Thaíse da Silva Tonetto

ANÁLISE DE AGRUPAMENTOS EM REMANESCENTE DE FLORESTA ESTACIONAL DECIDUAL

This study intended to analyze the presence of clusters in the vegetation of Seasonal Deciduous Forest

Intensidad de sombra como condición para la plantación de especies forestales: estudio con Apuleia leiocarpa

This study aimed at identifying the most appropriate level of shading for initial growth of Apuleia leiocarpa seedlings, through their survival, morphological and physiological/biochemical parameters. The following treatments were evaluated: 0 (full sun), 18, 50 and 70 % of shading. Survival was assessed at 30 and 360 days after planting and morphological parameters such as height (H), stem diameter (SD) and H/SD ratio were measured bimonthly for a year. Physiological parameters as contents of chlorophyll a, chlorophyll b, chlorophyll a/b ratio, carotenoids, lipid peroxidation, acid phosphatase enzyme activity, initial fluorescence, maximum fluorescence, maximum quantum yield of photosystem II and electron transport rate were estimated at 180 and 360 days after planting. At 30 days after planting (d.a.p) there was no mortality of Apuleia leiocarpa seedlings influence of different levels of shading. In the assessments performed at 180 and 360 d.a.p., there was no significant difference among levels of shading for H and SD. However, high mortality rates were observed at 360 d.a.p., especially in full sun. Morphological and physiological parameters of Apuleia leiocarpa plants showed this species requires shading (18 and 50 %) in their early stages of growth.

DINÂMICA DA CHUVA DE SEMENTES EM REMANESCENTE DE FLORESTA ESTACIONAL SUBTROPICAL

The aim of this study was to evaluate the dynamics of the seed rain in two Floristic groups formed in a remnant of Subtropical Seasonal Forest. The clusters were characterized by successional stage of the forest, namely group I (Secondary Forest in Intermediate Stage-FSEM), with a predominance of early secondary species, and group II (Secondary Forest in Advanced Stage-FSEA), with a predominance of late secondary species. Seed rain was evaluated in 70 collectors of 1 m², randomly distributed in the two groups, whereas in group I were installed 15 collectors and in group II, due to its greater area, 55 collectors. The deposited material was collected monthly from October 2008 to October 2010. The dynamics of seed rain was assessed by the density of seeds of each species of dispersal and seasonal production. We used the nonparametric Test of Wilcoxon Sum of Orders (W) to determine statistical differences in the mean density of seeds in each year of assessment for each patch of forest. Seed rain in the remaining studied during three years of study, was represented by 114 species and higher seed production occurred in 2008 (1632-seeds.m -2 in group I and 1270-seeds.m -2 in group II), mainly due to the occurrence of high production Chusquea ramosissima Lindm. , Dasyphyllum spinescens (Less.) Cabrera , Vernonanthura discolor (Spreng.) H.Rob. Only in the second year (2009) observed statistical differences in mean density between the two groups (FSEM=565.6 seeds.m -2 and FSEA=274 seeds.m -2 ; Z=1.96 and tabulated; W FSEM x FSEA =2.248). Zoochorous species predominated in the study area, and periods of increased seed production were the winter and spring. The seed rain proved important mechanism for natural regeneration of remnant forest and is affected by climate conditions and successional stage of the forest.

Morfologia de Plântulas e Controle de Patógenos em Sementes de Cordia trichotoma

This paper aims to describe the morphological development of seedlings of Cordia trichotoma, determine the influence of seed and substrate treatments in reducing the incidence of pathogens, and evaluate seed germination. A sanity test was performed using a 2×4 two-factor design (two types of processing and four seed treatment methods). The germination test represented a 2×4×3 three-factor design (two types of processing, four seed treatments, and three substrates). Germination started on the 18th day after the test was implemented for both samples. The seeds are of epigeous germination with phanerocotyledonous seedlings. The germination rate of seeds is higher when the whole perianth is removed, regardless of the substrate and treatment used. Treatment with Captan® reduced the fungal incidence of the genera Alternaria spp., Trichoderma spp., Rhizopus spp.

