Consulta: subjectFacets:"Morphological characterization"
Registros recuperados: 10
Data/hora: 16/06/2024 06:51:08

Diversidad morfológica de maíces nativos (Zea mays L.) en el trópico húmedo poblano: magnitud y usos.
Provedor de dados: 32
Autores: López Morales, Fernando.
La diversidad del maíz es tal que en cada región de México existen variedades locales adaptadas a las condiciones climáticas, edáficas, altitudinales y de manejo, bajo las cuales se está produciendo este cultivo. Por esta razón se ha planteado que la actual diversidad genética presente en las poblaciones locales de maíz, ha sido el producto de la interacción entre las diferentes culturas étnicas y las diversas condiciones ambientales que crean los agroecosistemas en las regiones de temporal. Por lo tanto, este estudio tuvo por objetivo general el estudiar la diversidad morfológica y de usos de los maíces nativos cultivados en cuatro municipios del trópico húmedo de Puebla: Tenampulco, Ayotoxco de Guerrero, Hueytamalco y San José Acateno. Para ello, durante...
Palavras-chave: Características agronómicas; Caracterización morfológica; Correspondencia racial; Poblaciones nativas; Usos; Agronomic traits; Landraces; Morphological characterization; Racial correspondence; Uses; EDAR; Estrategias para el Desarrollo Agrícola Regional; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/1721

Caracterización morfológica y fenología de biotipos de Phalaris minor RETZ. resistentes y susceptible a herbicidas inhibidores de la ACCasa.
Provedor de dados: 32
Autores: García Franco, José Luis.
Phalaris minor Retz. (“alpistillo”) es considerada como una maleza importante en el cultivo de trigo en la región del Bajío Mexicano, que ha desarrollado resistencia a herbicidas inhibidores de la Acetil Coenzima A Carboxilasa (ACCasa). Se ha consignado que más de la mitad de la población de Phalaris spp. comúnmente escapa del control manual a causa de la similitud morfológica con el cultivo de trigo. El objetivo de la presente investigación fue determinar si existen diferencias morfológicas y fenológicas entre biotipos resistentes y susceptible de P. minor a los herbicidas, y cultivares de trigo. Se realizaron experimentos en Montecillo, México en condición de no competencia. Se emplearon cuatro biotipos de alpistillo resistentes y uno susceptible,...
Palavras-chave: Graminicidas; Mimetismo; Caracterización morfológica; Trigo; Graminicides; Morphological characterization; Wheat; Botánica; Maestría; Mimicry.
Ano: 2013
URL: http://hdl.handle.net/10521/1873

Experience with Descriptors, Registration and Protection of vegetable cultivars: eggplant as a case study
Provedor de dados: 75
Autores: Carvalho,Sabrina IC; Reifschneider,Francisco JB; Ribeiro,Cláudia SC; Bianchetti,Luciano B; Fernandez,Francisco L.
ABSTRACT The Registro Nacional de Cultivares [RNC (National Register of Cultivars)] and the Serviço Nacional de Proteção de Cultivares [SNPC (National Service for Cultivar Protection)] were established by the Ministry of Agriculture, Livestock and Food Supply (MAPA) in 1997. The registration of a cultivar in the RNC allows the production, processing and commercialization of seeds in the country. The right of commercial exploitation, assured by the protection of a cultivar in the SNPC, allows the allocation of resources to public and private breeding programs, and the subsequent launching of new cultivars. The authors’ experience with the theme and its relevance to the public and private sectors provided the base for this article, thus sharing the elements...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum melongena; Intellectual property; Seeds; Morphological characterization; Genetic breeding.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000200146

Compatibility and ectomycorrhiza formation among Pisolithus Isolates and Eucalyptus spp
Provedor de dados: 90
Autores: Pereira,Olinto Liparini; Costa,Maurício Dutra; Borges,Arnaldo Chaer; Araújo,Elza Fernandes; Kasuya,Maria Catarina Megumi.
Twenty-nine isolates of the ectomycorrhiza fungus Pisolithus sp. from different geographical and host origins were tested for their ability to form ectomycorrhizae on Eucalyptus grandis and E. urophylla seedlings under greenhouse conditions. The ectomycorrhiza-forming capacity of isolates varied greatly from one eucalypt species to the other. All isolates from Eucalyptus, nine from Pinus spp. and two isolates from unknown hosts formed mycorrhizae with E. grandis and E. urophylla. Root colonization rates varied from 0 to 5.2 % for all Pinus isolates and those from unknown hosts. Colonization rates for these isolates were lower than those observed for Eucalyptus isolates (0.8 to 89.4 %). Three isolates from unknown hosts formed mycorrhizae with neither...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ectomycorrhiza colonization; Eucalyptus grandis; Eucalyptus urophylla; Morphological characterization; Sclerotia.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832005000300003

Plant biometrics of malay, rose and water apple
Provedor de dados: 94
Autores: Nacata,Guilherme; Andrade,Renata Aparecida de.
Abstract  Due to the lack of studies comparing Syzygium malaccensis(L) Meer e Perry, Syzygium aqueum Burm.f. and Syzygium jambos (L) Alston Syzygium in relation to the botanical genus Sygygium regarding the physical characteristics, the present research was conducted, aiming at biometrically characterizing each of the three species, as well as comparing them. The fruits were collected from the São Paulo State University (Unesp), School of Agricultural and Veterinarian Sciences, Jaboticabal. Syzygium plants were used for the evaluation of: fruit and seed masses (g); width and length of leaves (cm) and of seeds (cm); percentage of fruit pulp; length of leaf petiole (cm); and leaf area (cm2). Fifty fruits, leaves and seeds of each species were used, with 5...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Description; Morphological characterization; Syzygium; Variability.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000600601

