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Search Results: 1 - 10 of 3298 matches for " Silvana Manfredi Meirelles;Hemp "
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Reflexos da intera??o genótipo X ambiente e suas implica??es nos ganhos de sele??o em genótipos de feij?o (Phaseolus vulgaris L.)
Coimbra, Jefferson Luís Meirelles;Guidolin, Altamir Frederico;Carvalho, Fernando Irajá Felix de;Coimbra, Silvana Manfredi Meirelles;Hemp, Silmar;
Ciência Rural , 1999, DOI: 10.1590/S0103-84781999000300009
Abstract: the importance of grains of legume plants for human feeding, specially black beans (phaseolus vulgaris l.), has stimulated the breeders to select genotypes with high grains yield potential and wide adaptability to different conditions of cultivation in southern brazil. the present work aimed at evaluating the reflexes of the genotype x environment interaction and its implications in the genetic gains of different selection approaches. the results revealed that the component of the interaction between genotype and environment overestimates the prediction of genetic parameters such as genetic variance and heritability. differences among these estimates were observed apparently due to a high percentage of the complex part of the interaction. besides, the genetic gains obtained with the direct selection were always superior to the indirect response. comparatively, the pair of environments 1x3 revealed correlated response inferior and of opposite sign to the other estimates for the other pairs of environments studied. the first environment was the one which accumulated the higher interaction genotype by environment. it can be concluded that the interaction component has great relevance in the estimates of genetic gains, evidencing that this influence should be considered in the selection and in the recommendation of specific genotypes of bean breeding programs.
Análise de trilha. I: análise do rendimento de gr?os e seus componentes
Coimbra, Jefferson Luís Meirelles;Guidolin, Altamir Frederico;Carvalho, Fernando Irajá Felix de;Coimbra, Silvana Manfredi Meirelles;Marchioro, Volmir Sergio;
Ciência Rural , 1999, DOI: 10.1590/S0103-84781999000200005
Abstract: thirty two bean accesses (phaseolus vulgaris l.) were evaluated for the influence of eight characters of agronomic importance the production of grains for unit of area, in lages/sc. the experiment, in randomized blocks with four repetitions, was conducted during the period off-season in the agricultural year of 1996/97. this work aimed estimating the degree of association between grain yield and its secondary components. the first group of variables (primary) was constituted by the number of grains per pod, number of pods per plant, weight of a thousand grains and the population of plants (pop). the second group (secondary), was constituted by the number of days between emergence and flowering (fl), number of days between emergence and harvesting point (mc), plant stature (ep) and the height of first pod insertion (pil). for the analysis of the trail coefficient, the direct and indirect effects of primary characters nlp and pmg were characterized and evaluated, revealing the large direct effects associated with the high correlation. the nlp was highly influenced by plants of shorter cycle and higher stature. the trail coefficients allow to point out that the largest direct effects on the yield of grains nlp are mainly associated to pmg, ngl and cycle of the plant.
Adaptabilidade e estabilidade fenotípica em genótipos de feij?o de cor (Phaseolus vulgaris L.) em três ambientes distintos
Coimbra, Jefferson Luís Meirelles;de Carvalho, Fernando Irajá Felix;Hemp, Silmar;Silva, Simone Alves;
Ciência Rural , 1999, DOI: 10.1590/S0103-84781999000300010
Abstract: in the biennium 1996/97, twenty-one genotypes of colored bean were evaluated, in three environments, to identify and estimate adaptability parameters and phenotypic stability for grains yield. the experimental design was randomized blocks with three replications per treatment. the genotypes revealed highly significant differences among them, in all evaluated environments. in the analysis of joint variance, the genotype effects, environment and the interaction genotype x environments were highly significant, showing differences among genotypes x environment, and the existence of a differentiated behavior among genotypes according to enviromental variation. average grain yields varied from 1321kg.ha-1 to 801kg.ha-1, with on overall average of 1081kg.ha-1. most of the genotypes evidenced high phenotypic stability, specially lp 93-15, lp 93,2, lp 93-38 and rudá, which showed superior average yield compared to the overall yield average, general adaptability and predicted behavior in all the studied enviroments. among the genotypes with grain yield below the overall average an 9022180, lm 93204319, lr 91155315, pf 9029975, pf 9029984 and tb 94-05 presented general adaptability and high phenotipic stability in the environments evaluated.
