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| Vieira,Fábio de Almeida; Gusmão,Eduardo. |
| Estudos de biometria de frutos e sementes são importantes para o entendimento da variabilidade existente nas espécies nativas. Apesar da importância ecológica e econômica de Talisia esculenta, não se conhecem as características biométricas dos frutos e não há informações sobre a emergência das plântulas. Objetivou-se caracterizar fisicamente frutos e sementes e estudar os efeitos do armazenamento sobre a emergência das plântulas. Analisou-se a biometria de 260 frutos e sementes. A emergência de plântulas foi avaliada a partir de sementes recém-coletadas e armazenadas por 15, 30 e 60 dias. As médias de massa de matéria fresca, comprimento e diâmetro dos frutos foram, respectivamente, 15,02 g, 32,59 mm e 26,33 mm e para as sementes 4,49 g, 25,08 mm e 13,62... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservação; Longevidade; Pitombeira; Recalcitrante. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542008000400006 |
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| Chagas,Kyvia Pontes Teixeira das; Freire,Ageu da Silva Monteiro; Pinheiro,Luciana Gomes; Fajardo,Cristiane Gouvêa; Vieira,Fábio de Almeida. |
| Abstract This study aimed to estimate the genetic diversity of three Elaeis guineensis populations in Rio Grande do Norte state, as well as to verify the decreases in effective population size. The population with the highest polymorphism was MAT (Mata) with+ 57 loci (72%), followed by RIA (Riacho) with 54 loci (68%) and HOR (Horta) with 34 loci (43.03%). The RIA population was shown to be the most genetically diverse, with Nei (h = 0.28) and Shannon (I = 0.41) diversity indices. There was high genetic differentiation among populations (AMOVA, analysis of molecular variance = 42%), which was separated into three distinct genetic groups according to a Bayesian analysis. There was a significant population decrease (P < 0.05) for the HOR population in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Molecular Marker; Bottleneck; ISSR; Conservation. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000400801 |
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| Vieira,Fábio de Almeida; Appolinário,Vivette; Fajardo,Cristiane Gouvêa; Carvalho,Dulcinéia de. |
| We investigated the reproductive biology of Protium spruceanum (Benth.) Engler in vegetation corridors of secondary Atlantic forest in Lavras, southern Minas Gerais State, Brazil. The reproductive phenology was investigated fortnightly over a one year period. Floral biology studies involved pollen viability analysis, nectar production, stigmatic receptivity, pollen tube growth, visiting insect species and visit rates. The small, pale yellowish flowers (0.3-0.4 cm diameter) are functionally unisexual and organized in dense inflorescences (ca. 45 flowers). P. spruceanum presented annual flowering between September and November. Staminate flowers supplied a high percentage of viable pollen (90.6%) and relatively abundant nectar (x = 4.5 μL). Pistillate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dioecy; Floral visitors; Flowering; Fruiting; Secondary forest. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000400018 |
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