Consulta: subjectFacets:"Seedlings"
Registros recuperados: 49
Data/hora: 16/06/2024 10:51:37

Elaboración artesanal de dos abonos líquidos fermentados y su efectividad en la producción de plántulas de chile habanero (Capsicum chinense Jacq).
Provedor de dados: 32
Autores: Salaya Domínguez, Jotam.
Con el objetivo de evaluar el efecto de dos abonos líquidos fermentados elaborados de subproductos regionales, en la producción de plántulas de chile habanero (Capsicum chinense Jacq), en la fase de vivero; se estableció el experimento en un predio del poblado C-34, Plan Chontalpa, Huimanguillo, Tabasco. Para la obtención de los abonos líquidos fermentados se utilizó el biodigestor tipo estacionario o Batch, a los cuales se les hizo las adecuaciones en la tapa que funcionó como válvula de escape, para la liberación de los gases generados durante la fermentación. Se utilizaron dos abonos, uno con biomasa de estiércol fresco de bovino (Biol Eb) y otro con follaje fresco de Gliricidia sepium (Jacq) (Biol Gs). Se realizaron tres repeticiones para determinar el...
Palavras-chave: Biodigestor; Biomasa; Efluentes; Biol; Plántulas; Biomass; Waste; Seedlings; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010
URL: http://hdl.handle.net/10521/235

Paja de trigo como sustrato en el crecimiento de plántulas de brócoli.
Provedor de dados: 32
Autores: Díaz Serrano, Fidel René.
Con el objetivo de utilizar la paja de trigo como sustrato en el crecimiento de plántulas de brócoli se hicieron varios experimentos. En el primero se evaluaron 3 sustratos de paja de trigo con extracción de fenólicos con agua común. Las plántulas de brócoli presentaron porcentajes de inhibición entre 54.92 y 57.40 % en la parte aérea y entre 38.31 y 44.78 % en raíces con respecto al testigo. En el segundo se identificaron por cromatografía de capa fina y se cuantificaron por cromatografía líquida de alta resolución los ácidos p-cumárico y ferúlico como probables compuestos inhibidores del crecimiento. Los porcentajes de recuperación de estos ácidos fueron muy bajos con respecto a la concentración de fenólicos solubles totales (CFST) cuantificados por...
Palavras-chave: Paja de trigo; Sustratos; Fenólicos; Plántulas; Brócoli; Wheat straw; Substrates; Phenolics; Seedlings; Broccoli; Doctorado; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/497

Elaboración artesanal de dos abonos líquidos fermentados y su efectividad en la producción de plántulas de chile habanero (Capsicum chinense Jacq).
Provedor de dados: 32
Autores: Salaya Domínguez, Jotam.
Con el objetivo de evaluar el efecto de dos abonos líquidos fermentados elaborados de subproductos regionales, en la producción de plántulas de chile habanero (Capsicum chinense Jacq), en la fase de vivero; se estableció el experimento en un predio del poblado C-34, Plan Chontalpa, Huimanguillo, Tabasco. Para la obtención de los abonos líquidos fermentados se utilizó el biodigestor tipo estacionario o Batch, a los cuales se les hizo las adecuaciones en la tapa que funcionó como válvula de escape, para la liberación de los gases generados durante la fermentación. Se utilizaron dos abonos, uno con biomasa de estiércol fresco de bovino (Biol Eb) y otro con follaje fresco de Gliricidia sepium (Jacq) (Biol Gs). Se realizaron tres repeticiones para determinar el...
Palavras-chave: Biodigestor; Biomasa; Efluentes; Biol; Plántulas; Biomass; Waste; Seedlings; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010
URL: http://hdl.handle.net/10521/235

Paja de trigo como sustrato en el crecimiento de plántulas de brócoli.
Provedor de dados: 32
Autores: Díaz Serrano, Fidel René.
Con el objetivo de utilizar la paja de trigo como sustrato en el crecimiento de plántulas de brócoli se hicieron varios experimentos. En el primero se evaluaron 3 sustratos de paja de trigo con extracción de fenólicos con agua común. Las plántulas de brócoli presentaron porcentajes de inhibición entre 54.92 y 57.40 % en la parte aérea y entre 38.31 y 44.78 % en raíces con respecto al testigo. En el segundo se identificaron por cromatografía de capa fina y se cuantificaron por cromatografía líquida de alta resolución los ácidos p-cumárico y ferúlico como probables compuestos inhibidores del crecimiento. Los porcentajes de recuperación de estos ácidos fueron muy bajos con respecto a la concentración de fenólicos solubles totales (CFST) cuantificados por...
Palavras-chave: Paja de trigo; Sustratos; Fenólicos; Plántulas; Brócoli; Wheat straw; Substrates; Phenolics; Seedlings; Broccoli; Doctorado; Edafología.
Ano: 2011
URL: http://hdl.handle.net/10521/497

INFRARED THERMOGRAPHY FOR DETERMINING TRAY TEMPERATURE IN LETTUCE PRODUCTION
Provedor de dados: 70
Autores: Cavalcanti,Sávio D. L.; Pandorfi,Héliton; Guiselini,Cristiane; Menezes,Dimas; Neto,Luiz A. de A.
ABSTRACT This research was carried out in Recife, PE, Brazil, and aimed to assess the variation of the surface temperature of trays and substrate in the production of lettuce seedlings and its influence on the final product. Trays consisted of expanded polystyrene, conventional polyvinyl chloride, polyvinyl chloride painted white, and polyvinyl chloride painted gray. Two cultivars (Solaris and Vanda) were used to register crop biometric variables from seedling stage to the final product (46 days). Tray and substrate temperatures were recorded by means of an infrared thermal imager. The experimental design was a completely randomized design in a 4 × 2 factorial scheme with three replications. The conventional polyvinyl chloride tray presented the highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ambience; Protected cultivation; Lactuca sativa L.; Seedlings.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100041

