Consulta: creatorFacets:"Pereira,Fabrício José"
Registros recuperados: 3
Data/hora: 09/06/2024 06:26:57

Leaf plasticity in successive selection cycles of 'Saracura' maize in response to periodic soil flooding
Provedor de dados: 86
Autores: Souza,Thiago Corrêa de; Magalhães,Paulo César; Pereira,Fabrício José; Castro,Evaristo Mauro de; Silva Junior,Jessé Marques da; Parentoni,Sidney Neto.
The objective of this work was to assess the effect of successive selection cycles on leaf plasticity of 'Saracura' maize BRS-4154 under periodical flooding in field conditions. Soil flooding started at the six-leaf stage with the application of a 20-cm depth water layer three times a week. At flowering, samples of leaves were collected and fixed. Paradermic and transverse sections were observed under photonic microscope. Several changes were observed throughout the selection cycles, such as modifications in the number and size of the stomata, higher amount of vascular bundles and the resulting decrease of the distance between them, smaller diameter of the metaxylem, decrease of cuticle and epidermis thickness, decrease of number and size of bulliform...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Hypoxia; Leaf anatomy; Tolerance to flooding.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000100003

Anatomia foliar e potencial hídrico na tolerância de cultivares de café ao estresse hídrico
Provedor de dados: 124
Autores: Batista,Luiz Antônio; Guimarães,Rubens José; Pereira,Fabrício José; Carvalho,Gladyston Rodrigues; Castro,Evaristo Mauro de.
A cultura do café é de expressiva importância no mercado internacional, com uma produção anual de cerca de 120 milhões de sacas beneficiadas e no Brasil, é responsável pela geração de mais de dez milhões de empregos diretos e indiretos. O estresse hídrico é um fator ambiental que pode ser extremamente prejudicial para a cultura do café, sendo que a seleção de cultivares tolerantes é de grande importância, principalmente diante da expansão da cafeicultura brasileira para áreas consideradas marginais para o cultivo do café por estarem sujeitos à deficiência hídrica. Nesse trabalho foram avaliadas 15 cultivares de Coffea arabica quanto ao status hídrico e às características da estrutura interna das folhas, verificando quais dessas cultivares são...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arábica; Plasticidade anatômica; Deficiência hídrica.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902010000300022

Anatomic and physiological modifications in seedlings of Coffea arabica cultivar Siriema under drought conditions
Provedor de dados: 64
Autores: Melo,Emanuelle Ferreira; Fernandes-Brum,Christiane Noronha; Pereira,Fabrício José; Castro,Evaristo Mauro de; Chalfun-Júnior,Antonio.
Due to the weather changes prognostic for the coming years, the understanding of water deficit and physiological responses of plants to drought becomes an important requirement in order to develop technologies such as mechanisms to assist plants to cope with longer drought periods, which will be essential to maintenance of Brazilian and worldwide production. This study aimed to evaluate ecophysiological and anatomical aspects as well as the nitrate reductase activity in Siriema coffee seedlings subjected to four treatments: Daily irrigated, non-irrigated, re-irrigated 24 hours and re-irrigated 48 hours after different stress periods. Non-irrigation promoted a reduction in leaf water potential being accented from the ninth day of evaluation onwards....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee tree; Ecophysiology; Water stress; Nitrate reductase.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100003