21 research outputs found
Age of the emerald mineralization from the Itabira-Nova Era District, Minas Gerais, Brazil, based on LA-ICP-MS geochronology of cogenetic titanite
Prevalência das dermatopatias não-tumorais em cães do município de Santa Maria, Rio Grande do Sul (2005-2008)
Atividade antifúngica do óleo essencial de Origanum vulgare frente a Malassezia pachydermatis
Componentes morfológicos e produção de forragem de pastagem de aveia e azevém manejada em diferentes alturas
Short communication: Relationship between natural antibodies and postpartum uterine health in dairy cows
Gas exchanges in peach palms as a function of the spad chlorophyll meter readings
The close relationship between the chlorophyll-meters readings and the total chlorophyll and nitrogen contents in leaves, has allowed their evaluation both in annual and perennial species. Besides, some physiological events such as the CO2 assimilation have also been estimated by chlorophyll meters. This work was carried out aiming to evaluate the gas exchanges of peach palms as a function of the chlorophyll SPAD-Meter readings. Three year-old peach palms from Yurimaguas, Peru were studied in Ubatuba, SP, Brazil, spaced 2 x 1 m in area under a natural gradient of organic matter which allowed four plots to be considered, according to the peach palms leaves colors, from light yellow to dark green. The SPAD readings and the stomatal frequency of leaflets were evaluated. The photosynthetic photon flux density (PPFD, μmol m-2 s-1), the leaf temperature (Tleaf, ºC), the CO2 assimilation (A, μmol m-2 s-1), the stomatal conductance (g s, mol m-2 s-1), the transpiration (E, mmol m-2 s-1) and the intercellular CO2 concentration (Ci, μmol mol-1) were evaluated with a portable infrared gas analyzer (LCA-4, ADC BioScientific Ltd., Great Amwell, U.K.). A linear increase in the CO2 assimilation as a function of the SPAD readings (y = -0.34 + 0.19x, R² = 0.99), indicates that they can be a rapid and cheap complementary method to evaluate in peach palms some important physiological events, such as CO2 assimilation
Leveduras isoladas do pelame de cães sadios que vivem em regime domiciliar
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)USP ICB Departamento de MicrobiologiaUNIFESP Departamento de Microbiologia, Imunologia e ParasitologiaUNIFESP, Depto. de Microbiologia, Imunologia e ParasitologiaSciEL