Annual Flowering
Mostrando 13-24 de 53 artigos, teses e dissertações.
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13. RESOURCE SHARING AND DISTRIBUTION OF RISK IN ANNUAL SPECIES OF TROPICAL ZONE Semiarid / Partilha de recurso e distribuiÃÃo de riscos em espÃcies anuais da zona tropical semiÃrida
Theoretical and empirical inferences about resources sharing and risk spreading based on seed germination and plants phenodynamics are concentrated in studies of annual desert species. These mechanisms should be standard for species that coexist in any environment where the risk of reproductive failure is high, as in Brazilian tropical semiarid. This study
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/03/2011
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14. Modeling the phenology of ¿royal gala¿ and ¿fuji suprema¿ apple trees in function of the climate, in the Vacaria region, Brazil / Modelagem aplicada à fenologia de macieiras Royal Gala e Fugi Suprema em função do clima, na região de Vacaria, RS
The production of apple in Southern Brazil is limited by climate conditions. Low and continuous air temperature during winter seasons are indispensable to plants for initiating a new vegetative cycle, and for an adequate budding and flowering. Besides of low temperature in winter, thermal conditions in spring and summer seasons have also influence in plant d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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15. Soil organic matter pools under management systems and natural Cerrado vegetation / Compartimentos da matéria orgânica do solo sob sistemas de manejo e vegetação natural de cerrado
Different soil organic matter pools under management systems and natural Cerrado vegetation were studied. These pools were estimated using their carbon and nitrogen contents. Total soil organic carbon and total nitrogen (COT and NT), carbon and nitrogen of particulate organic matter (COP and NP), mineral-associated organic carbon and nitrogen (COM and NM), p
Publicado em: 2009
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16. Compartimentos da matéria orgânica do solo sob sistemas de manejo e vegetação natural de cerrado / Soil organic matter pools under management systems and natural Cerrado vegetation
Different soil organic matter pools under management systems and natural Cerrado vegetation were studied. These pools were estimated using their carbon and nitrogen contents. Total soil organic carbon and total nitrogen (COT and NT), carbon and nitrogen of particulate organic matter (COP and NP), mineral-associated organic carbon and nitrogen (COM and NM), p
Publicado em: 2009
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17. Compartimentos da matéria orgânica do solo sob sistemas de manejo e vegetação natural de cerrado / Soil organic matter pools under management systems and natural Cerrado vegetation
Different soil organic matter pools under management systems and natural Cerrado vegetation were studied. These pools were estimated using their carbon and nitrogen contents. Total soil organic carbon and total nitrogen (COT and NT), carbon and nitrogen of particulate organic matter (COP and NP), mineral-associated organic carbon and nitrogen (COM and NM), p
Publicado em: 2009
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18. Ecological wood anatomy and cambial activity of Roupala rhombifolia (Proteaceae) in Serra do Cipó (MG) / Anatomia ecológica do lenho e atividade cambial de Roupala rhombifolia (Proteaceae) na Serra do Cipó (MG)
The intensity of environmental variations is smaller on tropical than temperate regions. Therefore, tropical species were considered for years as evergrowing. In addition, environmental variations can exist in small and big scales and species should respond differently depending on each environmental stimulus. By these reasons, the aim of the study was to an
Publicado em: 2009
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19. Polinização, sistema reprodutivo e abelhas visitantes de duas espécies simpátricas de Byrsonima (Malpighiaceae) em área de cerrado no Maranhão, Brasil / Breeding system and two species of bees sympatric Byrsonima (Malpighiaceae) in areas of cerrado,Maranhao, Brazil.
(Pollination and Reproduction System of Byrsonima umbellata Mart. (Malpighiaceae) in Cerrado at Maranhão, Brazil). The reproductive biology of Byrsonima umbellata was studied in a Cerrado area close to Bom Jesus (0312 28 S, 4324 12 W) far from 46 km of the municipal district of Urbano Santos, northeast of Maranhão, Brazil, from Mar to Oct/2005 and Mar to O
Publicado em: 2007
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20. Fenologia de floração e polinização de espécies ornitófilas na Serra da Bodoquena, Mato Grosso do Sul, Brasil
Hummingbirds are the major group of vertebrate pollinators in the neotropical region and, at these sites, plants pollinated by these birds can account for 2-15% of angiosperm species. The goals of this study were: (i) to analyze the flowering phenology and pollination of ornitophilous species in two environments (forest gallery and Semi-deciduous forest) of
Publicado em: 2007
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21. POLLINATION AND BREEDING SYSTEM OF MURICI PITANGA (Byrsonima chrysopylla Kunth.) IN A SANDBANK AREA. / SISTEMA DE POLINIZAÇÃO E REPRODUÇÃO DO MURICI PITANGA (Byrsonima chrysopylla Kunth.) em uma área de restinga.
(Phenology, floral biology and reproductive murici cherry (Byrsonima chrysophylla - Malpighiaceae)) Byrsonima chrysophylla, popularly known as wild cherry Surinam cherry is a shrub that occurs in dunes. The phenology, breeding system and pollination of plant species were studied in a fragment of restinga in Buriti Farm, Municipality of Barreirinhas (2 43 22,
Publicado em: 2007
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22. Diferentes sistemas de cultivo na economia de agua e produtividade do feijão de inverno irrigado / Different soil tillage systems in the economy of water and productivity of the winter bean crop irrigated
The intensification of soil use by the techniques as the irrigation has providing annual increase crops number and reduction of the enterprise risks. However, the irrigated agriculture needs to be more efficiency, through use the no tillage system that promote increases the productivity e reduction of the applied water. The aim this research was to demonstra
Publicado em: 2007
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23. Fenologia e chuva de sementes em Floresta Estacional Semidecidual no município de Viçosa, Minas Gerais, Brasil. / Phenology and seed rain in Semidecidual Seasonal Forest in Viçosa, Minas Gerais, Brazil
The present study was divided in two chapters. On the first it was aimed to study the phenology of 20 arboreal species and to answer the following questions: (1) Which is the seasonality degree in the production of flowers, fruits, falling and leaf shooting? (2) Are there any flowering and fructification synchrony intra and interespecific? (3) What is the in
Publicado em: 2007
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24. Biologia reprodutiva e germinação de sementes em Adenostemma brasilianum (Pers.) Cass. (Asteraceae) / Reproductive biology and seed germination of Adenostemma brasilianum. (Pers.) Cass. (Asteraceae)
Specific studies on the reproductive biology and seed germination of Adenostemma brasilianum are inexistent. Aiming to fill this gap, the objective of this study was to investigate its life history (reproductive phenology and fruit dispersion process), reproductive biology, including tests on the efficiency of two types of materials in isolating the heads fr
Publicado em: 2007