Germination and early growth of physic nut submitted to levels of salinity
Provedor de dados: 70
Autores: Lima,Luiz A.; Almeida,Willian F. de; Lima,Pedro L. T.; Oliveira,Eduardo C.; Shock,Clinton C.
Two experiments were conducted to evaluate the effect of salinity on early physic nut plant development. In the first trial, physic nut seeds were exposed to seven levels of salinity (0, 2, 4, 6, 8, 10 and 12dS m-1) with eight repetitions, using a substrate of paper soaked with solutions of CaCl2 and KCl. The treatments were evaluated based on the initial germination, total percentage of germination, and time necessary to germination of 50% of the seeds. Increased salinity reduced the first germination count and delayed the time to 50% germination. From 10dS m-1, there was a reduction in germination percentage. The second trial evaluated the effect of salinity on the growth of physic nut seeds. This trial, carried out inside a greenhouse, with a completely...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jatropha curcas L.; Seeds; Seedlings; Greenhouse.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600004

Volume of cells on trays influences hydroponic lettuce production
Provedor de dados: 75
Autores: Lima,Tiago JL; Gazaffi,Rodrigo; Ceccherini,Guilherme J; Marchi,Luana; Martinez,Marcela; Ferreira,Camila G; Sala,Fernando C.
ABSTRACT Lettuce seedlings used on hydroponic cultivation (NFT) are usually produced in trays with small volume, requiring two transplants: from tray to nursery and then to the definitive place. The aim of this study was to verify lettuce performance under NFT system, using seedlings produced in trays with several cell volumes (50, 40, 35, 31, 30, 29, 27, 20 and 10 cm³ cell-1). The tray volumes are considered treatments. The experimental design was completely randomized blocks, with four replicates. Seedlings were transplanted directly to the definitive profile, except those ones produced in 10 cm³ cell-1. Two harvests were performed, at 22 and 29 days after transplant (DAT). We evaluated number of senescent leaves, total number of leaves, shoot fresh...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactuca sativa; Seedlings; Tray; Soilless cultivation; Hidroponic.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300408

Curso intensivo de viveiros e produção de mudas.
Provedor de dados: 14
Autores: WENDLING, I.; FERRARI, M. P.; GROSSI, F.
bitstream/item/17087/1/doc79.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Propagação.; Muda; Propagação Vegetativa; Viveiro Florestal.; Plant nurseries; Seedlings; Vegetative propagation.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/306458

Exploração de caupi em área de varzea do Amapá: informações técnicas.
Provedor de dados: 14
Autores: CAVALCANTE, E. da S.; PINHEIRO, I. de N.
Neste trabalho são descritas de modo suscinto, algumas práticas que, se seguidas pelo agricultor, em muito contribuirão para que se obtenha sucesso na exploração de feijão caupi em área de várzea do Amapá.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Caupi; Pests of plants; Plant diseases.; Adubação; Colheita; Doença de Planta; Feijão de Corda; Praga de Planta; Semeadura; Variedade; Vigna Unguiculata.; Fertilizers; Beans; Harvesting; Seedlings; Varieties.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/345876

Cultivo do umbuzeiro.
Provedor de dados: 14
Autores: ARAUJO, F. P. de; SANTOS, C. A. F.; CAVALCANTI, N. de B.
Informações para o cultivo do umbuzeiro; Preparo e mudas; Substrato e recipiente usado na repicagem; Processo de enxertia; Preparo do solo; Tratos culturais; Colheita, rendimento e comercialização; Aproveitamento do umbuzeiro.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cultivo; Enxertia; Comercializacação; Nordeste; Região semi-árida; Cultivation; Grafting; Harvest; Northeast; Natural resource.; Recurso natural; Umbu; Caatinga; Colheita; Muda; Rendimento; Spondias Tuberosa.; Trade; Seedlings; Yields.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133956

Importancia da micorriza na producao de mudas em viveiros.
Provedor de dados: 14
Autores: MIRANDA, J. C. C. de; MIRANDA L. N. de.
bitstream/item/121722/1/gtec-45.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Micorrhizae; Cuttings; Fungus; Planting stock; Plants; Production.; Cerrado; Fungo; Micorriza; Muda; Planta; Produção; Raiz; Solo; Viveiro.; Plant nurseries; Soil.; Roots; Seedlings.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/545884

O Cultivo do mamão.
Provedor de dados: 14
Autores: SANCHES, N. F.; DANTAS, J. L. L.
Para o cultivo do mamoeiro e recomendado um conjunto de técnicas que viabiliza a exploração comercial desta cultura, contendo informações sobre programação e plantio, adubação, tratos culturais, controle de pragas e doenças, métodos de colheita e pós-colheita, formas de utilização, bem como os coeficientes técnicos e custo de produção para implantação da cultura.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Carica papaya L; Cultivo; Variedades; Sunrise Solo; Fomosa; Condições edafoclimáticas; Mudas; Sementes; Plantas daninhas; Desbate; Desbrota; Culturas intercalares; Pragas; Doencas; Frigoconservacao; Ultilizacao; Papaya; Cultivation; Sunrise; Formosa; Leal analysis; Edaphic and climatic; Conditions; Spacing; Thinning; Diseases; Preservation; Ultilization.; Calagem; Boro; Análise Foliar; Comercialização; Espaçamento; Mamão; Solo.; Boron; Marketing; Intercropping; Liming; Pests; Production costs; Seedlings; Seeds; Sprouting; Varieties; Weeds.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/642741

Morfologia de sementes, plantulas jovens de Enterolobium gummiferum (Mart.) acb. (Leguminosae).
Provedor de dados: 14
Autores: ROCHA, H. M. de C.; SOUSA-SILVA, J. C.
bitstream/CPAC-2009/24166/1/p2002_53.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Plantulas; Enterolobium gummiferum; Tamboril do campo.; Cerrado; Morfologia Vegetal; Planta Tóxica; Semente.; Plant anatomy; Phytotoxicity; Seedlings; Seeds.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567475