Clonal evaluation and recurrent flowering of ornamental pineapple hybrid for use as miniature potted plant
Provedor de dados: 124
Autores: Silva,Bruna de Fátima Batista da; Souza,Everton Hilo de; Dias,Lucas Ezequiel da Costa; Silva,Ronilze Leite da; Souza,Fernanda Vidigal Duarte.
ABSTRACT The objective of this study was to evaluate the cloning and recurrent flowering of the miniature pineapple hybrid ORN-MUT based on quantitative and qualitative morphological descriptors for possible use as a potted plant. Besides its reduced size, the ORN-MUT hybrid is notable for its pink fruit, absence of thorns and recurrent flowering at the crown, formed after the plant's complete cycle (562 days). The hybrid was assessed in the experimental field of the Embrapa Cassava and Fruits research unit in two flowering stages (first flowering and recurrent flowering) and was characterized by quantitative and qualitative morphological descriptors. A joint analysis of the data (multivariate analysis) was performed to verify the distinguishability and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ananas comosus (L.) Merrill; Morphological characterization; Phenology; Floriculture.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000400625

Morphoanatomy and histochemistry analyses of cassava roots do not discriminate resistant from susceptible genotypes to soft root rot
Provedor de dados: 36
Autores: SILVA,Jonny Lucio Sousa; MOURA,Elisa Ferreira; ILKIU-BORGES,Fernanda; GALVÃO,Jessivaldo Rodrigues; FARIAS-NETO,João Tomé de; SILVA,Gisele Barata da; RÊGO,Marcela Cristiane Ferreira; CUNHA,Roberto Lisboa.
ABSTRACT Cassava is an important culture in Brazil and in the North of the country, and soft root rot has affected root production. The aim of this work was to identify root morphoanatomic and histochemical characters associated with root rot resistance. In areas with no occurrence of the disease, nine cassava genotypes were tested, four of which were resistant, and five were susceptible to root rot. Root harvest was carried out twelve months after sowing, and thickness of suber, suber and cortex, and secondary xylem were measured. Moreover, texture, suber cell layers, lignin content, and lignin monomers content of the portion suber and cortex were analyzed. Also, histochemical tests and scanning electron microscopy (SEM) analyses of the roots were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Morphological characterization; Genetic breeding; Manihot esculenta.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000100001

Fungal species that cause powdery mildew in greenhouse-grown cucumber and melon in Paraná State, Brazil - doi: 10.4025/actasciagron.v34i3.13999
Provedor de dados: 1
Autores: Aguiar, Bárbara de Melo; Universidade Estadual de Maringá; Vida, João Batista; Universidade Estadual de Maringá; Tessmann, Dauri José; Universidade Estadual de Maringá; Oliveira, Ricardo Ribeiro de; Universidade Estadual de Maringá; Aguiar, Ronilda Lana; Universidade Estadual de Maringá; Alves, Tatiane Cristina Albuquerque; Universidade Estadual de Maringá.
The powdery mildew caused by Oidium spp. is an important disease for several crops of the Cucurbitaceae family. Although the teleomorphs, Podosphaera xanthii and Golovinomyces cichoracearum, currently have already been described as the causal agents of powdery mildew in Brazil, only P. xanthii is considered the main causal agent of powdery mildew field epidemics. The objective of this work was to identify and determine the prevalence of the species causing powdery mildew in cucumber (Cucumis sativus) and melon (Cucumis melo var. reticulatus) grown in greenhouses in the State of Paraná in Brazil. The morphological traits of the conidial stages, such as the presence of fibrosin bodies and a germinative tube, were used to identify the species. Leaves...
Tipo: Fieldwork; laboratory analysis
Palavras-chave: Morphological characterization; Grafting; Podosphaera xanthii; Golovinomyces cichoracearum.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13999

Comparative pollen morphological analysis in the subgenera Passiflora and Decaloba
Provedor de dados: 42
Autores: SOARES,TALIANE L.; JESUS,ONILDO N.; SOUZA,EVERTON H.; ROSSI,MÔNICA L.; OLIVEIRA,EDER J.
ABSTRACT The genus Passiflora is the most diversified of the Passifloraceae, and its palynology presents wide morphological variability. The objective of the study was to evaluate the pollen morphology of 18 Passiflora species in order to identify informative pollinic characteristics to contribute to the taxonomic classification of the genus. The morphology of the pollen grains and the exine structure were investigated using light microscopy and scanning electron microscopy. Differences in the pollen morphology were found in the studied species, mainly in terms of shape, pollen aperture and ornamentation pattern of the exine. Most of the species belonging to the subgenus Passiflora presented ornamented 6-syncolpate pollen grains with an oblate-spheroidal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passifloraceae; Pollen grains; Scanning electron microscopy; Exine; Morphological characterization.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502381

Organography of greenhouse and field accessions of wild Arachisspecies (section Arachis)
Provedor de dados: 53
Autores: Veiga,Renato Ferraz de Arruda; Faria,Leonardo de Grazia; Valls,José Francisco Montenegro; Fávero,Alessandra Pereira.
ABSTRACT Peanut or groundnut (Arachis hypogaea L.) is a globally important oilseed crop, with important nutritional qualities, and a rich source of amino acids and protein. Another 80 species have been described in the genus Arachis, 64 of which are found in Brazil, and even though their morphology and agronomic traits remain largely unknown, they have been cultivated for forage and for landscaping and have great potential for breeding with cultivated peanut. Thus, the morphological characterization of wild Arachis species is essential for their conservation and use. In this study, we present a morphological and agronomic characterization of 29 diploid accessions of eleven wild Arachis species and one of the tetraploid A. monticola (section Arachis) with A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peanut; Morphological characterization; Descriptors; Principal component analysis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100083