A5081229533- Plant Stress Responses and Tolerance
- Growth and nutrition in plants
- Soil Management and Crop Yield
- Seed Germination and Physiology
- Leaf Properties and Growth Measurement
- Plant responses to water stress
- Crop Yield and Soil Fertility
- Clay minerals and soil interactions
- Rice Cultivation and Yield Improvement
- Photosynthetic Processes and Mechanisms
- Plant Water Relations and Carbon Dynamics
- Magnetic and Electromagnetic Effects
- Plant Micronutrient Interactions and Effects
- Plant and Biological Electrophysiology Studies
- Seedling growth and survival studies
- Genetics and Plant Breeding
- Soybean genetics and cultivation
- Plant Growth Enhancement Techniques
- Geochemistry and Geologic Mapping
- Soil Geostatistics and Mapping
- Flowering Plant Growth and Cultivation
- Soil and Environmental Studies
- Soil and Unsaturated Flow
- Heavy metals in environment
- Humic Substances and Bio-Organic Studies
Universidade Federal de Viçosa
2021-2025
Universidade Federal Rural de Pernambuco
2011-2019
Brazilian Agricultural Research Corporation
2015
ABSTRACT Chlorophyll a fluorescence is very useful tool in ecophysiological studies to analyze the photosynthetic performance of plants under biotic and abiotic stresses. This research aimed evaluate parameters chlorophyll a, contents b total, carotenoids Atriplex nummularia cultivated water stress (37 70% field capacity) salt (irrigation with electrical conductivity 0, 5, 10, 20, 30 40 dS m-1), besides two sources salts: NaCl mixture salts Ca2+, Mg+2, K+, Na+ Cl-, 6 x 2 factorial, 4...
ABSTRACT The use of sequential extraction methods is a common practice for analysing the availability potentially toxic elements in soils and sediments. However, simultaneous presence oxidisable reducible minerals acid sulfate with thionic horizon raises questions about accuracy these methods. This study focused on comparative evaluation two schemes—the modified BCR method (four steps) Tessier (six ‐ Delta Doce River region, Espírito Santo, Brazil. With particular attention to jarosite,...
Water quality affects soils by promoting their degradation the accumulation of salts that will lead to salinization and sodification. However, magnitude these processes varies with soil attributes. Saturated hydraulic conductivity (Ksat) is rate at which water passes through saturated soil, fundamental determining movement profile. The Ksat may differ from according sodium adsorption ratio (SAR), electrical (ECw), texture, clay mineralogical assemblage. In this study, an experiment vertical...
ABSTRACT The tools that evaluate the salinity effects on plants have great relevance as they contribute to understanding of mechanisms tolerance. This study aimed gas exchanges and contents photosynthetic pigments in bell peppers cultivated with saline solutions (0, 1, 3, 5, 7 9 dS m-1) prepared using two sources: NaCl a mixture Ca, Mg, K, Na Cl salts, randomized blocks 6 x 2 factorial scheme 4 replicates, totaling 48 experimental plots. net photosynthesis (A), stomatal conductance (gs),...
ABSTRACT Atriplex nummularia is a halophyte of great importance in the recovery saline soils and considered as model plant to study biosaline scenarios. This aimed evaluate biometric parameters, biomass production accumulation ions A. grown under abiotic stresses. Cultivation was carried out Fluvic Neosol for 100 days, adopting two water regimes: 37 70% field capacity. Plants were irrigated with solutions containing types salts (NaCl mixture NaCl, KCl, MgCl2 CaCl2) at six levels electrical...
Phytoremediation is an efficient technique for the reclamation of salt-affected soils by growing plants. The present study aims to evaluate intercropping halophyte Atriplex nummularia Lindl. with naturally occurring species (Mimosa caesalpiniifolia Benth, Leucaena leucocephala (Lam.) de Wit and Azadirachta indica A. Juss.) adapted semiarid regions as a management capable enhancing phytoremediation capacity these species. A field experiment was conducted in randomized block contained four...
