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| Oliveira, Ademir Kleber Morbeck; UNIDERP; Alves, Felipe Fernandes; UNIDERP; Gadum, Juliana; UNIDERP. |
| Informações sobre a viabilidade e substratos adequados para a germinação de sementes de espécies arbóreas nativas são escassas. Cordia glabrata (louro-preto), espécie pioneira e de ampla distribuição, está incluída entre essas espécies. Suas características permitem a utilização em ornamentação, na prática apícola e na medicina popular. Levando em conta seu potencial de utilização, este trabalho teve por objetivo avaliar as taxas de germinação, em diferentes substratos, de sementes recém-colhidas e armazenadas até 120 dias em laboratório, as quais foram coletadas no Pantanal do Rio Negro, Estado do Mato Grosso do Sul. Foram realizados testes com sementes recém-colhidas e após 30, 60, 90 e 120 dias de armazenamento, em três tipos de substrato (papel-filtro,... |
| Tipo: Germinação |
Palavras-chave: 2.00.00.00-6 Ciências Biológicas sementes florestais; Teste de germinação; Conservação da semente; Viabilidade; Louro-preto Ecofisiologia Vegetal forest seeds; Germination test; Seed conservation; Feasibility; Louro preto. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1013 |
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| Tarré,Erika; Pires,Bárbara Balzana Mendes; Guimarães,Ana Paula Mançano; Carneiro,Leonardo Alves; Forzza,Rafaela Campostrini; Mansur,Elisabeth. |
| (Germinability after desiccation, storage and cryopreservation of seeds from endemic Encholirium Mart. ex Schult. & Schult. f. and Dyckia Schult. & Schult. f. species (Bromeliaceae)). Seed storage procedures require previous determination of optimal temperature and light conditions for germination, as well as of tolerance to desiccation and low temperatures. The aim of this paper was to study the effects of desiccation, storage at low temperatures and cryopreservation on the germinability of seeds of six Encholirium and two Dyckia species, which were selected according to vulnerability criteria. Initial germinability of newly harvested seeds varied from 35 to 95%. Seeds presented photoblastic behaviour since light was necessary to induce or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cryopreservation; Espinhaço mountain range; Germination; Orthodox seeds; Seed conservation. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062007000400003 |
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| Faria,José M.R.; Davide,Lisete C.; Silva,Edvaldo A. A. da; Davide,Antonio C.; Pereira,Roselaine C.; van Lammeren,André A.M.; Hilhorst,Henk W.M.. |
| The remarkably short storability of recalcitrant seeds has prevented their inclusion in programs of ex situ conservation. The causes of their desiccation sensitivity and rapid decline in viability during storage are not fully elucidated yet. In this study the highly recalcitrant, fully viable embryos of the tree species Inga vera subsp. affinis were stored under various conditions and analyzed physiologically and cytologically at intervals, in order to obtain more insights in their loss of viability during storage. Embryos stored fully hydrated at 5ºC fully lost viability in 18 d. Sealed storage of partially dehydrated embryos slightly prolonged their viability, with 95% germination being attained after 14 d of storage. However, after 30 d of storage,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abscisic acid; Polyethylene glycol; Recalcitrant seeds; Seed conservation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000400008 |
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| Drumond, Anailda Angélica Lana; Sales, Juliana de Fatima; Zuchi, Jacson; Camelo, Gessimar Nunes; Souza, Moara Mariely Vinhais. |
| Environment and storage time influence stored seed quality, especially for oilseeds such as castor beans because they have a high lipid content and are more prone to deterioration. This study evaluated the physiological quality of seeds from three castor bean genotypes stored at 10 and 20°C for 300 days. The experimental design was completely randomized, with 4 replications, in a 2 x 6 (2 temperatures x 6 storage periods) split-plot design. The seeds were placed in low-density polypropylene bags and stored in climatic chambers at 10 and 20°C, in which the temperature and relative humidity were registered. Physiological quality (germination, germination rate index, emergence, rate of emergence, electrical conductivity and accelerated aging) were evaluated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ricinus communis L.; Seed conservation; Dormancy; Temperature. Produção e Beneficiamento de Sementes. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/43583 |
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