Consulta: subjectFacets:"Sexuality"
Registros recuperados: 3
Data/hora: 10/06/2024 06:30:08

Ecological setup, ploidy diversity, and reproductive biology of Paspalum modestum, a promising wetland forage grass from South America
Provedor de dados: Genetics and Molecular Biology
Autores: Karunarathne,Piyal; Feduzka,Cristian; Diego,Hojsgaard.
Abstract With ever-rising demand for food, forage breeding for intensification of cattle production is also taking a leap. In South America, cattle production systems are displaced to marginal areas poorly exploited with cultivated pastures yet with high potential for growing stocking rates. This places the need for using native genetic resources to breed locally adapted plant genotypes that benefits from better forage quality, yield, and lesser threat to the local biodiversity. Paspalum modestum Mez is a grass species that produces quality forage and grows in marginal areas like estuaries and floodplains, suitable for introduction in breeding programs. In this study we characterize the species' reproductive biology and ecological preferences needed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apomixis; Ecological niche; Plant breeding; Polyploidy; Sexuality.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000300304

A structuralist approach in the study of evolution and classification
Provedor de dados: Naturalis Digital Academic Repository
Autores: Hammen, L. van der.
A survey is given of structuralism as a method that can be applied in the study of evolution and classification. The results of a structuralist approach are illustrated by examples from the laws underlying numerical changes, from the laws underlying changes in the chelicerate life-cycle, and from the laws underlying the evolution of the chelicerate appendages. Suggestions are given for the study of the laws underlying the transformation of form, and some notes are made on structuring forces and the early stages of organic evolution. Some concluding remarks are finally made on deep structure, phylogenetic classification and evolution.
Tipo: Article / Letter to the editor
Palavras-chave: Appendages; Chelicerata; Classification; Evolution; Increasing complexity; Individual; Laws of form; Life-cycle; Numerical changes; Primordial life; Segmentation; Sexuality; Structuralism; 42.21; 42.70.
Ano: 1985
URL: http://www.repository.naturalis.nl/record/319130

Nuclear medicine procedures for the evaluation of male sexual organs: a brief review
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Bernardo-Filho,Mario; Santos-Filho,Sebastião David; Fonseca,Adenilson de Souza da; Carter,Kevin; Missailidis,Sotiris.
Sexuality consists of three aspects that are interrelated and inseparable, biological, physiological and social. The biological aspect considers the individual's capability to give and to receive pleasure. In consequence, it covers the functionality of the sexual organs and the physiology of human sexual response cycle. Diagnostic imaging modalities, such as single photon emission computed tomography (SPECT) and positron emission tomography (PET) have been used to evaluate clinical disorders of the male reproductive system. PET and SPECT procedures basically involve the administration of a radiopharmaceutical that has a higher uptake in a specific tumor or tissue. The aim of this brief review is to present some radiopharmaceuticals that have been used in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Male sexual organs; PET; SPECT; Radiopharmaceutical; Sexuality.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000700004