Cultura do meloeiro em região tropical chuvosa.
Provedor de dados: 14
Autores: CHENG, S. S.; CHU, E. Y.
bitstream/item/34530/1/ORIENTAL-CirTec6.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Cultivo; Produção de muda; Cultivation.; Colheita; Clima; Custo de Produção; Melão; Plantio; Produtividade; Solo.; Harvesting; Climate; Melons; Planting; Production costs; Seedlings; Soil; Yields.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/377487

Morfologia de frutos, sementes, plantulas e plantas jovens de Plathymenia reticulata Benth. (Leguminosae).
Provedor de dados: 14
Autores: ROCHA, H. M. de C.; SOUSA-SILVA, J. C.
bitstream/CPAC-2009/24165/1/p2002_52.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Plathymenia reticulata; Fruit.; Cerrado; Fruto; Morfologia Vegetal; Plântula; Semente.; Plant anatomy; Seedlings; Seeds.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567474

Coleta de sementes, producao de mudas e plantio de especies frutiferas nativas dos cerrados: informacoes exploratorias.
Provedor de dados: 14
Autores: SILVA, J. A. da; SILVA, D. B. da; JUNQUEIRA, N. T. V.; ANDRADE, L. R. M. de.
bitstream/item/107021/1/doc-44.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Fruta nativa; Cuttings; Production; Indigenous organisms; Seed; Fence; Native fruit; Plantation; Produção de muda; Produção de semente.; Cerrado; Época de Plantio; Manejo; Muda; Produção; Plantio; Semente; Viveiro.; Fruits; Savannas; Sowing.; Seedlings.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/548655

Emergência de plântulas de cupuaçuzeiro oriundas de sementes submetidas a estresses térmicos.
Provedor de dados: 14
Autores: FIGUEIRÊDO, F. J. C.; ROCHA NETO, O. G. da; CARVALHO, C. J. R. de.
bitstream/item/32812/1/CPATU-BP202.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Germinacao de semente; Efeito da temperatura; Efeito da umidade; Teobroma grandiflorum; Belem; Pará; Brasil; Plants; Emergence; Seed; Therapy.; Cupuaçu; Emergência; Plântula; Planta; Tratamento.; Amazonia; Germination; Humidity; Temperature.; Seedlings.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376727

Efeitos da inoculação com fungos micorrízicos arbusculares e adubação fosfatada em mudas de freijó.
Provedor de dados: 14
Autores: CHU, E. Y.; MAKI, H. J.-I. O.; MATOS, A. de O.
bitstream/item/52973/1/PesquisaAnd030001.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Freijó; Adubação fosfatada; Formação de muda; Belém; Pará; Brasil; Phosphate fertilizers.; Cordia Goeldiana; Fungo; Inoculação Artificial; Micorriza Vesicular Arbuscular.; Amazonia; Fungi; Inoculation methods; Seedlings; Vesicular arbuscular mycorrhizae.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376988

Utilização do RAPD para identificar plântulas em sementes poliembriônicas de mangueira para a formação de porta-enxertos.
Provedor de dados: 14
Autores: CORDEIRO, M. C. R.; PINTO, A. C. Q.; RAMOS, V. H. V.; FRAGA, L. M. S.; LOPES, G. K B.; DIAS, J. N.
bitstream/CPAC-2009/25303/1/p2004_28.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: RAPD; Mango; Identification; Grafting.; Enxerto; Identificação; Mangifera Indica; Marcador Molecular; Manga; Marcador Genético; Plântula; Semente.; Genetic markers; Seeds.; Seedlings.
Ano: 2005
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568302

Notes on Malesian Fabaceae (Leguminosae–Papilionoideae). 11. The genus Derris
Provedor de dados: 16
Autores: Adema, F.
Derris Lour. is revised for the Flora Malesiana region. In the introduction comments are given on some characters and the seedlings of D. trifoliata Lour. are described. The introduction is followed by a section ‘Notes on species’ in which the varieties of D. elegans Graham ex Benth. are described, including a new one from Celebes (var. celebica Adema) and a new one from Malaysia, Java, Borneo, the Philippines and the Moluccas (var. korthalsiana (Blume ex Miq.) Adema). Several other species are discussed at some length. A key to the species of Derris in Malesia is presented. The paper concludes with notes on aberrant specimens and excluded species.
Tipo: Article / Letter to the editor
Palavras-chave: Derris; Malesia; New varieties; Seedlings.
Ano: 2003
URL: http://www.repository.naturalis.nl/record/526182

Efeito da assepsia superficial na germinação e incidência de fungos em sementes de espécies florestais
Provedor de dados: 190
Autores: Garrido Pinheiro, Carlos; Lazarotto, Marília; Brião Muniz, Marlove Fatima; Gouvêa Redin, Cristina; Velho dos Santos, Mateus.
O objetivo deste estudo foi testar tratamentos de assepsia e sua influência na germinação e sanidade de sementes de quatro espécies florestais: Bauhinia forficata, Cedrela fissilis, Parapiptadenia rigida e Senegalia bonariensis. As sementes foram submetidas aos seguintes tratamentos: controle (T0); NaClO 1% por 3 min (T1); NaClO 2% por 1 min + 1 enxágue com água destilada (T2); álcool 70% por 1 min + triplo enxágue em água destilada + NaClO 0,5% por 1 min + triplo enxágue com água destilada (T3); Lysoform® por 1 min (T4); e álcool 70% por 1 min + NaClO 1% por 1 min + 1 enxágue com água destilada por 1 min (T5). Após, as sementes foram submetidas ao teste de germinação, sendo registrado comprimento, massa fresca e massa seca de plântulas, e teste de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Recursos Florestais; Silvicultura; Sementes Florestais; Patologia de Sementes Semente florestal; Sanidade florestal; Plântulas Forest seed; Forest health; Seedlings.
Ano: 2016
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1234

