A5060216569- Seed Germination and Physiology
- Growth and nutrition in plants
- Fern and Epiphyte Biology
- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Soil Management and Crop Yield
- Plant tissue culture and regeneration
- Botany, Ecology, and Taxonomy Studies
- Animal and Plant Science Education
- Coastal wetland ecosystem dynamics
- Biological Control of Invasive Species
- Botany and Plant Ecology Studies
- Leaf Properties and Growth Measurement
- Botanical Research and Applications
- Plant Diversity and Evolution
- Plant responses to water stress
- Agricultural and Food Sciences
- Marine and coastal plant biology
- Species Distribution and Climate Change
- African Botany and Ecology Studies
- Allelopathy and phytotoxic interactions
- Plant Growth Enhancement Techniques
- Lichen and fungal ecology
- Recycled Aggregate Concrete Performance
- Plant Stress Responses and Tolerance
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
2014-2023
Universidade Federal de Viçosa
2012
Epiphytes are hyper-diverse and one of the frequently undervalued life forms in plant surveys biodiversity inventories. Atlantic Forest, most endangered ecosystems world, have high endemism radiated recently Pliocene. We aimed to (1) compile an extensive Forest data set on vascular, non-vascular plants (including hemiepiphytes), lichen epiphyte species occurrence abundance; (2) describe distribution order indicate future sampling efforts. Our work presents first with information abundance...
O presente trabalho teve como objetivos definir o tipo de substrato e a temperatura mais adequados à germinação sementes jenipapo (Genipa americana L.), conhecer morfologia das seu desenvolvimento pós-seminal, caracterizando as plântulas normais, os padrões anormalidade. Para tanto, realizou-se um experimento colocando-se sobre seguintes substratos: papel, vermiculita solo, nas temperaturas constantes 20°C, 25°C, 30°C, 35°C alternada 20°C-30°C. delineamento estatístico empregado foi...
The morphology of Eugenia dysenterica DC. (Myrtaceae) seeds and post-seminal development was studied its germination response investigated in relation to temperature, desiccation under different drying regimes storage three temperatures. are elliptical, varying from globose half-globose seedlings cryptogeal with long slender axial roots. High percentages were achieved at temperatures ranging 15° 30°C the thermal optimum about 24°C. Seeds presented high moisture contents on shedding (47-53%)...
O objetivo deste trabalho foi definir o tipo de substrato e a temperatura mais adequada à germinação sementes Dalbergia nigra (Vell.) Fr. All. Ex Benth (jacarandá-da-bahia), conhecer morfologia seu desenvolvimento pós-seminal caracterizar as plântulas normais, os padrões anormalidade. As foram semeadas nos substratos sobre papel, rolo papel vermiculita, nas temperaturas constantes 20, 25, 30 35°C alternadas 20-30°C 20-35°C. delineamento estatístico empregado inteiramente casualizado (6x3),...
O estudo teve como objetivos caracterizar as sementes, fornecendo informações sobre o tipo e tempo médio de germinação formação plântulas, além descrever a morfologia do desenvolvimento pós-seminal seis espécies Bromeliaceae. Os resultados mostram epígea plântulas criptocotiledonares para todas espécies. As porcentagens máximas obtidas, acima 80%, indicam alta qualidade fisiológica das sementes. foi 4-15 8-18 dias, respectivamente. sementes são filiformes elípticas, lisas ou com apêndices...
Advancing functional ecology depends fundamentally on the availability of data reproductive traits, including those from tropical plants, which have been historically underrepresented in global trait databases. Although some valuable databases created recently, they are mainly restricted to temperate areas and vegetative traits such as leaf wood traits. Here, we present Rock n' Seeds, a database seed germination experiments Brazilian rock outcrop vegetation, recognized outstanding centers...
