43 research outputs found
Genetic variability and inheritance to aluminum tolerance in nutrient solution in triticale
Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab
This white paper summarizes the scientific opportunities for utilization of
the upgraded 12 GeV Continuous Electron Beam Accelerator Facility (CEBAF) and
associated experimental equipment at Jefferson Lab. It is based on the 52
proposals recommended for approval by the Jefferson Lab Program Advisory
Committee.The upgraded facility will enable a new experimental program with
substantial discovery potential to address important topics in nuclear,
hadronic, and electroweak physics.Comment: 64 page
Valoração econÎmica do efeito da erosão em sistemas de manejo do solo empregando o método custo de reposição
Analysis of the X(1835) and related baryonium states with Bethe-Salpeter equation
In this article, we study the mass spectrum of the baryon-antibaryon bound
states , , ,
, , ,
and with the Bethe-Salpeter
equation. The numerical results indicate that the ,
, , ,
, bound states maybe exist, and
the new resonances X(1835) and X(2370) can be tentatively identified as the
and (or ) bound states respectively
with some gluon constituents, and the new resonance X(2120) may be a
pseudoscalar glueball. On the other hand, the Regge trajectory favors
identifying the X(1835), X(2120) and X(2370) as the excited
mesons with the radial quantum numbers , 4 and 5, respectively.Comment: 13 pages, 2 figures, revise a numbe
Inheritance of resistance to bacterial spot in tomato
A herança da resistĂȘncia do tomateiro (Lycopersicon esculentum) Ă mancha-bacteriana (Xanthomonas campestris pv. vesicatoria, raça T2) foi estudada, em condiçÔes de campo, cruzando-se os genĂłtipos resistentes 'Ohio 8245' e 'Hawaii 7998' com os genĂłtipos suscetĂveis 'CNPH 401-08' e 'CNPH 416.81.01.02', em um esquema dialĂ©lico desconsiderando-se os recĂprocos. Foram obtidas cinco famĂlias, cada uma constituĂda por seis geraçÔes: Genitor1, Genitor2, F1, F2 e os retrocruzamentos (RC1 e RC2). A famĂlia 'Ohio 8245 ' Hawaii 7998' apresentou menor mĂ©dia para severidade da doença, seguida por 'Hawaii 7998 ' CNPH 416.81.01.02' e 'Ohio 8245 ' CNPH 416.81.01.02', as quais, apresentaram maiores estimativas de herdabilidade e de predição de ganho por seleção. Em todas combinaçÔes, a herança da resistĂȘncia genĂ©tica Ă mancha-bacteriana foi do tipo quantitativa, com estimativa do nĂșmero de genes variando de quatro a oito genes, conforme a famĂlia analisada. Foi observada segregação transgressiva nas famĂlias 'Ohio 8245 ' CNPH 401-08', 'Hawaii 7998 ' CNPH 401-08' e 'Hawaii 7998 ' CNPH 416.81.01.02'. Os efeitos gĂȘnicos foram do tipo aditivo para todas as famĂlias e os dados ajustados ao modelo aditivo-dominante, com o componente aditivo apresentando maior magnitude.The inheritance of resistance to bacterial spot (Xanthomonas campestris pv. vesicatoria, race T2) in tomato (Lycopersicon esculentum) was investigated in a field trial. The genotypes 'Ohio 8245' and 'Hawaii 7998' (resistant), 'CNPH 401-08' and 'CNPH 416.81.01.02' (susceptible) were crossed in a diallel scheme without reciprocals. Each cross was labeled as one family, represented by six different generations: Parent1, Parent2, F1, F2 and Backcrosses to parents (BC1 and BC2). The family 'Ohio 8245 ' Hawaii 7998' presented the lowest disease severity, followed by the family 'Hawaii 7998 ' CNPH 416.81.01.02' and by the family 'Ohio 8245 ' CNPH 416.81.01.02'. These last two families showed both higher broad and narrow sense inheritability estimates and the highest prediction of selection gain. The resistance was found to be quantitative, with four to eight genes involved, depending on the family. Transgressive segregation was observed in the 'Ohio 8245 ' CNPH 401-08', the 'Hawaii 7998 ' CNPH 401-08' and the 'Hawaii 7998 ' CNPH 416.81.01.02' families. The relevance of the additive effects was observed and for all the families the data fitted to additive-dominant model, with the additive component showing greater magnitude
Estudos ArtĂsticos
O nĂșmero 18 da revista Gama apresenta 16 artigos respondendo ao desafio a editorial lançado por esta revista. Trata-se de apresentar a obra de artistas contemporĂąneos ou mais antigos numa perspetiva de um resgate patrimonial, uma revisitação valorizadora do seu testemunho artĂstico.info:eu-repo/semantics/publishedVersio
NEOTROPICAL XENARTHRANS: a data set of occurrence of xenarthran species in the Neotropics
Xenarthrans â anteaters, sloths, and armadillos â have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with 24 domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, ten anteaters, and six sloths. Our dataset includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data-paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the south of the USA, Mexico, and Caribbean countries at the northern portion of the Neotropics, to its austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n=5,941), and Cyclopes sp. has the fewest (n=240). The armadillo species with the most data is Dasypus novemcinctus (n=11,588), and the least recorded for Calyptophractus retusus (n=33). With regards to sloth species, Bradypus variegatus has the most records (n=962), and Bradypus pygmaeus has the fewest (n=12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other datasets of Neotropical Series which will become available very soon (i.e. Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans dataset