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58 results about "Photosynthetic pigment" patented technology
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A photosynthetic pigment (accessory pigment; chloroplast pigment; antenna pigment) is a pigment that is present in chloroplasts or photosynthetic bacteria and captures the light energy necessary for photosynthesis.
Quantum Dot LED's to Enhance Growth in Photosynthetic Organisms
InactiveUS20130326941A1High photoluminescence quantum yieldPromotes algae growthBioreactor/fermenter combinationsBiological substance pretreatmentsPhotosynthetic pigmentQuantum dot
Quantum dot (QD) LEDs useful for plant, algael and photosynthetic bacterial growth applications. The QD LEDs utilizes a solid state LED (typically emitting blue or UV light) as the primary light source and one or more QD elements as a secondary light source that down-converts the primary light. The emission profile of the QD LED can be tuned to correspond to the absorbance spectrum of one or more photosynthetic pigments of the organism.
Owner:NANOCO TECH LTD
Discrete three-dimensional fluorescence spectrum-based phytoplankton identification and measurement method and discrete three-dimensional fluorescence spectrum-based phytoplankton identification and measurement device
ActiveCN103868901AHigh identification and determination abilityCompact structureFluorescence/phosphorescenceMeasurement deviceLed array
The invention discloses a discrete three-dimensional fluorescence spectrum-based phytoplankton identification and measurement method and a discrete three-dimensional fluorescence spectrum-based phytoplankton identification and measurement device. The measurement method comprises the following steps: selecting a characteristic fluorescence peak which corresponds to different photosynthetic pigments as an analytic target according to fingerprint characteristics of a phytoplankton fluorescence spectrum, maintaining the phytoplankton characteristic information in the three-dimensional fluorescence spectrum to the greatest degree, fitting a characteristic spectrum of the sample according to each characteristic spectrum in a standard discrete three-dimensional fluorescence spectrum library, and inverting the types and the content of the phytoplankton in the sample. According to the measurement device, a multiband light-emitting diode (LED) array serves as an excitation light source, and a multiband light filter group serves as a band selector for receiving fluorescence. The device is simple and compact in structure, small in size and convenient to carry and is suitable for identification and measurement of field phytoplankton, the phytoplankton identification and measurement method provided by the invention is combined, so that rapid classified measurement on the phytoplankton site can be realized.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Applications of pectic enzyme for restraining algal tufa and method
InactiveCN101289246AAvoid secondary pollutionReduce dosageBiological water/sewage treatmentPectinaseMicroorganism
The invention relates to an application of pectase in restraining algal bloom and a method thereof. First water is added to the pectase powder to prepare the pectase solution with the concentration over 200 U / ml and pH value of 4.5 to 6.5 and then the pectase solution is added into an algae solution. The application and the method of the invention can lead blue algae to lose photosynthetic pigment function in a short time, thus controlling the blue algal bloom; the costs for controlling the algal bloom is low and the secondary pollution to the water can also be avoided with safety and reliability. Compared with other microorganism methods, the application and the method of the invention have good controllability and can control the algal bloom in the comparatively short time.
Owner:YUNNAN UNIV
Photosynthetic microorganism condition detection sensor
InactiveUS20140287449A1Avoid light interferenceWide dynamic rangeBioreactor/fermenter combinationsBiological substance pretreatmentsMicroorganismMicrocontroller
The present invention provides an optical probe apparatus and method for microorganism culture monitoring. The optical probe can be immersed within the microorganisms and include at least one emitter and at least two detectors that excite photosynthetic pigments in the culture medium. The optical probe can measure the culture spectral characteristics, targeting those that are an indication of the healthiness and productivity condition. The optical probe can also include a microcontroller and storage. The microcontroller can compare past measurements of the optical probe with current measurements and determine a health status of the microorganisms. The optical probe is optimized to measure spectral characteristics from the microorganism in real time. The present invention relates to a sensor tune to detect the healthiness condition of photosynthetic microorganisms.
Owner:4 OEM
Water culture method for relieving toxic effect of cadmium on tomatoes through salicylic acid and application of salicylic acid
InactiveCN108401872APromote growthLarge biomassCultivating equipmentsHorticulture methodsPhotosynthetic pigmentSalicylic acid
The invention provides a water culture method for relieving the toxic effect of cadmium on tomatoes through salicylic acid and application of salicylic acid. The water culture method includes the following steps that when tomato seedlings are in a two-leaf one-core period, 3 weeks after the tomato seedlings are moved into a water culture box for water culture, a salicylic acid water solution withthe concentration of 20-200 micromole L<-1> is used for foliage spraying, the spraying amount is based on leaf surface water dropping, the salicylic acid solution is sprayed once every day, the salicylic acid water solution is sprayed for three days in total, and then the tomatoes are subjected to 5mg L<-1>Cd(CdSO4) treatment. The accumulation of cadmium in the tomatoes can be reduced, oxidative damage and photosynthesis inhibition of cadmium stress on tomato cells can be relieved, the content of photosynthetic pigments is increased, the photosynthesis performance is improved, and the tomato biomass is remarkably increased.