Agrobacterium-mediated genetic transformation of 'Hamlin' sweet orange
Provedor de dados: 86
Autores: Mendes,Beatriz Madalena Januzzi; Boscariol,Raquel Luciana; Mourão Filho,Francisco de Assis Alves; Almeida,Weliton Antonio Bastos de.
The development and optimization of efficient transformation protocols is essential in new citrus breeding programs, not only for rootstock, but also for scion improvement. Transgenic 'Hamlin' sweet orange (Citrus sinensis (L.) Osbeck) plants were obtained by Agrobacterium tumefaciens-mediated transformation of epicotyl segments collected from seedlings germinated in vitro. Factors influencing genetic transformation efficiency were evaluated including seedling incubation conditions, time of inoculation with Agrobacterium and co-culture conditions. Epicotyl segments were adequate explants for transformation, regenerating plants by direct organogenesis. Higher percentage of transformation was obtained with explants collected from seedlings germinated in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Epicotyls; Seedlings; Transgenics; Breeding methods.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000700009

Efeitos da seca sazonal e disponibilidade de luz na sobrevivência e crescimento de Bowdichia virgilioides em duas fitofisionomias típicas dos cerrados do Brasil Central
Provedor de dados: 88
Autores: KANEGAE,MIEKO F.; BRAZ,VÍVIAN DA S.; FRANCO,AUGUSTO C.
Bowdichia virgilioides Kunth, uma leguminosa arbórea comum no cerrado, ocorre no campo sujo, em que predomina o estrato herbáceo e em formações florestais, como o cerradão. Neste estudo investigou-se os efeitos do sombreamento e da seca sazonal no estabelecimento e desenvolvimento dessa espécie nestas duas fitofisionomias. O solo permaneceu úmido durante a maior parte da estação chuvosa, mas curtos períodos sem chuva afetaram o potencial de água das camadas superficiais. Ao longo da estação seca, o solo sob campo sujo secou mais rapidamente. A emergência de plântulas foi maior no campo sujo e a maior parte da mortalidade ocorreu logo após a emergência, durante a estação chuvosa. A estação seca não foi um fator importante de mortalidade. O ambiente...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Light availability; Microhabitats; Neotropical savannas; Soil water potential; Seedlings.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042000000400012

Morfologia e estabelecimento de plântulas de Cryptocarya moschata Nees, Ocotea catharinensis Mez e Endlicheria paniculata (Spreng.) MacBride - Lauraceae
Provedor de dados: 88
Autores: MORAES,PEDRO LUÍS RODRIGUES DE; PAOLI,ADELITA APARECIDA SARTORI.
Foram descritos aspectos morfológicos de plântulas de Cryptocarya moschata Nees, Ocotea catharinensis Mez e Endlicheria paniculata (Spreng.) MacBride em desenvolvimento, em condições naturais e em casa de vegetação, de material coletado no Parque Estadual de Carlos Botelho-SP (24º44' - 24º03'S e 47º46' - 48º10'W). C. moschata apresentou um padrão de desenvolvimento de plântulas diferente das demais, com pecíolos cotiledonares alongados e soldados na região hipocotilar, ausência de catáfilos, torção na região do hipocótilo, e emissão de um par de eófilos simultâneos. O. catharinensis e E. paniculata apresentaram plântulas com emissão simultânea de três a cinco eófilos espiralados, em média. Na natureza, as plântulas de C. moschata caracterizaram-se por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedlings; Cryptocarya moschata; Ocotea catharinensis; Endlicheria paniculata.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000500010

Morfologia de frutos, sementes, plântulas e plantas jovens de Dimorphandra mollis Benth. - faveira (Leguminosae-Caesalpinioideae)
Provedor de dados: 88
Autores: FERREIRA,ROBÉRIO ANASTÁCIO; BOTELHO,SORAYA ALVARENGA; DAVIDE,ANTONIO CLAUDIO; MALAVASI,MARLENE DE MATOS.
Foram estudados os aspectos morfológicos externos e internos do fruto e da semente, além de aspectos externos do processo germinativo e das fases de plântula e planta jovem de Dimorphandra mollis Benth. O trabalho foi realizado em laboratório e casa de vegetação, sendo observado que os frutos são indeiscentes, as sementes são albuminosas, a germinação é epígea fanerocotiledonar e, na fase de planta jovem, ocorre um espessamento das raízes primária e secundárias. Os resultados apresentados podem ser úteis em estudos taxonômicos, em trabalhos de laboratório e viveiro, bem como para estudos de regeneração natural.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fruit; Seed; Germination; Seedlings; Dimorphandra mollis.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000300009

Substrate and seed sowing position on the production of Plukenetia volubilis L. seedlings
Provedor de dados: 91
Autores: Jeromini,Tatiane S.; Barbosa,Ana S. V.; Silva,Givanildo Z. da; Martins,Cibele C.
ABSTRACT Plukenetia volubilis is a species native to the Amazonia and has economic potential due to the high contents of polyunsaturated fatty acids and vitamins of the seeds; however, information about production of seedlings in nursery is scarce. Factors that contribute to fast emergence and generation of vigorous seedlings are desirable for plant production in the nursery. Therefore, this study aimed to identify the most favorable substrate and seed position for the production of P. volubilis seedlings. The seeds were sown in the following four positions: hilum facing up, hilum facing down, seed lying on its cotyledon suture, and seed lying flat on one of its cotyledon faces. The substrates were sand, vermiculite and commercial substrate. Treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emergence; Sacha inchi; Seedlings; Vigor.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000600396

Partial purification and characterization of ribonucleases from roots, stem and leaves of cowpea
Provedor de dados: 93
Autores: FRANCO,OCTÁVIO LUIZ; GONDIM,LORRANCE ABREU; BEZERRA,KÁTIA REGINA; GUERRA,MARIA ELANE DE CARVALHO; LIMA,CARMEM ROGÉLIA FARIAS MACHADO; ENÉAS-FILHO,JOAQUIM; PRISCO,JOSÉ TARQUÍNIO; GOMES-FILHO,ENÉAS.
Partial purification and characterization of ribonucleases (RNase; EC 3.1.27.1) present in roots, stem and leaves of 5 day-old Pitiúba cowpea [Vigna unguiculata (L.) Walp.] seedlings are described. Crude extracts from the different tissues were precipitated with ammonium sulfate followed by ionic exchange chromatography (CM-Cellulose) resulting in purification factors of 48-fold for roots, 21 for stem and 42 for leaves. No deoxyribonuclease activity was practically observed. The molecular masses of the RNases did not significantly differ, averaging 16.3 kDa. Leaf RNase was stable up to 50ºC while the others were inactivated at this temperature. The maximal inactivation for both stem and roots RNases was reached at 70ºC while for leaf it occurred at 80ºC....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzyme effectors; Molecular mass; Nuclease; Optimum pH; Seedlings; Thermostability; Vigna unguiculata.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000300010

