19 documents found, page 1 of 2
Effect of water stress on seedling growth in two species with different abundan...
Ferreira, Wanessa Nepomuceno; Lacerda, Claudivan Feitosa de; Costa, Rafael Carvalho da; Medeiros Filho, SebastiãoIn seasonally dry tropical forests, species carrying attributes of Stress Resistance Syndrome (SRS) may have ecological advantages over species demanding high quantities of resources. In such forests, Poincianella bracteosa is abundant, while Libidibia ferrea has low abundance; therefore, we hypothesized that P. bracteosa has characteristics of low- -resource species, while L. ferrea has characteristics of high...
Comunidade Halofítica Herbáceo-arbustiva em Perímetro Irrigado do Município de ...
Bonilla, Oriel Herrera; Dias, Francisco Yago Elias de Castro; Lucena, Eliseu Marlônio Pereira de; Lacerda, Claudivan Feitosa deSalinization of soils is a problem that occurs when there is an excess of salts in the soil solution, affecting livestock and agriculture, causing economic and environmental damages. The objective of this work was to evaluate plant communities present in salinized areas of the irrigated perimeter Curu-Recuperação, in Pentecoste-CE. Five collections were carried out in two perimeter areas, in three seasons of th...
Physiological responses of watercress to brackish waters and different nutrient...
Souza, Camila Alves de; Silva, Alexsandro Oliveira da; Lacerda, Claudivan Feitosa de; Silva, Ênio Farias de França e; Bezerra, Marlos AlvesWater scarcity and the use of brackish water are the main challenges for agricultural development. In view of this, the present study proposes to examine physiological responses of the broadleaf-cress crop in an NFT hydroponics system according to the use of brackish water and nutrient solution circulation times. The treatments were distributed in a randomized block design with five water salinity levels (ECw: ...
Water salinity and nitrogen fertilization in the production and quality of guav...
Bezerra, Idelfonso Leandro; Gheyi, Hans Raj; Nobre, Reginaldo Gomes; Lima, Geovani Soares de; Lacerda, Claudivan Feitosa deUsing nitrogen (N) to increase plant tolerance to salinity has been tested in many species. However, in addition to controversial results, most studies are conducted with annual species and/or in the initial growth stage and there are almost no studies with perennial fruit crops in the production stage. Thus, this study aimed to evaluate the production components and post-harvest quality of ‘Paluma’ guava irrig...
Colonização micorrízica e nodulação radicular em mudas de sabiá (Mimosa caesalp...
Tavares, Rodrigo Castro; Mendes Filho, Paulo Furtado; Lacerda, Claudivan Feitosa de; Silva, JoednaO sabiá (Mimosa caesalpiniaefolia Benth.) é uma espécie vegetal nativa do nordeste brasileiro e reúne algumas características fundamentais para compor programas de reabilitação de áreas salinizadas, principalmente quanto associado aos fungos micorrízicos arbusculares (FMAs) e a bactérias fixadoras de nitrogênio (BFN). O objetivo do presente estudo foi avaliar a colonização micorrízica e a nodulação radicular de...
Solute accumulation and distribution during shoot and leaf development in two s...
Cambraia, José; Lacerda, Claudivan Feitosa de; Oliva, Marco Antonio; Ruiz, Hugo Alberto; Prisco, José Tarquı́nioSeedlings of two forage sorghum genotypes (Sorghum bicolor (L.) Moench) differing in salt tolerance were subjected to 0 and 100 mM NaCl and shoot development, leaf elongation, and organic and inorganic solutes contents in leaves were measured. Salt stress reduced both shoot development and leaf elongation and enhanced leaf senescence and injury. It also led to accumulation of toxic ions (Na+ and Cl−), organic s...
Fluxo de biomassa em capim- massai durante o estabelecimento e rebrotação com e...
Lopes, Marcos Neves; Cândido, Magno José Duarte; Pompeu, Roberto Cláudio Fernandes Franco; Silva, Rodrigo Gregório da; Lopes, José Wellington BatistaA produção de biomassa em uma pastagem pode ser incrementada com o uso de fertilizantes, principalmente os nitrogenados. Diante disso, objetivou-se, com este trabalho, avaliar o fluxo de biomassa do capim-massai, durante o estabelecimento e a rebrotação, em casa de vegetação, sob cinco doses de nitrogênio (0; 150; 300; 450 e 600 mg de N dm^-3 de solo), em delineamento inteiramente casualizado, com medidas repet...
Growth and photosynthetic parameters of saccharine sorghum plants subjected to ...
Silva, Maria Liliane dos Santos; Sousa, Humberto Gildo de; Silva, Maria Lílian dos Santos; Lacerda, Claudivan Feitosa de; Gomes-Filho, EnéasPlants are often exposed to abiotic stresses such as salinity, which represents a barrier to the cultivation of agricultural species mainly in arid and semi-arid regions. This study evaluated the development of four saccharine sorghum genotypes for tolerance to different salinity levels under greenhouse conditions. The experimental design was a randomized complete block arranged in a 5 × 4 factorial scheme, whi...
Desenvolvimento do milho sob influência de árvores de pau-branco em sistema agr...
Oliveira, Teógenes Senna de; Mendes, Marlete Moreira de Sousa; Lacerda, Claudivan Feitosa de; Cavalcante, Ana Clara RodriguesO objetivo deste trabalho foi avaliar o efeito das árvores de pau-branco (Cordia oncocalyx) sobre parâmetros fisiológicos, altura e biomassa do milho, em diferentes distâncias das árvores, em sistema agrossilvipastoril. Utilizou-se o delineamento experimental de blocos ao acaso, com quatro tratamentos (distâncias do caule das árvores de 1, 2, 3 e 4 m), além do controle (plantas do cultivo tradicional), e cinco ...
Salt tolerance is unrelated to carbohydrate metabolism in cowpea cultivars
Praxedes, Sidney Carlos; Lacerda, Claudivan Feitosa de; Ferreira, Thalita Montoril; Prisco, José Tarquinio; DaMatta, Fábio Murilo; Gomes-Filho, EnéasUnder salinity stress, plants commonly accumulate carbohydrates for osmotic adjustment to balance the excess accumulated ions and to protect biomolecules. We selected two cowpea cultivars with contrasting response to salinity, Pitiúba (salt-tolerant) and TVu (salt-sensitive), to investigate whether the salt tolerance could be associated with changes in carbohydrate accumulation and metabolism in leaves and root...