Exigências Térmicas e Estimativa do Número de Gera??es de Argyrotaenia sphaleropa (Meyrick) (Lepidoptera: Tortricidae)
Neotropical Entomology , 2001, DOI: 10.1590/S1519-566X2001000400007
Abstract: argyrotaenia sphaleropa (meyrick) is often found attacking diospyros kaki fruits in southern region of brazil. duration and viability of the periods (eggs, larvae and pupae) and lifespan of the pest was studied under laboratory conditions in different temperatures. the experiment was conducted in climatic chambers under 60±10% rh and 14h photophase, at temperatures of 14, 18, 20, 22, 25, 28 and 30oc, using artificial diet. larval eclosion occurred in 5.9 to 25.4 days and larval period ranged from 13.9 to 91.1 days at 30 and 14oc, respectively. a variation of 6.4 (30oc) to 28.3 (14oc) and 26.5 (30oc) to 143.4 (14oc) days was observed for pupal phase and lifespan. eggs, larvae and pupae viability was always higher than 75% while the lower total viability was 64.8% at 18oc. for eggs, larvae, pupae and total cycle, the threshold temperature and thermal requirements were respectively 10.8, 10.9, 10.0 and 11.0oc and 104.3, 251.4, 114.9 and 473.3 degree days. for a. sphaleropa the occurrence of the 4.1 and 14.7 generations per year were estimated in the field and in the laboratory (30oc), respectively. temperatures of 14 and 18oc were less favorable for the insect development, with increase in time of development and decrease in survivorship.
Divergência genética em feij?o preto
Coimbra, Jefferson Luís Meirelles;Carvalho, Fernando Irajá Felix de;Hemp, Silmar;Oliveira, Ant?nio Costa de;Silva, Simone Alves da;
Ciência Rural , 1999, DOI: 10.1590/S0103-84781999000300008
Abstract: twenty bean genotypes (phaseolus vulgaris l.) were evaluated, in the county of lages/sc, brazil for the influence of three traits of agronomic importance on the genetic divergence in beans. this estimate was accomplished through the statistics of mahalanobis and, for grouping the most similar genotypes, the method of tocher. the experiment was performed with a randomized block design, with three replications and three sowing dates in both crop and out of season periods in the agricultural year of 1996/97. the analyzed agronomic traits were: number of days between emergency and flowering (emfl), number of days between emergency and harvesting point (emmc), weight of a thousand grains (pmg), and the yield of grains per unit of area. the results obtained allowed to identify possible genotypes to be used in driven crossings. the study of the twenty bean genotypes showed a high degree of genetic divergence and indicated the agronomic characters emfl and pmg as larger contributions to the genetic divergence, indicating, that these two characters should be prioritized in programs of bean improvement.
Performance Evaluation of Healthcare Monitoring System over Heterogeneous Wireless Networks  [PDF]
Sabato Manfredi
E-Health Telecommunication Systems and Networks (ETSN) , 2012, DOI: 10.4236/etsn.2012.13005
Abstract: The wide diffusion of healthcare monitoring systems allows continuous patient to be remotely monitored and diagnosed by doctors. The problem of congestion, namely due to the uncontrolled increase of traffic with respect to the network capacity, is one of the most common phenomena affecting the reliability of transmission of information in any network. The aim of the paper is to build a realistic simulation environment for healthcare system including some of the main vital signs model, wireless sensor and mesh network protocols implementation. The simulator environment is an efficient mean to analyze and evaluate in a realistic scenario the healthcare system performance in terms of reliability and efficiency.
Minera??o da intera??o genótipo x ambiente em Phaseolus vulgaris L. para o Estado de Santa Catarina
Coimbra, Jefferson Luís Meirelles;Bertoldo, Juliano Garcia;Elias, Haroldo Tavares;Hemp, Silmar;Vale, Naine Martins do;Toaldo, Diego;Rocha, Fabiani da;Barili, Leiri Daine;Garcia, Soraya Helena;Guidolin, Altamir Frederico;Kopp, Mauricio Marini;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782008005000069
Abstract: common bean genotypes (phaseolus vulgaris l.) belonging to the black group (evaluated in six environments) or to the 'carioca' group (evaluated in five environments) were tested for grain yield in the season of 2006/07, in the santa catarina state. the objective of this study was to evaluated the genotypic sensibility through predicted functions among the differences of the grain yield considering all the possible combinations among the studied environments. significance absence for all tested genotypes of the black group indicates an insensitive behavior of these genotypes relatively to the pair of environment chapecó vs. lages. on the other hand, the ponte serrada environment intensely affected all the predicted functions relatively to the other environments regardless of bean group (black or carioca), indicating that these genotypes should be recommended for cultivation in stratified environments.