Evaluation of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) Seedlings
Provedor de dados: 94
Autores: Baron,Daniel; Ferreira,Gisela; Boaro,Carmen Sílvia Fernandes; Mischan,Martha Maria.
Choosing a substrate is the determinant factor for the seedling producer; thus, the aim of this study was to evaluate the effect of different types of substrates on the emergence of "araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) seedlings. The experiment was carried out in a greenhouse and the experimental design was in randomized blocks, with three treatments and five replicates of 72 seeds per plot. The treatments consisted of the following substrates: coconut fiber, vermiculite and Plantmax® Citrus. The number of emerged seedlings was weekly counted for 105 days. Data regarding seedling height were obtained, and the emergence velocity index and mean time, besides total emergence percentage and that over time were calculated. Results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annonaceae; Seeds; Seedlings; Logistic growth equation; Nursery.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000200030

Potential of Pinus elliottii Engelm. needles as substrate conditioner for the production of “Fepagro C37 reck”Citrus rootstocks”
Provedor de dados: 94
Autores: Ceccagno,Henrique; Souza,Vitor Dutra de; Schäfer,Gilmar; Avrella,Eduarda Demari; Fior,Claudimar Sidnei.
Abstract  The production of citrus seedlings in protected environment requires a large amount of substrate, which must have adequate physical and chemical characteristics. The use of acidic conditioners, such as Pinus needles mixed with alkaline substrates, allows the cultivation of seedlings with better quality. The objective of this work was to evaluate the development of the “Fepagro C37 Reck” rootstock grown in different alkaline commercial substrate mixtures (Humosolo ES®) with Pinus elliottii needles. The experiment was carried out by testing alkaline substrate mixed with 5-month old of decomposition Pinus needles in situ decomposition and two granulometry sizes, 3.5 and 8.0 mm. The mixtures were performed in proportions between the needles with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Physical-chemical characteristics of substrates; Protected environment; Seedlings; PH.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000301002

Gas exchange, phisiological indexes and ionic accumulation in Annona emarginata (Schltdl.) H. Rainer seedlings in nutrients solution
Provedor de dados: 94
Autores: Baron,Daniel; Ferreira,Gisela; Rodrigues,João Domingos; Boaro,Carmen Sílvia Fernandes; Macedo,Ana Cláudia.
"Araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) has been consider a good alternative in rootstock production for the main commercial Annonaceae species. Although this species develops in different soil and climate conditions, there is no understanding by the physiological responses of this species at different nutritional levels. Thus, the objective of this study was to evaluate the influence of different ionic strengths on development of vegetative species known as "Araticum-de-terra-fria". It was evaluated in seedlings grown in different ionic strengths (25% I, 50% I, 75% I and 100% I) of the complete nutrient solution Hoagland and Arnon (1950) nº 2, for 140 days, the following characteristics: Gas Exchange (CO2 assimilation rate,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annonaceae; Araticum-de-terra-fria; Seedlings; Rootstock; Macronutrients.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000200005

Advances in the spread of vegetative blueberry
Provedor de dados: 94
Autores: Schuch,Márcia Wulff; Tomaz,Zeni Fonseca Pinto.
Abstract  The lack of an efficient method of propagation in some cultivars makes it difficult to expand the blueberry culture. In Brazil, we still do not produce seedlings with needed quality and quantity to improve the sector. The cloning of the selected material through mini propagation and micro propagation is an alternative to increase the multiplication and rooting capacity of the blueberries. Allied to this, the use of cultivation system without soil for the development of cloned material facilitates the seedlings production. In addition, we can keep matrices in small spaces with the use of mini-gardens and clonal micro-gardens controlling climatic and nutritional factors. In the Laboratory of Fruit Plants Propagation, of the Phytotechnology...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedlings; Cloning; Mini propagation and micro propagation; Cultivation system without soil.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000104001

Advances in vegetative propagation of Olive tree
Provedor de dados: 94
Autores: Schuch,Márcia Wulff; Tomaz,Zeni Fonseca Pinto; Casarin,Josiane Vergara; Moreira,Roseane Maidana; Silva,Jacqueline Barcelos da.
Abstract  In Brazil, there is a growing interest in the crop of the olive tree, especially in those regions considered suitable for cultivation, where low temperatures occur between 8ºC and 10ºC in the period before flowering. The areas with these characteristics are located mainly in the South and Southeast regions of the country, characterized by a temperate climate in function of altitude, with the occurrence of natural vernalization. The propagation is an integral part of the production chain and the first step towards the implantation of the olive tree crop or renovation of the existing orchards. Obtaining quality seedlings, besides guaranteeing uniformity and reliable varietal origin, is a factor that influences the whole life of the orchard,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seedlings; Cloning; Mini propagation and micro propagation; Cultivation system without soil.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000201004

Denied density-dependent seedling recruitment in a fragmented forest does not decrease seedling diversity
Provedor de dados: 97
Autores: VALDIVIA,CARLOS E; SIMONETTI,JAVIER A.
Negative density-dependent relationships in plant communities are currently claimed as an important mechanism for the maintenance of plant diversity. However, anthropogenic perturbations such as forest fragmentation might modify such relationships. We evaluated density-dependent relationships between seed and seedling abundance of a tree assemblage in a fragmented forest for estimating seed-to-seedling transitions and their effects on seedling richness. In continuous forest, two out of four and one out of four species presented significant or a tendency to exhibit negative seedling recruitment which is in agreement with other temperate and tropical forests. In forest fragments (1-6 ha), however, this relationship was uncoupled. Seedling richness and...
Tipo: Journal article
Palavras-chave: Density-dependent recruitment; Diversity; Forest fragmentation; Seedlings; Seeds.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000200012

