhibited modifications in their growth, increase in the number of leaves and roots, changes in the leaf and root dry matter content. There was an increase in the contents of “a” and “b” chlorophyll in plants treated with... |
| Tipo: Pesquisa científica |
Palavras-chave: 5.00.00.00-4 Laelia purpurata; Cultivation in vitro; Sources of organic nitrogen Ciências Agrárias; Agronomia. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15356 |
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| Bezerra, Cíntia Souza; Universidade Federal Rural de Pernambuco; Correia, Kamila Câmara; Universidade Federal Rural de Pernambuco; Câmara, Marcos Paz Saraiva; Universidade Federal Rural de Pernambuco; Sales Junior, Rui; Universidade Federal Rural do Semi-Árido; Armengol, Josep; Instituto Agroforestal Mediterráneo; Michereff, Sami Jorge; Universidade Federal Rural de Pernambuco. |
| The population structure of Monosporascus cannonballus, which causes vine decline in melons, was assessed based on the determination of mycelial compatibility groups (MCGs) in a collection of 58 isolates obtained from seven melon fields in three municipalities of Northeastern Brazil. For comparison, an additional 11 isolates of M. cannonballus from Spain were included in the analysis. MCGs were determined through comparisons of paired isolates growing on PDA culture media in the dark at 30ºC in various combinations. The Brazilian isolates were assigned into four MCGs: MCG-1 (n = 35 isolates), MCG-2 (n = 20), MCG-3 (n = 2), and MGC-4 (n = 1). MCG-1 and MCG-2 included isolates from all surveyed areas. The Spanish isolates were assigned into six different... |
| Tipo: Pesquisa científica |
Palavras-chave: 5.01.02.01-0 Cucumis melo; Melon; Vine decline; Soilborne pathogen; Genetic diversity Fitopatologia Cucumis melo; Melon; Vine decline; Soilborne pathogen; Genetic diversity. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15182 |
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