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Palavra-chave Vigna unguiculata (238) Feijão de corda (14) Feijão-caupi (14) Zea mays (13) Estresse salino (8) Bradyrhizobium (7) Caupi (7) Salinidade (7) Acre (6) Amazonia Occidental (6) Amazônia Ocidental (6) Cowpeas (6) Produtividade (6) Western Amazon (6) Feijão-de-corda (5) Germinação (5) Grain yield (5) Nodulação (5) Rendimento (5) Salt stress (5) Mais... Tipo do documento Info:eu-repo/semantics/article (198) Capítulo em livro técnico (INFOTECA-E) (15) Comunicado Técnico (INFOTECA-E) (5) Fôlder / Folheto / Cartilha (INFOTECA-E) (4) Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) (3) Info:eu-repo/semantics/other (2) Info:eu-repo/semantics/report (2) Séries anteriores (INFOTECA-E) (2) Circular Técnica (INFOTECA-E) (1) Conference Paper or Presentation (1) Mais... Ano 2023 (1) 2022 (1) 2020 (6) 2019 (10) 2018 (5) 2017 (35) 2016 (10) 2015 (10) 2014 (14) 2013 (12) 2012 (12) 2011 (20) 2010 (16) 2009 (15) 2008 (6) 2007 (8) 2006 (6) 2005 (7) 2004 (4) 2003 (12) Mais... País Brazil (234) Mexico (2) Colombia (1) United States (1) Idioma Português (159) Inglês (77) Espanhol (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 238 Primeira ... 4 5 6 7 8 9 10 11 12 ... Última Thrips species (Insecta: Thysanoptera) associated to Cowpea in Piauí, Brazil Biota Neotropica Lima,Élison Fabrício Bezerra; Fontes,Lúcia da Silva; Pinent,Silvia Marisa Jesien; Reis,Adriana Saraiva dos; Freire Filho,Francisco Rodrigues; Lopes,Angela Celis de Almeida. Thrips are still poorly known in cowpea, Vigna unguiculata (L.) Walp., in Piauí, despite their economic importance in this crop, which stands out as one of the major cultures of North and Northeast regions from Brazil. Thus, this study aimed to identify the thrips species associated to the crop in Teresina and Bom Jesus, Piauí, Brazil. From October 2007 to August 2008, cowpea inflorescences were sampled in the municipalities by the technique of simple bagging. After screenings, thrips were preserved in AGA, mounted on permanent microscope slides and identified. The identified species were: Frankliniella brevicaulis Hood, 1937, F. insularis (Franklin, 1908), F. schultzei (Trybom, 1910), F. tritici (Fitch, 1855) and Haplothrips gowdeyi (Franklin, 1908). The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pests; Phlaeothripidae; Thripidae; Frankliniella; Vigna unguiculata. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100043 Eficiência do uso da água das culturas do milho e do feijão-caupi sob sistemas de plantio exclusivo e consorciado no semiárido brasileiro Bragantia Souza,Luciana Sandra Bastos de; Moura,Magna Soelma Beserra de; Sediyama,Gilberto Chohaku; Silva,Thieres George Freire da. O objetivo deste trabalho foi analisar a resposta produtiva, a eficiência do uso de água e a viabilidade econômica de cultivos de milho e de feijão-caupi em sistemas de plantio exclusivo e consorciado na região semiárida do Nordeste brasileiro. O experimento foi desenvolvido no município de Petrolina (PE). As culturas, nos diferentes sistemas de plantio (exclusivo e consorciado), foram submetidas a cinco lâminas de irrigação, aplicadas logo após o pendoamento no milho e na fase de floração do feijão-caupi aos 40 dias depois da semeadura. Combinando as configurações de sistema de cultivo e as diferentes lâminas de irrigação, as culturas do milho e do feijão-caupi foram submetidas a 15 tratamentos distintos. Para avaliar o desempenho das culturas nos... Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Vigna unguiculata; Consórcio. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052011000300030 Contribuição da fixação biológica de nitrogênio, fertilizante nitrogenado e nitrogênio do solo no desenvolvimento de feijão e caupi Bragantia Brito,Marciano de Medeiros Pereira; Muraoka,Takashi; Silva,Edson Cabral da. A fixação biológica do nitrogênio (FBN) constitui-se em uma valiosa fonte deste nutriente para o feijão comum e, sobretudo, para o feijão-caupi, tendo sua magnitude influenciada pela disponibilidade de N mineral na solução do solo. Os objetivos deste trabalho foram: avaliar os efeitos de doses de nitrogênio, na forma de uréia, sobre a fixação simbiótica de N2 em feijão comum e caupi, pela técnica isotópica, e quantificar as contribuições relativas das fontes N2-fixação simbiótica, N-solo e N-uréia no desenvolvimento do feijão comum e caupi, usando como controle a soja não nodulante. O estudo foi desenvolvido em casa de vegetação, utilizando-se vasos com 5 kg de terra, coletada de Latossolo Vermelho-Amarelo distrófico. O delineamento experimental foi em... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Phaseolus vulgaris; 15N; Leguminosa; Dose de nitrogênio. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052011000100027 Desempenho agronômico e divergência genética entre genótipos de feijão-caupi cultivados no ecótono Cerrado/Pantanal Bragantia Santos,Jeferson Antônio da Silva; Teodoro,Paulo Eduardo; Correa,Agenor Martinho; Soares,Carla Medianeira Giroleta; Ribeiro,Larissa Pereira; Abreu,Hadassa Kathyuci Antunes de. Objetivou-se com este trabalho avaliar o desempenho agronômico e a divergência genética entre genótipos de feijão-caupi cultivados na região do ecótono Cerrado/Pantanal. O experimento foi conduzido no ano de 2008 na área experimental da Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Aquidauana (UEMS/UUA). Os tratamentos consistiram de 20 genótipos de feijão-caupi dispostos em delineamento de blocos casualizados com quatro repetições. Avaliaram-se os seguintes caracteres: início do florescimento, início de maturação, massa de cinco vagens, massa de grãos de cinco vagens, índice de grãos, massa de 100 grãos e produtividade de grãos. A divergência genética entre os tratamentos foi determinada com base na análise de agrupamento e nas... Tipo: Info:eu-repo/semantics/article Palavras-chave: Caracteres agronômicos; Dissimilaridade; Variabilidade genética; Vigna unguiculata. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000400005 Adaptability and stability of erect cowpea genotypes via REML/BLUP and GGE Biplot Bragantia Santos,Adriano dos; Ceccon,Gessi; Teodoro,Paulo Eduardo; Correa,Agenor Martinho; Alvarez,Rita de Cássia Félix; Silva,Juslei Figueiredo da; Alves,Valdecir Batista. ABSTRACT The objective of this study was to investigate the association between the GGE Biplot and REML/BLUP methods and select cowpea genotypes that meet simultaneously high grain yield, adaptability and stability in the Mato Grosso do Sul environments. The experiments were carried out from February to July 2010, 2011 and 2012 in the municipalities of Dourados, Aquidauana and Chapadão do Sul. The experiments in Chapadão do Sul were conducted only in the years of 2010 and 2011, totaling eight environments. After detecting significant genotypes × environments (GE) interaction, the adaptability and the phenotypic stability of cowpea genotypes were analyzed by GGE Biplot and REML/BLUP methods. These methods were concordant in the identification of the best... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Multivariate analysis; Mixed models; Genotypes × environments interaction. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000300299 Divergência genética em feijão-caupi Bragantia Passos,Adriana Rodrigues; Silva,Simone Alves; Cruz,Pedro Jacinto; Rocha,Maurisrael de Moura; Cruz,Elizangela Mércia de Oliveira; Rocha,Moema Angélica Chaves da; Bahia,Henrique Fortes; Saldanha,. Este trabalho objetivou avaliar a divergência genética entre genótipos de feijão-caupi, visando à seleção dos mais divergentes e de maior potencial produtivo para indicar como genitores em cruzamentos genéticos para futura recomendação de cultivares aos agricultores do Recôncavo Baiano. Os experimentos foram desenvolvidos na Escola de Agronomia da Universidade Federal da Bahia, Cruz das Almas (BA), utilizando-se 22 genótipos do tipo prostrado e 20 do tipo semi-ereto, dispostos em delineamento de blocos casualizados, com quatro repetições. Foram analisados os caracteres altura da planta, comprimento de vagem, massa de vagens, massa de grãos por vagem, número de grãos por vagem, massa de cem grãos, índice de grãos, produtividade de vagem e de grãos. A... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Dissimilaridade; Variabilidade genética; Seleção. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052007000400007 Physiological and toxic effects of selenium on seed germination of cowpea seedlings Bragantia Lapaz,Allan de Marcos; Santos,Luiz Felipe de Melo; Yoshida,Camila Hatsu Pereira; Heinrichs,Reges; Campos,Marcelo; Reis,André Rodrigues dos. ABSTRACT Selenium (Se) is considered a beneficial chemical element for plants, but in high concentrations it may present symptoms of toxicity. The present study aimed to evaluate 11 concentrations of Se (0; 0.1; 0.5; 1; 5; 10; 20; 40; 80; 400; 800 mg.L-1) to determine the low and high (toxicity) critical levels to seed germination of cowpea (Vigna unguiculata). In addition, alterations in the rate of photosynthetic pigments, lipid peroxidation and sugars during the initial growth development of seedlings were analysed. Seeds exposed to 800 mg.L-1 of Se showed a decrease of 20% of seed germination index compared to the control treatment. The decrease in seedling growth reflected in the increase of total sugars and sucrose concentration in both the shoot and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soluble sugars; Oxidative metabolism; Phytotoxicity; Vigna unguiculata. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000400498 New rhizobia strains isolated from the Amazon region fix atmospheric nitrogen in symbiosis with cowpea and increase its yield Bragantia Ferreira,Paulo Ademar Avelar; Pereira,João Paulo Andrade Rezende; Oliveira,Dâmiany Pádua; Vale,Helson Mário Martins do; Jesus,Ederson da Conceição; Soares,André Luís de Lima; Nogueira,Cláudia de Oliveira Gonçalves; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza. ABSTRACT Studies in the Amazon indicate a wide diversity of rhizobia with the ability for biological nitrogen fixation (BNF), which could expand the number of strains approved for cowpea. Thus, the aim of this field study was to evaluate the agronomic performance in cowpea of the several strains isolated from the soils of the Brazilian states Acre and Rondônia, and to compare them withstrains approved by the Ministry of Agriculture (MAPA) and withnon-inoculated controls (without and with mineral nitrogen fertilizer). The inoculants performed well. Though less effective than the other strains, the UFLA 03-36 strain also was prominent with respect to grain yield. Because of the positive response of the UFLA 03-129 strain, which led to yield increases greater... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Biological nitrogen fixation; Amazon strains; Seed inoculation. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100038 Reação de genótipos de feijão-caupi revela resistência às coinfecções pelo Cucumber mosaic virus, Cowpea aphid-borne mosaic virus e Cowpea severe mosaic virus Bragantia Oliveira,Cláudia Roberta Ribeiro de; Freire Filho,Francisco Rodrigues; Nogueira,Maria do Socorro da Rocha; Barros,Gislanne Brito; Eiras,Marcelo; Ribeiro,Valdenir Queiroz; Lopes,Ângela Celis de Almeida. O rendimento do feijão-caupi pode ser afetado por diversos fatores, em especial as viroses. As principais espécies de vírus que infectam o feijão-caupi, no Brasil, são: Cucumber mosaic virus (CMV), Cowpea aphid-borne mosaic virus (CABMV), Cowpea severe mosaic virus (CPSMV) e o Bean golden mosaic virus (BGMV). Este trabalho foi realizado em duas etapas e teve como objetivo avaliar a reação de genótipos de feijão-caupi quanto à resistência à infecção simples pelo CMV e mista nas combinações CMV+CABMV, CMV+CPSMV-I e CMV+CABMV+CPSMV-I. Inicialmente, foram incluídos 57 genótipos, sendo três avaliações em gaiolas com tela antiafídeos sob infecção controlada, e uma em condição de campo sob infecção natural. Em seguida, foram selecionados 18 genótipos para serem... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Resistência a vírus; Efeito sinérgico. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000100010 Effect of biologically treated petroleum sludge on seed germination and seedling growth of Vigna unguiculata (L.) Walp. (Fabaceae) BABT Sangeetha,Jeyabalan; Thangadurai,Devarajan. The present investigation was carried out to study the response of different concentrations of treated petroleum sludge on seed germination, root and shoot length and tolerance of Vigna unguiculata (L.) Walp. The biologically treated petroleum sludge with bacterial consortium showed 54.8% reduction in total petroleum hydrocarbons. Treated sludge was utilized with agricultural soil in known concentration for the assessment of growth of V. unguiculata. A remarkable absence of seed germination was observed at higher sludge concentration. The different concentrations of treated petroleum sludge showed severe decline on the length, weight and vigour index of the tested seedlings with increasing sludge concentrations. The results showed that the difference in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial consortium; Biodegradation; Petroleum sludge; Seed germination; Total petroleum hydrocarbon; Vigna unguiculata. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000300017 Cowpea Vicilins: Fractionation of Urea Denatured Sub-Units and Effects on Callosobruchus maculatus F. (Coleoptera: Bruchidae) Development BABT Mota,Antônio Chagas; Fernandes,Kátia Valevski Sales; Sales,Maurício Pereira; Flores,Victor Martin Quintana; Xavier-Filho,José. Vicilins (7S storage globulins) isolated from cowpea (Vigna unguiculata L.) seeds which were susceptible (S) and resistant (R) to the cowpea weevil (Callosobruchus maculatus F., Coleoptera: Bruchidae) were denatured by urea and fractionated by ion-exchange chromatography. Isolated fractions were incorporated in artificial seeds for assessment of their toxicity to C. maculatus. The most acidic fractions of both susceptible (CE-31 cultivar) and resistant (IT81D-1045 line) seeds were shown to affect development and survival of the bruchid. Results indicated that vicilin polypeptides of toxic nature were expressed in both types of storage globulins although at different levels. Tipo: Info:eu-repo/semantics/article Palavras-chave: Vicilins; 7S storage globulins; Urea denaturation; Cowpea; Vigna unguiculata; Callosobruchus maculatus; Development. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100001 A protein with amino acid sequence homology to bovine insulin is present in the legume Vigna unguiculata (cowpea) BJMBR Venâncio,T.M.; Oliveira,A.E.A.; Silva,L.B.; Machado,O.L.T.; Fernandes,K.V.S.; Xavier-Filho,J.. Since the discovery of bovine insulin in plants, much effort has been devoted to the characterization of these proteins and elucidation of their functions. We report here the isolation of a protein with similar molecular mass and same amino acid sequence to bovine insulin from developing fruits of cowpea (Vigna unguiculata) genotype Epace 10. Insulin was measured by ELISA using an anti-human insulin antibody and was detected both in empty pods and seed coats but not in the embryo. The highest concentrations (about 0.5 ng/µg of protein) of the protein were detected in seed coats at 16 and 18 days after pollination, and the values were 1.6 to 4.0 times higher than those found for isolated pods tested on any day. N-terminal amino acid sequencing of insulin... Tipo: Info:eu-repo/semantics/article Palavras-chave: Insulin; Insulin-like; Cowpea; Vigna unguiculata; Developing fruits; Sequence homology; Evolution. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000900004 Vicilins (7S storage globulins) of cowpea (Vigna unguiculata) seeds bind to chitinous structures of the midgut of Callosobruchus maculatus (Coleoptera: Bruchidae) larvae BJMBR Sales,M.P.; Pimenta,P.P.; Paes,N.S.; Grossi-de-Sá,M.F.; Xavier-Filho,J.. The presence of chitin in midgut structures of Callosobruchus maculatus larvae was shown by chemical and immunocytochemical methods. Detection by Western blotting of cowpea (Vigna unguiculata) seed vicilins (7S storage proteins) bound to these structures suggested that C. maculatus-susceptible vicilins presented less staining when compared to C. maculatus-resistant vicilins. Storage proteins present in the microvilli in the larval midgut of the bruchid were recognized by immunolabeling of vicilins in the appropriate sections with immunogold conjugates. These labeling sites coincided with the sites labeled by an anti-chitin antibody. These results, taken together with those previously published showing that the lower rates of hydrolysis of variant vicilins... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bruchid beetles; Callosobruchus maculatus; Cowpea seeds; Vigna unguiculata; Vicilins (7S storage proteins); Immunolocalization; Midgut. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000100003 WATER STRESS RESPONSE ON THE ENZYMATIC ACTIVITY IN COWPEA NODULES BJM Figueiredo,Márcia do Vale B.; Bezerra-Neto,Egídio; Burity,Hélio A.. A greenhouse experiment was carried out aiming to study the effect of water stress on metabolic activity of cowpea nodules at different plant development stages. Cowpea plants were grown in pots with yellow latosol soil under three different matric potentials treatments: -7.0 (control-S1), -70.0 (S2) and <-85.0 KPa (S3). The experimental design was randomized blocks with sub-divided plots, each plot containing a different degree of water stress, divided in sub-plots for the four different developmental stages: E1 (0-15), E2 (15-30), E3 (20-35) and E4 (30-45) days after emmergence. Water stress treatments were applied by monitoring soil water potential using a set of porous cups. The effect of water stress was most harmful to cowpea when it was applied... Tipo: Info:eu-repo/semantics/article Palavras-chave: Drought stress; Vigna unguiculata; Nodulins. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000300006 Genomic identification and characterization of the elite strains Bradyrhizobium yuanmingense BR 3267 and Bradyrhizobium pachyrhizi BR 3262 recommended for cowpea inoculation in Brazil BJM Leite,Jakson; Passos,Samuel Ribeiro; Simões-Araújo,Jean Luiz; Rumjanek,Norma Gouvêa; Xavier,Gustavo Ribeiro; Zilli,Jerri Édson. ABSTRACT The leguminous inoculation with nodule-inducing bacteria that perform biological nitrogen fixation is a good example of an “eco-friendly agricultural practice”. Bradyrhizobium strains BR 3267 and BR 3262 are recommended for cowpea (Vigna unguiculata) inoculation in Brazil and showed remarkable responses; nevertheless neither strain was characterized at species level, which is our goal in the present work using a polyphasic approach. The strains presented the typical phenotype of Bradyrhizobium with a slow growth and a white colony on yeast extract-mannitol medium. Strain BR 3267 was more versatile in its use of carbon sources compared to BR 3262. The fatty acid composition of BR 3267 was similar to the type strain of Bradyrhizobium yuanmingense;... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Rhizobia; MLSA; DDH; ANI. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400703 Physiological responses of NaCl stressed cowpea plants grown in nutrient solution supplemented with CaCl2 Braz. J. Plant Physiol. Silva,José Vieira; Lacerda,Claudivan Feitosa de; Costa,Paulo Henrique Alves da; Enéas Filho,Joaquim; Gomes Filho,Enéas; Prisco,José Tarquínio. Pitiuba cowpea (Vigna unguiculata (L.) Walp.) plants were grown in nutrient solution and kept in a greenhouse up to pre-flowering stage. They were subjected to four different treatments: nutrient solution; nutrient solution containing 75 mmol.L-1 NaCl; nutrient solution containing 75 mmol.L-1 NaCl and 5 mmol.L-1 CaCl2; and nutrient solution containing 75 mmol.L-1 NaCl and 10 mmol.L-1 CaCl2. Salt stress strongly inhibited plant growth, caused a disturbance in plant-water balance, and increased the total content of inorganic solutes in the different plant parts, due mainly to accumulation of Na+ and Cl-. It also increased leaf and root soluble carbohydrates, reduced soluble amino nitrogen both in root tips and in the youngest trifoliate leaves, and reduced... Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcium; Growth; Salt stress; Solutes accumulation; Vigna unguiculata; Water relations. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000200005 Salt-induced changes in antioxidative enzyme activities in root tissues do not account for the differential salt tolerance of two cowpea cultivars Braz. J. Plant Physiol. Maia,Josemir M; Voigt,Eduardo L; Macêdo,Cristiane E. C; Ferreira-Silva,Sérgio L; Silveira,Joaquim A. G. The salt stress effect in root growth and antioxidative response were investigated in two cowpea cultivars which differ in salt tolerance in terms of plant growth and leaf oxidative response. Four-day-old seedlings (establishment stage) were exposed to 100 mM NaCl for two days. The roots of the two cultivars presented distinct response in terms of salt-induced changes in elongation and dry weight. Root dry weight was only decreased in Pérola (sensitive) cultivar while root elongation was mainly hampered in Pitiúba (tolerant). Root relative water content remained unchanged under salinity, but root Na+ content achieved toxic levels as revealed by the K+/Na+ ratio in both cultivars. Then, root growth inhibition might be due to ionic toxicity rather than by... Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidative enzymes; Oxidative stress; Root growth inhibition; Salt stress; Vigna unguiculata. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000200005 Differential responses of ribulose-1,5-bisphosphate carboxylase/oxygenase activities of two Vigna unguiculata cultivars to salt stress Braz. J. Plant Physiol. Aragão,Maria Erivalda Farias de; Guedes,Marjorie Moreira; Otoch,Maria de Lourdes Oliveira; Guedes,Maria Izabel Florindo; Melo,Dirce Fernandes de; Lima,Maria da Guia Silva. Vita 3 and Vita 5 are two Vigna unguiculata cultivars that differ in their capacities for survival in saline environments; Vita 3 is more tolerant and Vita 5 more sensitive. Both cultivars were submitted to salt stress with 0.1 M NaCl. After 8 days, root and shoot growth from both cultivars was reduced but reduction was more pronounced in Vita 5. Furthermore, leaf area was also reduced in this cultivar. Chlorophyll content and chlorophyll fluorescence parameters were not affected by salt stress, but the specific activities of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) decreased in Vita 3 and increased in Vita 5. The use of immunological techniques also revealed that the Rubisco content from Vita 3 decreased while that of Vita 5 increased.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Rubisco; Photosynthesis; Salt stress; Vigna unguiculata. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000200003 Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants Braz. J. Plant Physiol. Guimarães,Francisco Valderez Augusto; Lacerda,Claudivan Feitosa de; Marques,Elton Camelo; Abreu,Carlos Eduardo Braga de; Aquino,Boanerges Freire de; Prisco,José Tarquinio; Gomes-Filho,Enéas. The growth and nutrient assimilation was evaluated in CaCl2- and CaSO4-supplemented cowpea plants subjected to salt stress (75 mM NaCl). The salinity significantly reduced the cowpea vegetative growth. The addition of CaCl2 in the growth medium did not significantly affect plant growth, while for the CaSO4, the beneficial effects of Ca2+ were moderate. Salinity increased the Na+, K+, Cl-, N and P content in the plants, however it decreased the content of Ca2+ and Mg2+. Increases in Ca2+ concentration in the nutrient solution caused decreases in the Na+ and Mg2+ contents and increases in Ca2+, K+, P, and Cl- contents. The supplemental Ca2+ may alleviate the Na+ toxicity and may improve nutritional and ionic balance in cowpea, but it cannot overcome the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcium; Mineral nutrition; Salinity; Vigna unguiculata. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000100003 Potencial produtivo de progênies de feijão-caupi com arquitetura ereta de planta Ciência Rural Matos Filho,Carlos Humberto Aires; Gomes,Regina Lucia Ferreira; Rocha,Maurisrael Moura; Freire Filho,Francisco Rodrigues; Lopes,Ângela Celis de Almeida. O objetivo foi estimarem-se parâmetros genéticos e identificarem-se, em populações de feijão-caupi, genótipos promissores quanto à produtividade de grãos e arquitetura ereta de planta. Três linhagens e 348 progênies de geração F3 e F2RC1, provenientes dos cruzamentos entre: TE96-282-22G (P1) x TVx5058-09C (P2) e TE96-282-22G (P1) x 1T81D-1332 (P3), foram avaliadas no Município de Teresina, PI, em 2004. A variabilidade genética apresentada para o comprimento e número de nós do ramo principal e para o número de vagens por planta indica condição favorável à seleção de progênies superiores quanto a esses caracteres. As populações que se destacaram quanto à produtividade de grãos, encontram-se entre as de maior comprimento e número de nós do ramo principal. A... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Ideótipo; Herdabilidade; Correlação genética. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000200006 Registros recuperados: 238 Primeira ... 4 5 6 7 8 9 10 11 12 ... Última

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