Influence of bamboo dieback on arboreal diversity in a subtropical forest fragment
Provedor de dados: 97
Autores: Capellesso,Elivane Salete; Weirich,Rafael; Dariva,Giamarco; Sausen,Tanise Luisa; Zanin,Elisabete Maria.
BACKGROUND: The vegetation structure and dynamics in subtropical forest fragments is influenced by the bamboo density. After the reproductive events followed by the death of the bamboos, is critical to understanding community structure and regeneration processes over time. The aim of this study was to evaluate temporally the influence of height and density of Merostachys multiramea on the richness, density and diversity of tree species after the event of bamboo dieback. The study was conducted in subtropical forest in southern Brazil, characterized by intense fragmentation of habitats, which facilitates the establishment of bamboo species RESULTS: We observed an increase in bamboo height over time, as well as an increase in the number of individuals...
Tipo: Journal article
Palavras-chave: Merostachys multiramea; Regeneration dynamic; Gaps; Forest structure; Seedlings.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2016000100001

Arbuscular mycorrhizal fungi associated with the rhizosphere of seedlings and mature trees of Swietenia macrophylla (Magnoliophyta: Meliaceae) in Los Tuxtlas, Veracruz, Mexico
Provedor de dados: 97
Autores: Rodríguez-Morelos,Víctor H; Soto-Estrada,Alejandra; Pérez-Moreno,Jesús; Franco-Ramírez,Alicia; Díaz-Rivera,Pablo.
BACKGROUND: Big-leaf mahogany (Swietenia macrophylla King) is the woody species with the highest economic value in Latin America. Currently, it is subject to intensive exploitation, diminishing its natural populations. Due to this decline, the species is a preferred species for reforestation and establishment of commercial tropical plantations. Mycorrhizal symbiosis is a biotic factor scarcely studied in the ecology of this species. Therefore, the objective of this research was to identify the diversity of arbuscular mycorrhizal fungi (AMF) species associated with the rhizosphere of seedlings and mature trees of big-leaf mahogany growing in its natural habitat, a tropical rain forest in Los Tuxtlas, Veracruz, Mexico. Soil samples from a 20-cm depth were...
Tipo: Journal article
Palavras-chave: Arbuscular mycorrhizae; Morphospecies; Seedlings; Spores; Tropical trees.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100009

Germination of Physalis peruviana L. seeds under varying conditions of temperature, light, and substrate
Provedor de dados: 124
Autores: Diniz,Fábio Oliveira; Chamma,Larissa; Novembre,Ana Dionisia da Luz Coelho.
ABSTRACT Optimum seed germination conditions are crucial for the complete utilization of the potential of a crop. Hence, the objective of this study was to evaluate the effects of light, temperature, and substrate on the germination of Physalis peruviana L. seeds. Three seed lots were used, which were first assessed over a temperature gradient of nine intervals (from 15 ºC to 35 ºC) and alternating temperatures of 20-30 ºC and 15-35 ºC under a photoperiod of 8h light. Subsequently, germination was studied according to the substrate used, i.e., paper (on paper), sand (between sand), and vermiculite (between vermiculite), under 8h light per day at a constant temperature of 25 ºC or alternating temperatures (20-30 ºC). Evaluations were conducted daily until...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cape gooseberry; Seedlings; Thermo-gradient table; Seed analyze.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100406

Processing Eucalyptus cloeziana seed lots to improve purity, germination and vigor
Provedor de dados: 63
Autores: Michelon,Thomas Bruno; Vieira,Elisa Serra Negra; Panobianco,Maristela.
ABSTRACT Eucalyptus cloeziana is one of the highest-density wood species offering significant added value, frequently used in the construction and furniture industries. Despite its suitability, it may be overlooked on account of its propagation difficulties due either to its low rooting cutting capacity or to its seeds having a low germination rate perhaps attributable to the high proportion of indistinguishable impurities within the seed lots. This study aimed to develop an efficient technique for Eucalyptus cloeziana seed processing to increase the physical purity and, consequently, the physiological quality of the seed lot. Three seed lots, separated by size in sieves with 1.18, 1.00, and 0.84 mm square openings, were used. X-ray analyses were carried...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalypt; Physical purity; Emergence; Seedlings.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000401601

Bacillus EFFECT ON THE GERMINATION AND GROWTH OF TOMATO SEEDLINGS (Solanum lycopersicum L)
Provedor de dados: 37
Autores: CABRA CENDALES,Teresa; RODRÍGUEZ GONZÁLEZ,Cristian Alonso; VILLOTA CUÁSQUER,Claudia Patricia; TAPASCO ALZATE,Omar Alberto; HERNÁNDEZ RODRÍGUEZ,Annia.
ABSTRACT The capacity to solubilize phosphate and to produce indole compounds Indole Acetic Acid type, was evaluated in 15 strains isolated from castor bean lignocellulosic residues (Ricinus communis). To determine the solubilizing activity of phosphates a qualitative test by using Pikovskaya culture medium was employed and for the evaluation of the production of indole compounds (IAA) a Salkowsky colorimetric analysis technique was applied. Among the microorganisms tested, the Bacillus pumilus GIBI 206 demonstrated capacity to solubilize phosphates and Bacillus subtilis GIBI 200 showed of capacity to solubilize phosphates and to produce Indoleacetic Acid (IAA). To determine the effect of the Bacillus subtilis strain on germination and growth promotion,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biotechnology; Indole; PGPB; Seedlings; Tomato.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2017000100004

