Consulta: subjectFacets:"Seed morphology"
Registros recuperados: 6
Data/hora: 09/06/2024 11:22:48

Diversidad morfológica de accesiones de papayo (Carica papaya L.) provenientes de tres estados de México.
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Hernández Salinas, Gregorio.
Se realizaron dos estudios con accesiones de Carica papaya L. provenientes de Baja California Sur, Veracruz y Campeche, México. En el primero, mediante descriptores morfológicos para papaya se cuantificó la diversidad morfológica en 20 accesiones de papayo en plantas femeninas (F) y hermafroditas (Hf), evaluando 25 características cuantitativas y 16 cualitativas. En base al análisis de componentes principales, las características cuantitativas de mayor contribución a la variabilidad total fueron: diámetro, longitud, diámetro de cavidad central, grosor de la pulpa, contenido de sólidos solubles totales, longitud del pedúnculo, color (valor a* y L*-CIELAB) del fruto, altura a la primera flor y número de nudos. Las características cualitativas de mayor...
Palavras-chave: Carica papaya L.; Brix; Calidad de fruto; Morfología de la semilla; Fruit quality; Seed morphology; Agroecosistemas Tropicales; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/1997

Morphology and germination of Acmella oleracea L. R. Jansen under different temperatures and photoperiods
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Sarmento,Erivanessa Costa Sousa; Pereira,Kleane Targino Oliveira; Oliveira,Fernando Sarmento de; Leal,Caio César Pereira; Torres,Salvador Barros; Dutra,Alek Sandro.
ABSTRACT The objective was to evaluate the physical characteristics and physiological behavior of A. oleracea seeds during imbibition and germination, under different temperatures and photoperiods, as well as to determine the duration of the germination test. For this, biometric parameters (length, width and thickness) were measured in 100 seeds and thousand-seed weight was determined. In addition, the external structures of seeds and seedlings were described and the imbibition curve was monitored. Subsequently, the germination test was conducted at temperatures of 20, 25, 30, 35, 20-30 and 25-35 ºC, under constant and alternating light and dark photoperiods (12 h), arranged in 6 x 3 factorial scheme, with four replicates of 50 seeds. Seeds were sown in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asteraceae; Jambu; Imbibition; Seed morphology; Seed analysis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000400660

Seed traits of species from South Brazilian grasslands with contrasting distribution
Provedor de dados: Acta Botanica Brasilica
Autores: Martins,Alexandre Cristante; Marchioretto,Rafaella Migliavacca; Vieira,Ariane Tonetto; Stiehl-Alves,Eudes Maria; Santos,Eliane Kaltchuk dos; Souza-Chies,Tatiana Teixeira de.
ABSTRACT South Brazilian grasslands are among the most species-rich grasslands worldwide yet they have been suffering ongoing degradation due to land-use. Little is known about the reproductive ecology of the native species of these grasslands. Thus, our goal was to characterize seed traits and germination requirements of three native species of the tribe Tigridieae (Iridaceae, Iridoideae) due to its richness in the Pampa biome and the contrasting morphology, cytogenetics, and geographic distributions of its representatives. We tested if closely related species possess similar seed traits and whether species with wider distributions have broader germination requirements. Seed production and mass were estimated, and morphological analyses, germination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Functional traits; Germination; Grasslands; Iridaceae; Photoinhibition; Regeneration niche; Reproductive ecology; Seed morphology; Time-to-event analysis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400730

Morphology of seeds and seedlings of four species of Vigna Savi (Leguminosae, Phaseolinae)
Provedor de dados: Acta Botanica Brasilica
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

Taxonomic relationships in some Vicia species from Egypt, based on seed morphology and SDS-PAGE of seed proteins - doi: 10.4025/actascibiolsci.v35i4.19345
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Abdel Khalik, Kadry Nabeh; Sohag University, Faculty of Science; Al Gohary, Iman Hussien.
The seed morphology and seed proteins of 11 Vicia taxa from Egypt were studied. Macro- and micro-morphological characters, including seed shape, color, size, hilum shape and seed sculpture were described and analyzed. The secondary sculpture of the cell wall varies from papillose in nearly all Vicia species to lophate in V. hirsuta. Further, the seed proteins of studied taxa were investigated by SDS-PAGE and 39 different bands were scored. The similarity analysis based on the SDS-PAGE profile and seed morphology was found to be a useful characteristic for the discrimination of Vicia species both on the subgeneric and the sectional levels. The present study did not acknowledge V. tetrasperma and V. hirsuta as subgenus Ervum. As a result, division of Vicia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxonomy Taxonomy; Vicia; Seed proteins; Seed morphology; Sections taxonomy  Vicia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19345

Seed morphology and post-seminal development of Tillandsia L. (Bromeliaceae) from the "Campos Gerais", Paraná, Southern Brazil
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Scatena,Vera Lucia; Segecin,Simone; Coan,Alessandra Ike.
This work studied the morphology and post-seminal development of seeds of Tillandsia gardneri Lindl., T. streptocarpa Baker, and T. stricta Sol. ex Sims (Bromeliaceae) from the "Campos Gerais", State of Paraná, Southern Brazil. The seeds (ca. 2.0 mm long) presented plumose appendages at their micropylar end, an important structure in the taxonomy of the family since it represented an elaborate apparatus allowing effective wind-dispersal. Seeds germinated after circa twenty days. The haustorial cotyledon, responsible for the seedling nutrition, appeared first during the germination process. No cataphyll or primary roots developed. A small tank came along in the seedling, formed by the base of the sheath of the first leaf, which overlapped that of the second...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tillandsia; Seed morphology; Post-seminal development.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700012