Owner:SHAANXI UNIV OF SCI & TECH
Use of fluorescent protein in cyanobacteria and algae for improving photosynthesis and preventing cell damage
InactiveUS20100087006A1Improve stabilityPromote photosynthesisBacteriaUnicellular algaePhylum CyanobacteriaFluorescence
This disclosure provides a method to reduce cell damage caused by near UV light absorption of algal or cyanobacterial cultures. The algal or cyanobacterial cells are transformed to express one or more fluorescent proteins, that absorb the harmful UV or near UV wavelengths and emits wavelengths that are photosynthetically more active. The photosynthetic pigments of the transgenic algal or cyanobacterial cell culture will then absorb the photosynthetically active light emitted by the fluorescent proteins. Accordingly the harmful effects of the UV and near UV radiation are reduced and the photosynthetic activity of the algal or cyanobacterial cells is improved.
Owner:TRANSALGAE
Method for evidently lowering cadmium accumulation of brassica napobrassica and promoting growth of brassica napobrassica
InactiveCN107278651AReduce cadmium contentIncrease photosynthetic pigment contentHorticulture methodsBrassicaPhotosynthetic pigment
The invention provides a method for evidently lowering the cadmium accumulation of brassica napobrassica and promoting the growth of the brassica napobrassica. The method includes: when brassica napobrassica seedlings grow 3-4 true leaves, using melatonin with the concentration being 50-200 micromol*L<-1> to perform leaf surface spraying until leaf surfaces can drip water. The method has the advantages that cadmium content in the brassica napobrassica can be lowered evidently, the photosynthetic pigment content, antioxidant enzyme activity and biomass of the brassica napobrassica can be increased evidently, and the inhibition effect of cadmium on the growth of the brassica napobrassica can be relieved effectively.
Owner:SICHUAN AGRI UNIV
In-situ online detection device for phytoplanktons based on photosynthetic pigment fluorescence
ActiveCN106872424AFully reflect the growth statusIncrease profitFluorescence/phosphorescenceEutrophicationPhotosynthetic pigment
The invention discloses an in-situ online detection device for phytoplanktons based on photosynthetic pigment fluorescence. The in-situ online detection device comprises an LED (Light Emitting Diode) annular light source, a cylindrical water sample pool, a fluorescent detection module, a microcontrol circuit module, a casing and a bottom cover. According to the in-situ online detection device disclosed by the invention, by using fluorescence characteristics of photosynthetic pigments of different phytoplanktons, measurement of living fluorescence intensity and chlorophyll fluorescence induction kinetic parameters of the phytoplanktons under the action of exciting light with four wavelengths is realized; meanwhile, the biomass and physiological activity of the phytoplanktons can be reflected; the in-situ online detection device is suitable for real-time monitoring and early warning of eutrophication conditions in key water areas. According to the in-situ online detection device disclosed by the invention, the annular light source is adopted, the utilization rate of a light source and the illumination uniformity are considered, and a main control circuit takes STM32L151 as a core, so that the device can carry out long-term high-performance operation underwater; the in-situ online detection device is provided with the openable and closable bottom cover, so that in-situ water sampling underwater can be realized, the interference of ambient light of a water body and water current fluctuation is overcome, and further the accuracy of in-situ detection is improved.
