Consulta: creatorFacets:"Pedó,Tiago"
Registros recuperados: 3
Data/hora: 11/06/2024 11:05:03

Adaptability and stability of wheat genotypes according to the phenotypic index of seed vigor
Provedor de dados: 86
Autores: Szareski,Vinícius Jardel; Carvalho,Ivan Ricardo; Kehl,Kassiana; Levien,Alexandre Moscarelli; Nardino,Maicon; Dellagostin,Simone Morgan; Demari,Gustavo Henrique; Lautenchleger,Francine; Villela,Francisco Amaral; Pedó,Tiago; Souza,Velci Queiróz de; Aumonde,Tiago Zanatta.
Abstract: The objective of this work was to evaluate the adaptability and multi-trait stability of wheat (Triticum aestivum) genotypes according to the phenotypic index of seed vigor (PIV). Thirty wheat genotypes were grown in seven environments in the state of Rio Grande do Sul, Brazil, during one crop season. In each environment, a randomized complete block design with three replicates was used. The PIV was elaborated from the following traits: first germination count, germination percentage, accelerated aging, and electrical conductivity. The evaluated phenotypic index makes it possible to define macroenvironments for the production of wheat seeds with high physiological potential and to understand the implications of the genotype x environment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Accelerated aging; AMMI; Electrical conductivity; Mixed models; Seed quality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600727

Seed vigor, antioxidant metabolism and initial growth characteristics of red rice seedlings under different light intensities
Provedor de dados: 39
Autores: Aumonde,Tiago Zanatta; Pedó,Tiago; Borella,Junior; Amarante,Luciano do; Villela,Francisco Amaral.
This work aimed to evaluate the effect that different intensities of light have on the physiological attributes of red rice seeds and seedlings. Before and after emergence, seedlings were exposed to light levels of 35%; 65% and 100% in a greenhouse. We evaluated shoots and roots, in terms of length and dry mass, as well as leaf area and content of chlorophyll (a,b and total). In leaves and roots, we quantified the activity of superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) and guaiacol peroxidase (POX). We determined the leaf area ratio (F A), leaf mass ratio (F W), specific leaf area (S A), and shoot/root ratio (P W). At higher light intensities, shoot length decreased, whereas root length, dry mass and number of tillers increased....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; Shading; Chlorophyll content; Antioxidant enzymes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200007

Plant growth analysis and seed vigor expression: effects of soil waterlogging during rye plant development
Provedor de dados: 39
Autores: Pedó,Tiago; Martinazzo,Emanuela Garbin; Aumonde,Tiago Zanatta; Villela,Francisco Amaral.
This study aimed to evaluate the growth, assimilate partitioning and seed vigor expression of rye seeds subjected to waterlogging during development. The experimental design was completely randomized with six replications and three treatments. The treatments involved different waterlogging periods: a) no waterlogging; b) single waterlogging of three days; and c) two soil waterlogging periods of three days. The plants were collected at regular intervals of 14 days after emergence until the end of the growth cycle, measuring the dry matter accumulation and the leaf area for growth analysis and dry matter partition between the organs and number of flowers. The other calculated indices included the harvest index and relative seedling emergence rate originating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germination speed index; Net assimilation rates; Relative growth rates; Secale cereale L.; Stress.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100001