Maria Terezinha Silveira PauliloUniversidade Federal de Santa Catarina, Florianópolis, Brazil · Departamento de Botânica
Maria Terezinha Silveira Paulilo
PhD
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45
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Introduction
Publications
Publications (45)
Plantas sob forte sombreamento (2% ou 6% da luz solar direta) apresentaram, em relação às plantas sob maior nível de luz, menor biomassa, menores taxas de crescimento, menor razão raiz/parte aérea, menor massa foliar específica (MFE), menor razão clorofila a/b e maior razão de área foliar (RAF). Com o aumento da irradiância as plantas apresentaram...
In this study aspects of the ecophysiology and morphology of the seed and seedling of Raulinoa echinata was
analyzed aiming to contribute with taxonomic studies, ecology and the preservation of this species. Fruit and
seeds were collected from a population located in Apiúna (SC). The seedlings obtained from germination
were grown in trays filled wi...
This study analyzed morpho-anatomy and histochemistry of seed coats, the effect of temperature on breaking seed dormancy and changes in water gap of Colubrina glandulosa Perkins (Rhamnaceae). Thermal shocks, alternating temperatures and forest environments were tested to analyze the break of physical dormancy. Morpho-anatomical studies were made us...
The morphoanatomy and germination of dormant seeds of Peltophorum dubium (Spreng.) Taub. and Mimosa bimucronata (DC) O. Kuntze, Atlantic forest Fabaceae species, were examined. Temperature treatments for breaking physical dormancy were applied, and the effects of three forest environment on seed germination were examined. The location of water inle...
So far data in the literature indicate that (1) the
relative proportion of tropical species with dormant versus
non-dormant seeds tends to increase with a decrease in
temperature and precipitation, (2) in rain forests, more
species with non-dormant seeds have been found, (3) in
rain forests, physiological dormancy is normally the most
common type o...
Dormancy-breaking requirements of Sophora tomentosa and Erythrina speciosa (Fabaceae) seeds. The physical dormancy of seeds has been poorly studied in species from tropical forests, such as the Atlantic Forest. This study aimed to examine the effect of moderate alternating temperatures on breaking the physical dormancy of seeds, the morphoanatomy a...
Water absorption and dormancy-breaking requirements of physically dormant seeds of Sophora tomentosa L. and Erythrina speciosa Andr. (Fabaceae-Faboideae) Carolina Maria Luzia Delgado1, Alexandre Souza de Paula2, Marisa Santos3 and Maria Terezinha Silveira Paulilo4 1-Departamento de Botânica, Universidade Federal de Santa Catarina, Florianópolis, 88...
In view of the uses of Colubrina glandulosa Perkins var. reitizi (M.C. Johnson) M.C. Johnson, sobraji, in forest regeneration and commercial exploration, this work studied aspects of the development of seedlings in field (Lowland Dense Ombrophilous and Submontane Dense Ombrophilous Forest) and in greenhouse. This was done by direct sowing, in green...
This study analysed the anatomical structure of the seed coats, identified the location of water uptake and evaluated the effects of alternating temperatures and heat treatment on the breaking of physical dormancy of two species of Fabaceae (Caesalpinioideae), Cassia leptophylla and Senna macranthera, from the Atlantic forest of Brazil. The seed co...
Physical dormancy refers to seeds that are water impermeable. Within the Fabaceae, the structure associated with the breaking of dormancy is usually the lens. This study verified the role of the lens in physical dormancy of seeds of Schizolobium parahyba, a gap species of Fabaceae from the Atlantic Forest of Brazil. The lens in S. parahyba seeds ap...
This study analysed the anatomical structure of the seed coats, identified the location of water uptake and evaluated the effects of alternating temperatures and heat treatment on the breaking of physical dormancy of two species of Fabaceae (Caesalpinioideae), Cassia leptophylla and Senna macranthera, from the Atlantic forest of Brazil. The seed co...
Plant anatomy is useful for the characterization of species and their associated environment. Many species, because of habitat features, can show anatomical alterations of wood that permit their survival in the environment, quantity of vessels and rays, for example. Other anatomical alterations caused by structural-physiological conditions present...
[Germination behavior of Sophora tomentosa L. (Fabaceae: Faboideae) from
three populations]
Fabaceae is an important botanical family with a large number of species with
dormant seeds. The aim of this study was to determine the presence or absence of
dormancy in seeds of Sophora tomentosa. Seeds were collected in Florianópolis,
SC, on the beachs of...