Six-month-old seedlings of Cytharexyllum myrianthum and Genipa americana, two common tree species in different flood-prone areas Brazil, were flooded for up to 90 days compare their survival growth responses under these conditions. Seedlings both found be relatively tolerant flooding but changed according treatment plant species. Growth G. americana was reduced by flooding, showing a decrease root leaf dry mass, root/shoot ratio height, without any adaptive morphological changes. On the...
Estudou-se o comportamento germinativo de quatro espécies Bromeliaceae [Alcantarea imperialis (Carrière) Harms, Pitcairnia flammea Lindl., Vriesea heterostachys (Baker) L. B. Sm. e penduliflora Sm.], oriundas do Parque Estadual Ibitipoca - MG, com preferências contrastantes habitat representando duas formas vida diferentes. Os objetivos presente estudo foram: a) caracterizar as sementes quanto ao tipo germinação descrever a morfologia desenvolvimento pós-seminal; b) avaliar efeito das...
Abstract We evaluated the effect of temperature regimes (six constant and four alternating temperatures), light qualities (five red : far ratios) water potentials (ΨW; seven NaCl polyethylene glycol 6000 [PEG] solutions) on percentage germination rate, as well post‐seminal development morphology, that allow Pilosocereus arrabidae seeds to germinate in a hot semiarid climate south‐eastern Brazilian coast. The results showed germinated similarly between temperatures, with an optimal at 25/20°C...
Abstract As all naturalized species are potential invaders, it is important to better understand the determinants of naturalization alien plants. This study sought identify traits that enable tree Casuarina equisetifolia overcome barriers survival and reproductive become on sandy coastal plains. Restinga vegetation in Brazil was used as a model system conceptualize quantify key stressors (high temperature, solar radiation, drought salinity) which can limit initial establishment Experiments...
L., Cedro. Desta forma, realizou-se um experimento, de acordo com o fatorial 3 x 3, utilizando os substratos rolo papel toalha (R.P.), sobre filtro (S.P.) e vermiculita (S.V.), nas temperaturas constantes 25 30°C na faixa alternada 20-30°C. O delineamento estatistico empregado foi inteiramente casualizado no sistema fatorial, 4 repeticoes sementes cada, onde foram analisados seguintes parâmetros: germinacao total normal (%), primeira contagem plântulas normais indice velocidade emergencia...
O conjunto de coleções biológicas sob a guarda do Jardim Botânico Rio Janeiro (JBRJ) vai além das exsicatas herbário e plantas vivas arboreto, inclui também em estufas, xiloteca, carpoteca, bancos sementes DNA, cultura fungos coleção etnobotânica. Juntas estas diferentes contabilizam cerca 665 mil espécimes, que contribuem para ampliar o conhecimento da flora neotropical. A partir final século XX início XXI, com mudança paradigma envolvendo conservação uso racional biodiversidade planeta, as...
The morphology of Genipa americana seeds and post-seminal development was studied, its germination response investigated in relation to storage water, substrate water volume, osmotic potential temperature light regimes. are flattened seedlings phaneroepigeal with leafy cotyledons. Seeds stored kept viable for up 6 mo, but seedling emergence were reduced after 4 mo. Germination not affected under water-logged conditions, at the volume corresponding a column two times deeper than seeds' mean...
Abstract With increasing rates of habitat destruction and species loss, ex situ conservation is gaining global momentum reluctance in relying on rapidly giving way to a more optimistic, strategic view. Target 8 the Global Strategy Plant Conservation calls for at least 75 percent threatened plant accessible collections, preferably country origin, 20 them included recovery restoration programs. Here, we provide updated information Brazil's progress towards through nationwide examination how...
O ipê-branco (Tabebuia roseo-alba) é espécie amplamente utilizada em reflorestamentos mistos destinados à recomposição de áreas degradadas e preservação permanente, no paisagismo geral na construção civil. Suas sementes passam por forte variação qualidade durante o armazenamento, possuindo período viabilidade curto, que representa dificuldades estabelecimento técnicas cultivo dispersão natural. objetivo desta pesquisa foi estudar comportamento fisiológico das armazenamento. Frutos colhidos...