Objetivou-se avaliar a extração de sais pela Atriplex cultivada em solo salino sódico sob condições estresse hídrico e comparar propriedades do antes após seu cultivo. O experimento foi desenvolvido casa vegetação durante 134 dias, com cultivo vasos 20 kg quatro níveis umidade (35, 55, 75 95% da capacidade campo), um tratamento controle (sem cultivo), montado blocos casualizados, oito repetições. As altas concentrações Ca2+, Mg2+, K+ e, especialmente Na+ Cl- nas folhas nummularia, associadas...
A composição iônica da solução do solo é de grande relevância para o monitoramento disponibilidade nutrientes e manejo adubação tal como, também, processos contaminação ambiental. Assim, métodos mais viáveis que estimem a desta solução, são bem aceitos na literatura. Esta pesquisa objetiva avaliar desempenho extração como: via pasta saturação, extratores munidos cápsulas porosas relações solo:água 1:2; 1:5 1:10, com sem processo filtragem. Utilizaram-se amostras Neossolo Flúvico em colunas...
Atriplex nummularia is a halophyte widely employed to recover saline soils and was used as model evaluate the water potentials in soil-plant system under drought salt stresses. Potted plants grown 70 37% of field capacity irrigated with solutions NaCl mixture NaCl, KCl, MgCl2 CaCl2 reproducing six electrical conductivity (EC): 0, 5, 10, 20, 30, 40 dS m-1. After 100 days, total (Ψw, plant) osmotic (Ψo, at predawn midday Ψo, soil, matric potential (Ψm, soil) Ψw, soil were determined. The type...
ABSTRACT Soil salinity directly affects plants, interfering in the emission of fluorescence, and promoting degradation photosynthetic pigments. Thus, estimating damage to apparatus caused by saline water is an important tool detect abiotic stresses. For this purpose, sorghum plants were cultivated a greenhouse irrigated with two sources (NaCl salt mixture) six levels electrical conductivity (EC) (0, 2.5, 5, 7.5, 10, 12.5 dS m-1), forming 6 × 2 factorial randomized blocks four repetitions. At...
ABSTRACT The study of the water energetic status under saline condition and its impact on development cowpea is extreme importance, since this crop food base in many parts world. An experiment was carried out a greenhouse from March to May 2014 using cultivar IPA 206 Fluvisol collected municipality Pesqueira, PE, Brazil. Waters with six levels electrical conductivity (0; 2.5; 5; 7.5; 10; 12.5 dS m-1) formulated NaCl salt mixture were used. conducted randomized blocks 6 x 2 factorial...
The relationship between nitric oxide (NO) and up-regulation of the antioxidant system ABA-mediated in maize was evaluated under long-term drought.Two genotypes with contrasting drought tolerance (BRS1010 -sensitive DKB390 -tolerant) were exposed to two soil water levels, field capacity (FC) deficit (WD) at pre-flowering.After 12 days these conditions, plants irrigated level kept FC until harvest.The BRS1010 showed lower catalase activity reduced levels NO, whereas ABA malondialdehyde (MDA)...
Drought and soil salinity are the main abiotic stresses in semiarid regions of world. This study aims to evaluate effect water tensions generated by reduction moisture salt on leaf potential cowpea (Vigna unguiculata L. Walp). The experiments were conducted a randomized complete block design, with 6 × 2 factorial arrangement consisted six (0.025, 0.265, 0.485, 0.705, 0.925, 1.145 MPa) two tension [...]
The energetic state of water in the soil-plant system is a relevant theme ecosystems affected by abiotic stress. Thus, present study aimed to investigate potential soil and sorghum grown Fluvisol irrigated with increasing electrical conductivity different ionic compositions. Solutions were prepared compositions (NaCl salt mix) six levels (0, 2.5, 5.0, 7.5, 10, 12.5 dS m−1), randomized block design 4 repetitions. leaf osmotic determined 60 days after sowing. was measured saturation paste...