In this study aspects of the ecophysiology and morphology of the seed and seedling ofRaulinoa echinatawasanalyzed aiming to contribute with taxonomic studies, ecology and the preservation of this species. Fruit andseeds were collected from a population located in Apiúna (SC). The seedlings obtained from germinationwere grown in trays filled with su...
In this study aspects of the ecophysiology and morphology of the seed and seedling of Raulinoa echinata was analyzed aiming to contribute with taxonomic studies, ecology and the preservation of this species. Fruit and seeds were collected from a population located in Apiúna (SC). The seedlings obtained from germination were grown in trays filled wi...
Enviado em julho de 2010. Aceito em novembro de 2010. RESUMO Guapira opposita é uma espécie arbórea encontrada em ambiente sombreado e úmido da Floresta Ombrófila Densa e em áreas abertas ensolaradas e com baixa disponibilidade hídrica como as de restinga. Este trabalho teve como objetivo comparar as folhas de plantas da floresta e da restinga, bus...
Mentha x piperita L. var. piperita (mint pepper) is utilized due to the presence of essential oils, mainly because of the component menthol produced in glandular trichomes. The influence of light intensity and substratum fertility was evaluated on the amount produced and quality of the essential oil. The light intensities utilized were 100%, 70% an...
Resumo A introdução e manejo de plântulas de Euterpe edulis Mart. em florestas tem sido uma alternativa encontrada para não levar a espécie à extinção devido ao extrativismo desenfreado. O objetivo deste estudo é ampliar o conhecimento das exigências ecológicas das plântulas desta espécie, visando auxiliar sua conservação in situ. Frutos despolpado...
Cordia curassavica (Jacq.) Roem. & Schult. (Boraginaceae), also referred to as Cordia verbenacea DC, has been traditionally used for medicinal purposes. This study was driven to verify the behavior of the species in similar conditions to its natural environment, such as high light intensity and sandbank soil, and in conditions of low light intensit...
Resumo
O objetivo do trabalho foi averiguar a resposta de escape à sombra estimulada pela proximidade de plantas vizinhas em plântulas de Cecropia glazioui (embaúba), distribuídas em lotes de diferentes densidades de plantas. Foi verificado que as plantas foram capazes de perceber uma planta vizinha distando até 20cm. A resposta de crescimento em...
Guapira opposita is a tree species that occurs in the shaded and humid environment
of the Floresta Ombrófila Densa and in sunny and dry sandbank areas. This work had
as objective to compare the anatomical characteristics of the leaves from forest and sandbank, looking for differences that can favor the survival of the species in such
different envi...
Resumo A introdução e manejo de plântulas de Euterpe edulis Mart. em florestas tem sido uma alternativa encontrada para não levar a espécie à extinção devido ao extrativismo desenfreado. O objetivo deste estudo é ampliar o conhecimento das exigências ecológicas das plântulas desta espécie, visando auxiliar sua conservação in situ. Frutos despolpado...
Dicksonia sellowiana spores were cultivated in mineral solution. After 30 days, young gametophytes were transferred to different substrates: soil rich in organic matter; coxim: coconut fiber; sterilized red soil; sterilized red soil with the addition of organic compost, to determine the best substrate for gametophytes' and sporophytes' development....
RESUMO Estudo prévio com plantas jovens de Cecropia glazioui crescidas sob tela de polietileno mostrou a resposta destas plantas à variação de luz entre 2% a 50% de luz solar. O presente trabalho pretendeu responder às seguintes questões em relação à resposta de plantas jovens desta espécie à variação de luz entre 50% a 100% de luz solar e sob somb...
This study analysed the behaviour of Cecropia glazioui Sneth. and Cedrela fissilis Vell. seedlings across a 2-50% full sun light gradient. The morphological adjustments of the seedlings to the different light regimes were interpreted as means of light interception in low light and avoidance of water stress in high light conditions. Cecropia seedlin...
Em plantas cultivadas em substrato não esterilizado, inoculado ou não com fungos micorrízicos
arbusculares, analisou-se, através de dois experimentos em separado, o efeito de quatro intensidades de luz
(70%, 50%, 30% e 4% da luz solar incidente) e de dois regimes hídricos (saturado e insaturado) sobre o crescimento
e micorrização de plântulas de Ta...
