A5050644848- Plant tissue culture and regeneration
- Plant Stress Responses and Tolerance
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- Light effects on plants
- Plant responses to elevated CO2
- Plant Genetic and Mutation Studies
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- Greenhouse Technology and Climate Control
- Plant Water Relations and Carbon Dynamics
- Photosynthetic Processes and Mechanisms
- Plant Physiology and Cultivation Studies
- Plant Molecular Biology Research
- Wheat and Barley Genetics and Pathology
- Spectroscopy and Chemometric Analyses
- Spectroscopy Techniques in Biomedical and Chemical Research
- Plant nutrient uptake and metabolism
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- Plant Micronutrient Interactions and Effects
- Growth and nutrition in plants
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiffuse reflectance measurements by infrared Fourier transform spectrometryMichael P. Fuller and Peter R. GriffithsCite this: Anal. Chem. 1978, 50, 13, 1906–1910Publication Date (Print):November 1, 1978Publication History Published online1 May 2002Published inissue 1 November 1978https://pubs.acs.org/doi/10.1021/ac50035a045https://doi.org/10.1021/ac50035a045research-articleACS PublicationsRequest reuse permissionsArticle...
It is shown that diffuse reflectance techniques enable increased sensitivity to be obtained for infrared microsampling compared with the use of KBr micropellets. When nonabsorbing matrices, such as KCl, are used, detection limits less than 10 ng samples observed. Samples absorbed on graphitized substrates, which have a fairly strong general absorption but few intense bands, may also studied at somewhat reduced sensitivity. Diffuse Fourier transform spectrometry does not appear particularly...
Abiotic stress is one of the main causes crop reduction globally. Among different abiotic stresses, cold an essential factor that limits productivity worldwide. Low temperature affects growth, development and distribution agronomic species throughout world. Cold a serious threat to sustainability yields. Indeed, can cause major losses. A significant number researches have been reviewed discussed in this study order improve understanding physiological genetic nature function plant tolerance....
The properties of nanomaterials and their potential applications have been given considerable attention by researchers in various fields, especially agricultural biotechnology. However, not much has done to evaluate the role or effect zinc oxide nanoparticles (ZnO-NP) regulating physiological biochemical processes response salt-induced stress. For this purpose, some callus growth traits, plant regeneration rate, mineral element (sodium, potassium, phosphorous nitrogen) contents changes...
Artificial seeds are artificially encapsulated somatic embryos (usually) or other vegetative parts such as shoot buds, cell aggregates, auxiliary any micropropagules which can be sown a seed and converted into plant under in vitro vivo conditions. An improved artificial production technique is considered valuable alternate technology of propagation many commercially important crops significant method for mass elite genotypes. The clones multiplied by tissue culture distributed could useful...
Controlled Environment Agriculture (CEA) is a method of increasing crop productivity per unit area cultivated land by extending production into the vertical dimension and enabling year-round production. Light emitting diodes (LED) are frequently used as source light energy in CEA systems commonly limiting factor for under conditions. In current study, impact different spectra was compared with use white LED light. The various were white; supplemented ultraviolet b week before harvest; three...
Summary An experiment to measure the variation in phenological and apical development ofwinter wheat (cv. Avalon) England Scotland is described. Ten sites which ranged from Aberdeen (57·2° N), most northerly, Newton Abbot (50·6° southerly, were included survey, at each site seed was hand-sown mid-September, October November 1983. Developmental stages sampling procedures precisely defined ensure uniformity scoring by observers site. Temperatures during growing season line with long-term...
Five cultivars of tomato having different levels salt stress tolerance were exposed to treatments NaCl (0, 3 and 6 g L-1) ZnO-NPs 15 30 mg L-1). Treatments with at both L-1 suppressed the mRNA superoxide dismutase (SOD) glutathione peroxidase (GPX) genes in all while plants treated presence NaCl, showed increments expression levels. This indicated that had a positive response on plant metabolism under stress. Superior observed tolerant cultivars, Sandpoint Edkawy lowest level was detected...