River damming affects seedling communities of a floodplain forest in the Central Amazon
Provedor de dados: 39
Autores: Rocha,Maíra da; Feitosa,Yuri Oliveira; Wittmann,Florian; Piedade,Maria Teresa Fernandez; Resende,Angélica Faria de; Assis,Rafael Leandro de.
ABSTRACT The flood pulse of black water rivers in the Amazon basin determines the composition of species along the flood gradient in igapó forests. The Balbina dam, built on the Uatumã River, has altered the flood pulse and caused changes in the floristic composition of adult trees throughout the downstream area. There is a lack of studies on how communities of seedlings in igapó forests respond to changes in the flood pulse. This study investigates the response of seedling communities in the igapó forest downstream the Balbina dam and compares it with two pristine areas. The areas were sampled with transects of 1x25 m within 36 plots (25x25 m) along the flood gradient. Richness and dominance were calculated by simple regression and ordination analyses....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dams; Environmental stress; Flood gradient; Floodplain; Hydrologic cycle; Seedlings; Tropical rivers.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100192

Morphology of seeds and seedlings of four species of Vigna Savi (Leguminosae, Phaseolinae)
Provedor de dados: 39
Autores: Ojeda,Fabiana Soledad; Hoc,Patricia Susana; Amela García,María Teresa.
Four neotropical species of Vigna Savi (Leguminosae, Phaseolinae) have potential value as forage crops or ornamentals and could be cultivated in tropical or subtropical areas, even on floodplains. In order to obtain useful data for their culture and taxonomy, the seed morphology, germination pattern (hypogeal or epigeal) and seedling development were studied. The studied species belong to different sections of the genus: V. adenantha (G.F.W. Meyer) Maréchal, Mascherpa &amp;amp; Stainier (Sect. Leptospron); V. candida (Vell.) Maréchal, Mascherpa &amp;amp; Stainier (Sect. Sigmoidotropis); V. caracalla (L.) Verdc. (Sect. Caracallae) and V. luteola (Jacq.) Benth. (Sect. Vigna). The seeds were collected during fieldwork conducted in northwestern and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna; Seed morphology; Germination; Seedlings; Argentina.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300004

Potencial fisiológico de sementes de mamona tratadas com micronutrientes - doi: 10.4025/actasciagron.v32i4.4829
Provedor de dados: 1
Autores: Oliveira, Rosa Honorato de; Universidade FederalRural dePernambuco, Unidade Acadêmica de Serra Talhada; Souza, Myrne Jamilly de Lima; UESB; Morais, Otoniel Magalhães; UESB; Guimarães, Bruno Vinicius Castro; UESB; Pereira Júnior, Hercílio de Assis; UESB.
O objetivo deste trabalho foi verificar os efeitos da aplicação de micronutrientes sobre a germinação e o vigor de sementes de mamona, especificamente a cultivar BRS 149 Nordestina. Utilizou-se o delineamento experimental inteiramente casualizado, com quatro repetições de 25 sementes. Os tratamentos constaram da testemunha, imersão em H2O, imersão em B, imersão em Zn, imersão em Cu, imersão em Mn, imersão em Mo e imersão em Fe. Por meio dos resultados obtidos, evidencia-se incremento na germinação e no vigor com a aplicação de micronutrientes às sementes de mamona. O B influenciou negativamente a germinação e o vigor e aumentou a porcentagem de sementes duras e dormentes.
Palavras-chave: 5.01.00.00-9 e 5.01.03.00-8 Ricinnus communis L.; Germinação; Sementes; Vigor; Plântulas; Nutrientes Fertilidade do Solo e Adubação Ricinus communis L.; Germination; Seeds; Vigor; Seedlings; Nutrients.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4829

Temperatures and substrates for germination and vigor of Erythroxylum pauferrense Plowman seeds
Provedor de dados: 3
Autores: Ribeiro, João Everthon da Silva; Leite, Arliston Pereira; Nóbrega, Jackson Silva; Alves, Edna Ursulino; Bruno, Riselane de Lucena Alcântara; Albuquerque, Manoel Bandeira de.
Erythroxylum pauferrense is an endemic understory plant species of the Northeast Region of Brazil. The species is of great importance to the region and so ecophysiological studies are needed for its preservation. The objective of the present study was to determine the best substrates and temperatures for testing germination and seed vigor of E. pauferrense. An experiment was performed comprising a completely randomized design in a 5 x 4 factorial scheme, with five temperature regimes (20, 25, 30, 35°C constant and 20-30°C alternating) and four types of substrates (paper, vermiculite, sand and commercial substrate). The following characteristics were evaluated: germination percentage, first germination count, germination speed index, mean germination time,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Guarda-orvalho; Erythroxylaceae; Forest seeds; Ecophysiology; Seedlings; Atlantic forest.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/46030

Nutritional supplementation required by native Cerrado species development, in nursery
Provedor de dados: 3
Autores: Matias, Renan Augusto Miranda; Venturoli, Fábio; Martins, Rosana de Carvalho Cristo; Pieruzzi, Fernanda Piccolo; Abreu, Alexandre Leandro Santos de; Lima, Mirella Basileu de Oliveira.
 The ecological restoration of Cerrado ecosystems involves challenges pertinent to the fertilization of the substrate for seedlings in nursery, which are often produced by a single type of substrate. However, habitat heterogeneity suggests that the species may have different nutritional requirements. The objective was to assess the effect of substrate fertilization and nutritional supplementation by leaf in developing seedlings of Kielmeyera coriacea Mart. &amp; Zucc. Eugenia dysenterica (Mart.) and DC Handroanthus impetiginosus (Mart. ex DC.) Mattos. The experiment was implemented in a 3x3 factorial completely randomized design (three types of substrates x three levels of foliar fertilization), with ten replicates. The treatments were tested by analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.03.01-7 substrate; Foliar fertilization; Seedlings; Tree species. Botânica - Nutrição e Crescimento Vegetal.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/37047