Two separate experiments analyzed the effect of four light intensities (70%, 50%, 30% and 4% of incident solar light) and two water regimes (saturated and non-saturated) on the growth and intensity of mycorrhizal colonization of Tabebuia avellanedae ex Lorentz Griseb. (purple trumpet tree; Bignoniaceae), in plants cultivated in non-sterilized subst...
The growth response of seedlings of three woody species from the Tropical Atlantic rain forest to changing light
conditions was studied. The species were the early successional Cecropia glazioui Sneth., the intermediary in succession
Cedrela fissilis Vell. and the late successional Bathysa australis (A. St.-Hil.) Hook. ex Sch. These species showed,...
The growth response of seedlings of three woody species from the Tropical Atlantic rain forest to changing light conditions was studied. The species were the early successional Cecropia glazioui Sneth., the intermediary in succession Cedrela fissilis Vell. and the late successional Bathysa australis (A. St.-Hil.) Hook. ex Sch. These species showed,...
O crescimento e a eficiência na utilização de nutrientes foram determinados para plantas jovens de Euterpe edulis Mart. cultivadas em dois níveis de irradiância (50% e 2% da luz solar, com irradiância máxima de 900 e 36 µmol de fótons m-2 s-1, respectivamente) e dois níveis de nitrogênio (56,1 e 6,5 mg L-1) e fósforo (10,0 e 2,0 mg L-1). O nível de...
The aim of this research was to study the effect of light on the seed germination and
early growth of Maytenus robusta Reiss. (Celastraceae) and Hedyosmum brasiliense Mart.
(Chloranthaceae), forest species of medicinal interest. The germination of the seeds was verified
under light and dark and the growth of plants verified under three shading leve...
(Seed reserves mobilization in ElIIerpe edlllis Mart. and elTect of mineral nutrition
in seedlings). The seed reserves of EUle/l'e edll/is finished when the seedlings showed the 20 " green
leal' complctely expanded. This fact could be the callse of the great mortality observed in field
conditions by seedlings showing the )'" green leai". Seedlings...
The seed reserves of Euterpe edulis finished when the seedlings showed the 2nd green leaf completely expanded. This fact could be the cause of the great mortality observed in field conditions by seedlings showing the 3rd green leaf. Seedlings of Euterpe edulis, until age of five months, did not present higher growth under higher nutrition. Older se...
Se cultivó plántulas de Qualea grandiflora a partir de semillas de "Cerrado", con distintas cantidades de agua, en invernadero o cámara de crecimiento, eligiendo 5 o 10 plantas al azar. Reaccionaron al limitado aporte hídrico disminuyendo la conductividad estomática y los potenciales hídrico y de turgencia. En las plantas bajo deficit hídrico no se...
The paper discusses the effect of low nutrient and water suply on growth of cerrado woody species and compares the growth rates of cerrado and non-cerrado woody species. The recent data from cerrado shrub-tree growth species indicates that the poor condition of mineral and water suplly of cerrado soil limit the potential growth of some cerrado wood...
The paper discusses the effect of low nutrient and water supply on growth of cerrado woody species and compares tile growth rates of cerrado and non-cerrado woody species. The recent data from cerrado shrub-tree growth species indicates that the poor condition of mineral and water supply of cerrado soil limit the potential growth of some cerrado wo...
The activities of ribulose-1,5-bisphosphate carboxylase-oxygenase, Rubisco (E.C. 4.1.1.39) and phosphoenolpyruvate carboxylase,
PEPc (E.C. 4.1.1.31), and concentrations of protein and chlorophyll were measured in extracts from cotyledons and first leaves
of Qualea grandiflora Mart. (Vochysiaceae) seedlings after transfer from high-light (20 days at...
Axis growth commenced only 20 h from imbibition in Phaseolus vulgaris when both uptake of water and oxygen were levelling off. Cotyledonary dry material was exhausted by day 9, the greatest rates of transfer occurring from day 2. Utilization of reserve protein proceeded relatively faster than dry matter and proportionately more was translocated to...
The presence of the embryo axis promotes starch hydrolysis in cotyledons of Phaseolus vulgaris and, although reduced rates of enzyme activity proceed in its absence, weight loss from the cotyledon is only significant in its presence. Application of gibberellic acid at various concentrations had no effect upon amylase or protease activity in either...