Aspectos biológicos de Argyrotaenia sphaleropa (Meyrick 1909) (Lepidoptera: Tortricidae) em dietas artificiais com diferentes fontes proteicas
Manfredi-Coimbra, Silvana;Garcia, Mauro Silveira;Loeck, Alci Enimar;Botton, Marcos;Foresti, Josemar;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000200002
Abstract: biology aspects of argyrotaenia sphaleropa meyrick fed on artificial diets with different protein sources were studied: d1-white bean, wheat germ, soybean protein and casein; d2-common bean and yeast and d3-common bean, yeast and wheat germ, evaluating the duration and viability of all developmental stages (egg, larval, prepupa and pupa) and of the total cycle (egg-adult), sex ratio, pupa weight, fecundity, longevity and life table of fertility. tests were conducted in the laboratory at 25±1°c, 65±10% rh and 14h of photophase. duration of the egg stage was 6.6 days on all diets. the longest duration of larval and prepupal stages on d1 and pupal stages on d2, resulting in a longer duration of the total cycle on these two diets (30,9 and 30,8 days). the total viability was higher than 62% on all diets, and there was no statistical difference among the treatments. the number of instars was four or five on all treatments. the lowest fecundity was observed in d1. based on the fertility life table, d3 was the most suitable diet for rearing a. sphaleropa, due to the lowest development time (t), the highest finite increasing rate (l), and total viability exceeding 75%.
Danos do percevejo barriga-verde Dichelops melacanthus (Dallas) (Heteroptera: Pentatomidae) em trigo
Manfredi-Coimbra, Silvana;Silva, Jovenil José da;Chocorosqui, Viviane Ribeiro;Panizzi, Ant?nio Ricardo;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000600003
Abstract: the objective of this study was to evaluate the reaction of two cultivars of wheat to the damage caused by adults of the green belly stink bug, dichelops melacanthus (dallas), confined on the culture from the beginning of tillering. the effect of different infestation levels (0, 2, 4, 8 and 16 bugs m-2) on the number of tillers m-2, number of spikes m-2, weight of 1,000 seeds (g), and yield (kg ha-1) was evaluated on wheat cvs. ?br 18' and ?brs 193', in londrina, paraná state. the number of tillers m-2 increased linearly on ?br 18' and in a quadratic form on ?brs 193', with the increase of the number of bugs m-2; the number of spikes m-2, the weight of 1,000 seeds, and the yield decreased linearly with the increase of the infestation level on both cultivars. ?brs 193' was the most susceptible to the attack of d. melacanthus, showing a reduction of 254.4kg for each unit of increase in the number of bugs m-2.
Efeito de dietas artificiais para a alimenta??o de adultos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae), em laboratório
Fonseca, Fabiana Lazzerini da;Manfredi-Coimbra, Silvana;Foresti, Josemar;Kovaleski, Adalecio;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000600001
Abstract: adults of bonagota cranaodes (meyrick) (lepidoptera: tortricidae) were maintained in cages of transparent pvc without food, with water, and fed with honey solution at 10% and with honey solution at 10% + 25% of beer only with water and without feeding to evaluate their fecundity, longevity and viability of eggs in growth to (25±1°c and 70±10% of ru). the longevity of females and males was longer and number of eggs/female were obtained in the mean substratum composed of honey at 10% (17,75 days, 17,35 days and 14,07 eggs/posture) and honey at 10% + 25% of beer (18,25 days, 18,20 days and 12,71 eggs/posture). the viability of the eggs and the duration of the embryonic period was similar in all the treatments. the mean with honey at 10% + 25% of beer, presented effects similar to the mean composed with honey at 10% regarding to the longevity, fertility and viability of eggs of b. cranaodes. however, due to the lower cost, the diet based only in honey represents the best choice in laboratory for maintenance rearing of this insect.
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