Development of ornamental seedlings and cuttings for hydroponics using different substrate
Provedor de dados: 111
Autores: Fadel, Moustafa Amin.
This research paper focuses on investigating the effect of using various substrate materials on the development of seedlings for ornamental plants.  Bermuda grass (Cynodon dactylon), Petunia (Compacta Enana Rosa) and Epipremnum aureum, Bermuda; Petunia and Epipremnum aureum were cultivated in different substrates.  Synthetic sponge (Polyurethane sponge), Rockwool and sterilized cotton were used as the substrate materials in each case where an experimental water-circulating apparatus was designed and installed to execute the test. Results showed that after 15 days, Bermuda grass in Rockwool reached a germination rate of 70% while it did not exceed 50% in sponge or in medically treated cotton.  The highest germination rate after 20 days for Petunia was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydroponics hydroponics; Germination; Seedlings; Cuttings.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3851

Re-induction of desiccation tolerance after germination of Cedrela fissilis Vell. seeds
Provedor de dados: 42
Autores: MASETTO,TATHIANA E.; FARIA,JOSE M.; FRAIZ,ANA C.R.
This work aimed to characterize the re-induction of desiccation tolerance (DT) in germinated seeds, using polyethylene glycol (PEG 8000). Cell changes were investigated through cytological assays (cell viability and transmission electronic microscopy) as well as DNA integrity during loss and re-establishment of DT. The loss of DT was characterized by drying germinated seeds with different radicle lengths (1, 2, 3, 4 and 5 mm) in silica gel, decreasing the moisture content to ten percentage points intervals, followed by pre-humidification (100% RH / 24 h) and rehydration. To re-induce DT, germinated seeds were treated for 72 h with PEG (-2.04 MPa) and PEG (-2.04 MPa) + ABA (100 µM) before dehydration. Germinated seeds did not tolerate desiccation to 10%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytological alterations; DNA integrity; Seedlings; Moisture content.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301273

Anatomical root variations in response to water deficit: wild and domesticated common bean (Phaseolus vulgaris L)
Provedor de dados: 48
Autores: Peña-Valdivia,Cecilia B; Sánchez-Urdaneta,Adriana B; Meza Rangel,Joel; Juárez Muñoz,Juana; García-Nava,Rodolfo; Celis Velázquez,Raquel.
Root anatomical responses to water deficit are diverse and regulation of water uptake strongly depends on plant anatomy. The ancestors of common bean (Phaseolus vulgaris L.) cultivars are the wild common beans. Because wild beans adapt and survive well in theon atural environment, it is hypothesized that wild common bean roots are less affected than those of domesticated beans at low substrate water potential (&amp;#968;W). A wild common bean accession from Chihuahua Mexico and cv. Bayomex were studied. Seedlings with a mean root length between 3 and 4 cm were maintained for 24 h in vermiculite at &amp;#968;W of -0.03 (well hydrated), -0.65, -1.48 and -2.35 MPa (partially dry). Ten anatomical characteristics of differentiation and cell division in root...
Tipo: Journal article
Palavras-chave: Endodermis; Protoderm; Seedlings; Water potential; Xylem.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400006

SHOOT AND ROOT EVALUATIONS ON SEEDLINGS FROM Coffea GENOTYPES
Provedor de dados: 53
Autores: RAMOS,LUIS CARLOS DA SILVA; CARVALHO,ALCIDES.
Roots and shoots from seedlings of 29 coffee genotypes were studied to better characterize the entries from the Coffea germplasm bank of the Instituto Agronômico (IAC), Campinas, State of São Paulo, Brasil. The varieties were seeded in a randomized complete block design with 6 replications and 10 plants per plot. The characters evaluated were: plant (PL), shoot (SL) and root (RL) length; total plant (PDM), shoot (SDM), root (RDM) and lateral root (LRDM) dry matter. A lateral root index (LRI) and shoot root dry matter (SRDM = SDM/RDM) and length ratios; (SRL = SL/RL) were calculated. The dwarf varieties (Catuaí, Icatu-caturra, Vila Sarchi, San Ramon, Vila Lobos, São Bernardo) presented higher LRDM and lower SDM than the normal size varieties such as Mundo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea; Coffee; Varieties; Seedlings; Shoots; Roots; Coffea.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051997000100006

Morphological aspects of the propagation in Heliconia velloziana L. Emygd. (Zingiberales: Heliconiaceae)
Provedor de dados: 52
Autores: Simão,Daniela G.; Scatena,Vera L.
Morphology of seed and vegetative propagation was studied toHeliconia velloziana L. Emygd. (Heliconiaceae), a rhizomatous herb with a large aerial part. Seeds took about four months to germinate, probably due to the undifferentiated embryo and hard endocarp. Seedlings had two first foliar structures as scale leaves and the primary root developed, but the adventitious roots were more conspicuous. Vegetative propagation by rhizomes was faster than the sexual one. The roots developed after one month, while young shoots started developing after four to six weeks; young aerial shoots presented a variable number of cataphylls and two protophylls.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Heliconia; Rhizomes; Seedlings; Seed propagation; Vegetative propagation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100011

The improvement of bioactive secondary metabolites accumulation in Rumex gmelini Turcz through co-culture with endophytic fungi
Provedor de dados: 58
Autores: Ding,Chang-hong; Wang,Qian-Bo; Guo,Shenglei; Wang,Zhen-yue.
Abstract Aspergillus sp., Fusarium sp., and Ramularia sp. were endophytic fungi isolated from Rumex gmelini Turcz (RGT), all of these three strains could produce some similar bioactive secondary metabolites of their host. However the ability to produce active components degraded significantly after cultured these fungi alone for a long time, and were difficult to recover. In order to obtain more bioactive secondary metabolites, the co-culture of tissue culture seedlings of RGT and its endophytic fungi were established respectively, and RGT seedling was selected as producer. Among these fungi, Aspergillus sp. showed the most significant enhancement on bioactive components accumulation in RGT seedlings. When inoculated Aspergillus sp. spores into media of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rumex gmelini Turcz (RGT); Endophytic fungi; Aspergillus sp.; Seedlings; Bioactive secondary metabolites.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200362