Owner:ZHEJIANG UNIV
Use of photosynthetic pigment stabilizing agents to regulate ripening and quality in fruits and vegetables
InactiveUS20150037476A1Extension of timePrevent and slow onsetBiocideAnimal repellantsGlycineBetaine
Owner:WASHINGTON STATE UNIVERSITY
Leaf pigment remote sensing inversion method based on FOLIUM model
InactiveCN106202971AImprove inversion accuracyMonitoring Physiological and Ecological PropertiesInformaticsSpecial data processing applicationsChlorophyll bPhotosynthetic pigment
The invention provides a leaf pigment remote sensing inversion method based on a FOLIUM model. The method comprises the steps that 1, on the basis of the FOLIUM model, green leaf LOPEX93 / colorful leaf LOPEX_ZJU data concentrated hemisphere reflection and transmission spectral data, various parameters of the FOLIUM model, a minimum distance spectral fitting method and a least square method optimization method are utilized, and a method for achieving inversion of contents of various pigments corresponding to green / colorful leaves is achieved; 2, the inversion function of the FOLIUM model on all the pigments is elaborated by constructing a scatter diagram by means of measured values and inversion values of all the pigments, and the function of the FOLIUM model is compared with that of a PROSPECT-5 model; 3, comparative evaluation utilizing a accuracy evaluation function root-mean-square error, a deviation, a corrected standard deviation and variation coefficient inversion accuracy is achieved. According to the leaf pigment remote sensing inversion method based on the FOLIUM model, a green / colorful leaf hemisphere reflection and transmission spectra can be utilized for inversion of contents of photosynthetic pigments including chlorophyll a, chlorophyll b and carotenoid or non-photosynthetic pigments including anthocyanin, and compared with the PROSPECT-5 model, the inversion accuracy of total chlorophyll and carotenoid can be improved; physio-ecological characteristics of plant bodies can be monitored more accurately.
Owner:ZHEJIANG UNIV
Continuous cropping obstacle auto-toxic substance improvement method
ActiveCN106165565AAvoid toxic effectsGrowth inhibitionSoil-working methodsContinuous croppingEcological environment
The invention discloses a continuous cropping obstacle auto-toxic substance improvement method. The novel continuous cropping obstacle auto-toxic substance improvement method provided by the invention has the following beneficial effects: the application of different organic fertilizers can significantly inhibit the toxic effect of auto-toxic substances on cucumber, improves the photosynthetic pigment content and the photosynthetic rate of the cucumber, and promotes the growth of the cucumber; the reason of the organic fertilizers capable of alleviating the toxic effect of cinnamic acid on the cucumber may be that the micro-ecological environment of rhizosphere is changed; a microecological preparation can promote growth, development and advanced flowering of crops, significantly improves the single-fruit weight , the fruit number per plant and the yield per plant of the crops, realizes the increase of the yield per plant and advanced maturity, and facilitates to the formation of the early-stage yield of the crops; exogenously added cane sugar can alleviate the phenomenon of inhibition on the length of radicle of the cucumber caused by a variety of auto-toxic substances, and protects cells from toxicity of the auto-toxic substances, wherein the detoxification mechanism of the exogenously added cane sugar is to glycosylate the auto-toxic substances through glycosyltransferase; meanwhile, a set of a self-carried irrigation and plant improvement system can provide a good growth environment for the crops.
Owner:JIANGSU ACAD OF AGRI SCI
Quantum Dot-Containing Composition for Growth Enhancement in Photosynthetic Organisms
InactiveUS20170233690A1High photoluminescence quantum yieldImprove energy efficiencyBioreactor/fermenter combinationsBiological substance pretreatmentsPhotosynthetic pigmentAbsorbance
Quantum dot (QD) LEDs useful for plant, algael and photosynthetic bacterial growth applications. The QD LEDs utilizes a solid state LED (typically emitting blue or UV light) as the primary light source and one or more QD elements as a secondary light source that down-converts the primary light. The emission profile of the QD LED can be tuned to correspond to the absorbance spectrum of one or more photosynthetic pigments of the organism.
Owner:NANOCO TECH LTD
Use of photosynthetic pigment stabilizing agents to regulate ripening and quality in fruits and vegetables
ActiveUS8901039B2Extension of timePrevent and slow onsetBiocideOrganic active ingredientsGlycineBetaine
Methods and compositions to temporarily delay the ripening, maturation, senescence and pathogen infection of produce such as fruits, vegetables and ornamental plants are provided. The methods involve the application of a photosynthetic pigment and / or membrane stabilizing chemical (e.g. glycine betaine) to produce which is identified as in need of such delay. Application may be prior to harvest, at or during harvest or post-harvest.
