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OALib Journal期刊

ISSN: 2333-9721

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Aplica??o de análogo de brassinosteroide (Biobras 16?) sobre a germina??o e crescimento in vitro de embri?es zigóticos e aclimatiza??o de plantulas de bocaiuva
Borcioni, Elis;Negrelle, Raquel Rejane Bonato;
Ciência Rural , 2012, DOI: 10.1590/S0103-84782012000200014
Abstract: the results of an experimental research evaluating the in vitro growth of zygotic embryos and acclimatization of bocaiuva (acrocomia aculeata) grown under different concentrations (0.00, 0.001, 0.005, 0.01, 0.05, 0.1, 0.5 and 1mg. l-1) of a brassinosteroid analogue (biobras 16?) are presented. the objective was to determine whether the application of 16 biobras ? positively affects the germination of zygotic embryos of acrocomia aculeata and promotes the growth and development of seedlings and thereby affects the number of normal seedlings. the application of biobras 16? did not promote an increase in the percentage of germination but stimulated the formation of normal seedlings. the positive effect of biobras 16? was observed only in the first phase, not observed in other growth stages evaluated.
Produ??o e qualidade do óleo essencial de menta em hidroponia com doses de potássio
Garlet, Tanea Maria Bisognin;Santos, Osmar Souza dos;Medeiros, Sandro Luis Peter;Manfron, Paulo Augusto;Garcia, Danton Camacho;Borcioni, Elis;Fleig, Vinicius;
Ciência Rural , 2007, DOI: 10.1590/S0103-84782007000400006
Abstract: this research was aimed at evaluating the production of leaves' phytomass, the content and quality of mentha x gracilis sole essential oil with four potassium (k) levels (276, 414, 552 e 690mg l-1) under hydroponics, on "nft" system (nutrient film technique). a completely randomized design was used with five replications. stakes of matrix plants were rooted in phenolic foam for 20 days in a nursery, being then transferred to final production benches. harvesting occurred at 49 days after transplanting. leaves were separeted and weighted to determine fresch phytomass, and utilized for oil extraction in a clevenger apparatus. the analyses of oil chemical constitution were performed in gas chromatography connected to a mass spectrometer. the k concentrations affected leaves fresh phytomass, content and quality of the essential oil. the k level maximum showed increase of essential oil yield, but decreased the fresch phytomass accumulation, decreasing the oil yield by plant and linalool quantity, the main constituent of this chemotype. the k concentration suggested for the greatest yield of m. x gracilis, under hydroponics, doesn't surpass 276mg l-1 in nutritive solution.
Consumo de energia elétrica e produ??o de alface hidrop?nica com três intervalos entre irriga??es
Luz, Gean Lopes da;Medeiros, Sandro Luís Petter;Manfron, Paulo Augusto;Borcioni, Elis;Müller, Liziany;Amaral, Alan Dischkaln do;Morais, Katiule Pereira;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000300036
Abstract: the objective of this study was to evaluate irrigation intervals on the production of lettuce, cv. regina, in an nft hydroponic system. an experiment was carried out at the crop science department, federal university of santa maria, from may to june 2005. treatments were three irrigation intervals (15min, 30min, and 45min) after a 15 minutes irrigation. the experimental design was a complete randomized block design with three replications. leaf area, and above ground and total dry matter were measured at transplanting, and at 6, 9, 16, 20 and 23 days after transplanting. the treatment 45 minutes interval between successive irrigations allowed a 42,1% saving electric energy without decreasing lettuce yeld.
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