Abstract Freezing of barley (Hordeum vulgare), Hordeum murinum, and Holcus lanatus was studied using infrared video thermography. In the field, ice could enter H. leaves through hydathodes. laboratory tests with barley, initially 0.4% leaf water froze, spreading in alternate strips high low freezing intensity longitudinally at 1 to 4 cm s−1, simultaneously laterally 0.3 s−1. Similar results were obtained field withH. lanatus. A distinct second, more intense, event spread slowly from margins...
Various approaches to infrared multicomponent quantitative analysis including K-matrix, multivariate least-squares, principal component regression (PCR), and partial least-squares (PLS) are compared. The advantages disadvantages of each discussed. A particular implementation the PLS method is detailed, with emphasis on methods provided for calibration optimization evaluation.
Protein secondary structure has been analyzed using a Fourier transform infrared spectroscopic method in the amide III region. Although extensive work done on protein I region (1700 - 1600 cm<SUP>-1</SUP>), not utilized past for its potential structural analysis. One of major reasons non-use vibrations is perhaps very weak signal frequency (1200 1350 cm<SUP>-1</SUP>). However, benefits are substantial. For example, water do interfere with spectrum unlike In region, better resolved into...
Summary Kernel quality characteristics, semolina milling potential, dough rheology and pasta making properties of kernels from nine fully irrigated Syrian durum wheat genotypes were observed. Protein content the exerted a significant affect on physical characteristics hardness degree kernel vitreousness, both which highly correlated with superior end‐use product. Gluten composition appeared as overall protein in determining optimum product cooking (cooking time texture). The final viscosity...
Abstract Occasionally, wheat can be exposed to overnight freezing temperatures whilst it is in the early reproductive stage and considerable frost damage occur. In vegetative stage, full expression of tolerance genes gained when plants are acclimation (4 °C). Paradoxically, during flowering has limited or no ability effectively acclimate re‐acclimate demonstrates sensitivity this stage. Using a combined approach involving infrared thermography molecular analysis, causes effects frost‐induced...
With the recent development of LED lighting systems for plant cultivation, use vertical farming under controlled conditions is attracting increased attention. This study investigated impact a number light spectra (red, blue, green and white) on growth, essential oil content lemon balm (Melissa officinalis), herb pharmaceutical species used across world. White red-rich gave best outputs in terms growth yield. For blue-rich spectra, yield was lower despite having significant photosynthesis...
Soil salinity affects a large and increasing amount of arable land worldwide, genetic agronomic solutions to salt tolerance are urgently needed. Experiments were conducted improve wheat seed performance under stress conditions after priming. An experiment was using completely randomized design four replications for germination indices in ( Triticum aestivum L. cv. Caxton). Normal primed with PEG 6000 at MPa five concentrations NaCl (0, 50, 100, 150, 200 mM) tested. Results indicate that...
A study was carried out to determine the response of open pollinated sunflower ( Helianthus annuus L. cv. Shumos) boron fertilizer. Spring and autumn grown plots were sprayed with (0, 50, 100, 150, 200, 250 mg L −1 ) in a randomized complete block design. The results showed that green Leaf area/LAI measured at end seed filling linearly related spring crop. In crop, relationship between dry matter yield linear, applications above 100 significantly increased compared control. For number...
Light is a crucial element for plant growth and production. In areas where natural light not sufficient optimal production, high pressure sodium (HPS) sources are widely used. However, HPS lamps considered very electrically efficient generating radiant heat as consequence, there has been lot of interest in replacing with new more lighting the form light-emitting diodes (LEDs). The effects three (White LED, Blue/Red LED HPS) on growth, development essential oil yield quality sweet basil bush...
Light is a crucial element for plant growth and production. High-pressure sodium (HPS) lamps are considered not very electrically efficient as they generate high radiant heat, consequence, there has been lot of interest in replacing HPS with new more lighting sources the form light-emitting diodes (LEDs). LEDs have linear photon output electrical input current, this great feature allows design arrays that match plant’s needs. In current study, light spectrum absorbance pigments extracted...