MAINTENANCE OF GERMINATION POWER AND GENETIC VARIABILITY OF SEEDS OF WHEAT GROWING FRONTANA

The study aimed to evaluate the germination throughout the storage time, and estimate the maintenance of genetic variability after cycles of regenerations / multiplications access wheat. The study was conducted at EmbrapaTrigo, Passo Fundo, RS. The progress of the study occurred from seeds of wheat cultivar Frontana obtained six regenerations / multiplications performed and stored over the past 29 years in BAG-Wheat. Testing of seed germination and the analysis was carried out by molecular markers. Germination of seeds has remained at satisfactory levels for over 20 years. The process of regeneration / multiplication see keeping the genetic characteristics of access.

INFLUÊNCIA DOS FATORES AMBIENTAIS NO COMPONENTE ARBÓREO DE FRAGMENTOS FLORESTAIS EM SÃO FRANCISCO DE PAULA - RIO GRANDE DO SUL

O presente trabalho teve como objetivo geral caracterizar a influencia do solo e da topografia no componente arboreo de fragmentos, no entorno do Reservatorio Divisa, na regiao dos Campos de Cima da Serra, Sul do Brasil. O levantamento da vegetacao foi realizado em quatro fragmentos, sendo em cada parcela (10 x 20 m) efetuada a identificacao e medicao da circunferencia a altura do peito (CAP) dos individuos com CAP ≥ 30 cm. Os dados de vegetacao foram submetidos a analise de agrupamento. Adicionalmente, foram obtidas as variaveis ambientais, como declividade media das parcelas e amostras de solo, na camada de 0-20 cm de profundidade. A correlacao entre os dados ambientais e de vegetacao foi realizada por meio da Analise de Correspondencia Canonica. As caracteristicas fisicas do solo nao apresentaram influencia nos grupos formados e nas especies. Nos capoes, a constante presenca do gado influenciou negativamente a estrutura do sub-bosque, assim como as caracteristicas quimicas do solo. Aluminio e saturacao por aluminio apresentaram maior influencia nas especies predominantes da mata ciliar enquanto cobre e enxofre influenciaram as especies presentes nos capoes. Especies como Araucaria angustifolia, Eugenia uruguayensis, Blepharocalyx salicifolius, Calyptranthes concinna, Lithraea brasiliensis, Myrsine coriacea, Ocotea pulchella e Sebastiania commersoniana sao adaptadas a mata ciliar, podendo ser utilizadas na recuperacao e enriquecimento desses ambientes.

Morfologia de Plântulas e Controle de Patógenos em Sementes de Cordia trichotoma / Seedling Morphology and Control of Pathogens in Seeds of Cordia trichotoma

This paper aims to describe the morphological development of seedlings of Cordia trichotoma, determine the influence of seed and substrate treatments in reducing the incidence of pathogens, and evaluate seed germination. A sanity test was performed using a 2×4 two-factor design (two types of processing and four seed treatment methods). The germination test represented a 2×4×3 three-factor design (two types of processing, four seed treatments, and three substrates). Germination started on the 18th day after the test was implemented for both samples. The seeds are of epigeous germination with phanerocotyledonous seedlings. The germination rate of seeds is higher when the whole perianth is removed, regardless of the substrate and treatment used. Treatment with Captan® reduced the fungal incidence of the genera Alternaria spp., Trichoderma spp., Rhizopus spp.

PROFILE OF CONSUMERS OF POPULAR RESTAURANT IN THE CENTER REGION OF THE RIO GRANDE DO SUL STATE

The aim of this study is to analyze the profile of consumers of the popular restaurant Dom Ivo Lorscheiter (RPDIL) located in Santa Maria - RS. Primary data were obtained through a structured questionnaire applied to 165 consumers in the restaurant during the period of 17 to 20 June 2013. The results show that most consumers are male, unmarried and aged between 16-25 years and above 56 years. Have a monthly average income between 1 and 1,5 minimum wages and are willing to pay R

Dinâmica populacional e produção de sementes de Eugenia involucrata na floresta estacional subtropical

5,00 per meal at another restaurant. We conclude that the popular restaurant meets its social role as anyone in the population may have access to subsidized meals. Moreover, the monetary benefit generated daily by the restaurant to the consumers totalized R

Storage and germination of seeds of Handroanthus heptaphyllus

1,593.75, which may be appropriated by the consumers in the form of welfare and health.