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| Registros recuperados: 20 | |
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| Alvarado Beltrán, Gregorio. |
| Con la finalidad de evaluar el nivel de diversidad morfológica y genética de maíces nativos de los nichos ecológicos de Libres, Mazapiltepec y Huamantla, correspondientes a los estados de Puebla y Tlaxcala, se desarrolló la presente investigación, la cual se dividió en dos etapas. La primera comprendió una caracterización morfológica, evaluando 134 poblaciones nativas de la región de estudio, siete testigos raciales y tres testigos comerciales, en un diseño experimental látice simple 12 x 12 con dos repeticiones en tres localidades, registrándose 21 caracteres morfológicos. La segunda consistió en un análisis isoenzimático en 49 poblaciones nativas representativas y cinco testigos raciales, explorando diez sistemas enzimáticos que codifican para 19 loci.... |
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Palavras-chave: Zea mays L.; Poblaciones nativas; Recursos fitogenéticos; Variabilidad genética; Landraces; Plant genetic resources; Genetic variability; Doctorado; Genética. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/182 |
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| Alvarado Beltrán, Gregorio. |
| Con la finalidad de evaluar el nivel de diversidad morfológica y genética de maíces nativos de los nichos ecológicos de Libres, Mazapiltepec y Huamantla, correspondientes a los estados de Puebla y Tlaxcala, se desarrolló la presente investigación, la cual se dividió en dos etapas. La primera comprendió una caracterización morfológica, evaluando 134 poblaciones nativas de la región de estudio, siete testigos raciales y tres testigos comerciales, en un diseño experimental látice simple 12 x 12 con dos repeticiones en tres localidades, registrándose 21 caracteres morfológicos. La segunda consistió en un análisis isoenzimático en 49 poblaciones nativas representativas y cinco testigos raciales, explorando diez sistemas enzimáticos que codifican para 19 loci.... |
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Palavras-chave: Zea mays L.; Poblaciones nativas; Recursos fitogenéticos; Variabilidad genética; Landraces; Plant genetic resources; Genetic variability; Doctorado; Genética. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/182 |
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| Alizadeh,Mohammad Ali; Zehtabchi,Fatemeh; Jafari,Ali Ashraf. |
| Abstract In order to investigate diversity and explain the relationships of essential oil yield with morphological traits, 84 populations T. polycephalum, were sown in the field using randomized complete blocks design (RCBD) with three replicates in Research Institute of Forest and Rangeland, Tehran, Iran in 2013-2014. Data were collected for flowering date, growth degree days (GDD), stem number, plant height, dry matter (DM) yield, essential oil percentage, and essential oil yield. The relationships among traits were determined using correlation, regression and factor analysis. The genetic distance and genotype classification were determined using cluster analysis. DM yield was positively correlated with plant height, canopy cover, stem number and oil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Early flowering date; Genetic variation; Phenotypic correlations; Morphological traits; Plant genetic resources. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100177 |
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| Gomes,Hugo Teixeira; Bartos,Patrícia Monah Cunha; Andrade,Maíra Teixeira de; Almeida,Raphael Ferreira; Lacerda,Luciana Florencio de; Scherwinski-Pereira,Jonny Everson. |
| Abstract: The objective of this work was to evaluate the micropropagation of blackberry (Rubus spp.) cultivars, after in vitro conservation under minimal growth conditions. Nodal segments of the 'Guarani', 'Caingangue', 'Ébano', and 'Xavante' genotypes were conserved under minimal growth conditions at 20ºC, for 15 months. Microshoots were regenerated and multiplied by up to five successive subcultures, when they were rooted and acclimatized. After 30 days of acclimatization in a greenhouse, rooted plantlets showed no significant losses. Blackberry cultivars can be conserved in vitro for 15 months, without subcultures and, after this time, they can be micropropagated on a large-scale, maintaining the regenerative potential and multiplication. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rubus; Ex situ conservation; Plant genetic resources; Plant propagation; Slow-growth. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201286 |
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| Medeiros,Marcelo Gurgel; Silva Neto,José Sisenando de Sênna; Oliveira,Giordanio Bruno Silva; Torres,Salvador Barros; Silveira,Lindomar Maria da. |
| ABSTRACT Maturation of seeds involves a systematic sequence of physical and physiological alterations observed from fecundation until they become independent of the mother plant. These alterations comprehend a set of steps which prepare them for a successful germination in the future, characterized by the synthesis and accumulation of reserves. Thus, the objective was to evaluate the development and physiological quality of seeds of L. cylindrica accessions during maturation. Fruits of L. cylindrica accessions were harvested from the 10th day after anthesis (DAA) until the 50th DAA, at 10-day intervals. In each harvest, fruit fresh weight was determined, and then the seeds were manually extracted and subjected to the following evaluations: 100-seed weight,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucurbitaceae; Loofah; Plant genetic resources; Physiological quality. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100076 |
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| Novaes,Carolina Ribeiro Diniz Boaventura; Mota,Elias Emanuel Silva; Novaes,Evandro; Telles,Mariana Pires de Campos; Chaves,Lázaro José. |
| Abstract Eugenia dysenterica DC. (cagaita tree) is a fruit tree native to the Brazilian Cerrado. It is a promising species for cultivation, but little basic information exists on the phenotypic diversity and quantitative variation of its fruits and seeds at a population scale. Thus, the present study proposes to estimate the phenotypic parameters of the species’ fruits and seeds based on the variability among mother plants and among subpopulations, thereby aiming to increase knowledge for breeding and conservation of the species. For this, 25 natural subpopulations (local populations) were sampled in five Brazilian states. Within each subpopulation, 20 fruits were collected from each of six sampled mother plants. Data for biomass, transverse and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cagaita; Quantitative variation; Cerrado; Morphometric characterization; Plant genetic resources. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000302001 |
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| Santiago-Luna,Eric G; Carrillo-Rodríguez,José C; Chávez-Servia,José L; Perales-Segovia,Catarino; Heredia-Garcia,Elena. |
| ABSTRACT In a collection of costeño peppers conserved by indigenous producers from the municipalities of Santa Maria Tonameca and Santo Domingo de Morelos, Oaxaca, Mexico, a description and classification of agromorphological variation was undertaken by characterization of 46 populations in a greenhouse distributed under complete randomized block design with three replicates. Days to first flowering, plant and fruit traits and yield per plant were evaluated. Significant differences were detected for all traits except for plant height at 120 days after planting. In a principal component analysis, the variables of green and dry weight of 15 fruits, average fruit weight, number of fruits and yield per plant were the characteristics with major descriptive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Phenotypic diversity; Plant genetic resources; Characterization; Multivariate analysis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300399 |
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| Registros recuperados: 20 | |
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