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| Nogueira,Rejane Jurema Mansur Custódio; Albuquerque,Manoel Bandeira de; Silva Junior,Josué Francisco. |
| Procedeu-se a um estudo em plântulas de mangabeira, com o objetivo de avaliar a germinação, crescimento inicial e relações hídricas em casa de vegetação. O delineamento experimental utilizado foi o inteiramente casualizado, com 50 repetições e três tipos de substratos: areia autoclavada, solo natural coletado em pomar espontâneo da espécie e uma mistura de húmus, areia e terriço vegetal na proporção de 2: 4: 4 (v/v/v). Verificaram-se a porcentagem de germinação, índice de velocidade de emergência (IVG), altura das plântulas, número de folhas, temperatura foliar (Tf), transpiração (E) e resistência difusiva (Rs). Foram mensuradas também a temperatura (Tar), umidade relativa (UR) e a radiação fotossinteticamente ativa (PAR). Os maiores percentuais de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hancornia speciosa; Mangaba; Crescimento; Resistência difusiva; Transpiração; Fruticultura tropical. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452003000100006 |
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| Santos,Roseane Cavalcanti dos; Ferraz,Gabriela de Morais Guerra; Albuquerque,Manoel Bandeira de; Lima,Liziane Maria de; Melo Filho,Péricles de Albuquerque; Ramos,Alessandra de Rezende. |
| The temporal expression of gene sor1 and the inhibitory effect of Sorghum bicolor L. Moench against weeds were studied by semiquantitative polymerase chain reaction and intercropping management, respectively. To quantify sor1 expression, seeds were sown in pots and RNA was collected from the roots at 5, 10, 15, 20 and 30 days after emergence (DAE). In the inhibition assay, cotton and three weeds were evaluated during single cropping and during intercropping with S. bicolor. The assay was completely randomized, with eight replications. We found early expression of sor1 in most S. bicolor accessions by 5 DAE, and a gradual reduction thereafter. Only one of the accessions showed sor1 expression up to 30 DAE. In the inhibition assay, the most significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allelopathy; Semiquantitative PCR; Sorgoleone; Weeds. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300008 |
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| Ribeiro,João Everthon da Silva; Barbosa,Ana Jéssica Soares; Lopes,Sérgio de Faria; Pereira,Walter Esfrain; Albuquerque,Manoel Bandeira de. |
| ABSTRACT Erythroxylum simonisis an understory species found in Northeast Brazil. Due to its shaded habitat,E. simonisis subjected to seasonal oscillations of the environment, to which it must respond ecophysiologically. The objective of this study was to evaluate the effects of seasonality on the ecophysiology ofE. simonis in a fragment of Seasonal Semideciduous Forest. Leaf area index, visible sky fraction and photosynthetically active radiation were measured for 10 individuals during the dry and rainy seasons. Soil moisture, temperature and monthly precipitation were measured, as well as photosynthetic rate, stomatal conductance, internal CO2concentration, transpiration, instantaneous water use efficiency, instantaneous carboxylation efficiency and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Responses; Photosynthetic rate; Seasonal changes; Seasonal Semideciduous Forest; Understory. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000200287 |
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