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Germination and development of pecan cultivar seedlings by seed stratification PAB
Poletto,Igor; Muniz,Marlove Fátima Brião; Poletto,Tales; Stefenon,Valdir Marcos; Baggiotto,Carine; Ceconi,Denise Ester.
Abstract: The objective of this work was to evaluate the effect of seed stratification on germination rate, germination speed, and initial development of seedlings of six pecan (Carya illinoinensis) cultivars under subtropical climatic conditions in southern Brazil. For stratification, the seeds were placed in boxes with moist sand, in a cold chamber at 4°C, for 90 days. In the fourteenth week after sowing, the emergence speed index, total emergence, plant height, stem diameter, and number of leaves were evaluated. Seed stratification significantly improves the germination potential and morphological traits of the evaluated cultivars.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carya illinoinensis; Dormancy break; Germination; Rootstock; Seedling quality.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001201232
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Ethnobotany and antioxidant evaluation of commercialized medicinal plants from the Brazilian Pampa Acta Botanica
Teixeira,Marianne Pinheiro; Cruz,Litiele; Franco,Jeferson Luis; Vieira,Renara Bittencourt; Stefenon,Valdir Marcos.
Despite the importance of medicinal plants for the healthcare of local people, the knowledge about medicinal species used in the Pampa biome has been neglected over the years. In this study, an ethnobotanical survey was employed aiming to characterize the species richness and diversity of commercialized medicinal plant species in five cities within the Brazilian Pampa. Additionally, among the listed plants, ten species were selected for in vitro testing of their potential antioxidant activity. A total of 56 plant species belonging to 33 botanical families were listed by the 115 interviewees. No significant difference in commercialized medicinal plant species, and very similar species richness was observed among the cities, indicating that the local...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ethnobiology; Ethnopharmacology; Gaúcho; Oxidative stress; Pampa biome.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100047
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Evidence of morphometric differentiation among Antarctic moss populations as a response to local microenvironment Acta Botanica
Medina,Rayssa Garay; Barcellos,Suziane Alves; Victoria,Filipe de Carvalho; Albuquerque,Margéli Pereira de; Pereira,Antonio Batista; Stefenon,Valdir Marcos.
ABSTRACTStudies on phenotypic variation among populations growing in different microenvironments may provide information about plasticity related to environmental pressures, and thus help to elucidate the potential evolutionary forces contributing to the origin and maintenance of diversity in any region. In this study we investigate morphometric variation on a small geographic scale for three species of Antarctic mosses. All species revealed significant differentiation among populations for all evaluated traits. The comparison of morphometric measures of populations of Polytrichum juniperinumfrom Nelson Island and from southern Brazil suggests that the effects of a small geographic scale in Antarctica are the same as a large geographic scale in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Andreae gainii; Bryum pseudotriquetrum; Nelson Island; Phenotypic plasticity; Polytrichum juniperinum.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000300383
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Dormancy overcome and seedling quality of pecan in nursery Ciência Rural
Poletto,Tales; Muniz,Marlove Fátima Brião; Poletto,Igor; Stefenon,Valdir Marcos; Maciel,Caciara Gonzatto; Rabusque,Jéssica Emilia.
ABSTRACT: This study evaluated the efficiency of methods to overcome seed dormancy in different storage periods in the production of pecan seedlings. Seeds were submitted to the following treatments: T1, T4 and T7 - control treatments (seeds with no treatment, stored at room temperature for 30, 60 and 90 days, respectively), T2, T5 and T8 - stratification (seeds were distributed in boxes with wet sand maintained at a temperature of 4°C for 30, 60 and 90 days, respectively), T3, T6 and T9 - scarification + stratification (seeds scarified with sandpaper n.80 and stratified by 30, 60 and 90 days, respectively), in completely random experimental design. Plant height, stem diameter, number of leaves, full emergence and emergence speed index (ESI) were evaluated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scarification; Stratification; Emergence; Carya illinoinensis.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101980
Registros recuperados: 4
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