Owner:WASHINGTON STATE UNIVERSITY
Weeding method for millet planting
ActiveCN104584950ADoes not affect normal growthIncrease plant heightBiocideAnimal repellantsBiotechnologySulfonate
The invention provides a weeding method for millet planting. The weeding method comprises the following steps: selecting millet seeds and soaking the millet seeds with brassinolide with the concentration of 0.001-1mg / L; spraying a weed killer with the concentration of 7.5mg / L in farms after seeding, and spraying the brassinolide with the concentration of 0.0125-0.4mg / L on foliages after 24 hours, wherein the weed killer is a water solution of iodosulfuron-methyl-sodium.mesosulfuron-methyl water dispersible granules and alkyl ethyl sulfonate at a weight ratio of 9 to 1. According to the weeding method, the seeds are soaked with the brassinolide solution, so that the plant height and biomass of the grown millets can be improved, and the photosynthetic pigment content in seeding leaves of the millets can be reduced to a certain extent. According to the weeding method, the seeds and seedlings of the millets are processed with the brassinolide, so that the resistance of the millets to the weed killer is improved; modernized operation in the millet planting is convenient; the application range of the existing weed killer is expanded.
Owner:SHANXI AGRI UNIV
Preparation method nanometer material loaded BiOBr/fabric and application of nanometer material loaded BiOBr/fabric to microcystis aeruginosa removal
InactiveCN109663601AGood removal effectHigh removal ratePhysical/chemical process catalystsWater/sewage treatment by irradiationPhotosynthetic pigmentCell membrane
The invention provides a preparation method of a nanometer material loaded BiOBr / fabric. Specifically, the method comprises dissolving KBr in water, mixing in fabric to obtain a mixed solution A; dissolving Bi(NO3)3*5H2O into acetic acid aqueous solution, and adding the solution into the mixed solution A, stirring the mixture at room temperature, performing ultrasonic treatment, standing and drying to obtain the prepared nanometer material loaded BiOBr / fabric. The prepared nanometer material loaded BiOBr / fabric is applied to microcystis aeruginosa removal. Under light, the nanometer material loaded BiOBr / fabric can consume O2 in culture media and produce highly oxidizing free radicals on the surface of BiOBr particles to deep degrade and oxidize photosynthetic pigments, phycobiliprotein and on-membrane polyunsaturated fatty acids and further to cause collapse of the photosynthetic function, hindering of protein synthesis and peroxidation of cell membrane lipids, thereby damaging alga cells and inhibiting growths of alga cells.
Owner:CHINA THREE GORGES UNIV
Application of NaHS in relieving stress of CuO NPs on tomato seedlings
ActiveCN111279916AReduce cumulative contentImprove toleranceBiocidePlant growth regulatorsPhotosynthetic pigmentAqueous solution
The invention provides an application of NaHS in relieving stress of CuO NPs on tomato seedlings, and belongs to the technical research field of relieving heavy metal stress of plants. According to the application, NaHS is used as an exogenous donor of hydrogen sulfide, NaHS ionizes HS- in an aqueous solution, hydrolysis of HS- generates hydrogen sulfide H2S, H2S can effectively reduce Cu accumulation in tomato seedlings and increase photosynthetic pigment content in tomato seedling leaves, thereby improving tolerance of tomato seedlings to CuO NPs.
Owner:SHAANXI UNIV OF SCI & TECH
Hyperspectral identification method for algal community structures in water bloom stage
ActiveCN111795941AColor/spectral properties measurementsEcological environmentPhotosynthetic pigment
The invention relates to a hyperspectral identification method for algal community structures in a water bloom stage, and belongs to the field of ecological environment monitoring. Firstly, a water bloom phenomenon is preliminarily judged by adopting a high-definition photo; spectral characteristic differences of reflection spectrum sensitive wavelengths of blue algae, green algae and diatom populations on the water surface are utilized to construct spectral parameters representing algae communities and population diagnosis photosynthetic pigments, the spectral parameters are applied to finaljudgment of a bloom phenomenon and quantitative estimation of algae population characteristics, and finally, extraction of algae community structures in a bloom stage is realized by calculating a relative abundance ratio of blue-green-diatom populations. The method can accurately judge the water bloom phenomenon and identify algal community structures in a water bloom stage.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Use of photosynthetic pigment stabilizing agents to regulate ripening and quality in fruits and vegetables
ActiveUS20130203598A1Extension of timePrevent and slow onsetBiocideFruit and vegetables preservationGlycineBetaine
Methods and compositions to temporarily delay the ripening, maturation, senescence and pathogen infection of produce such as fruits, vegetables and ornamental plants are provided. The methods involve the application of a photosynthetic pigment and / or membrane stabilizing chemical (e.g. glycine betaine) to produce which is identified as in need of such delay. Application may be prior to harvest, at or during harvest or post-harvest.
Owner:WASHINGTON STATE UNIVERSITY
Application of 5-aminolevulinic acid in promoting growth of chlorella kjeldahl
ActiveCN113293123AExtended logarithmic phase growth timePromote accumulationUnicellular algaeMicroorganism based processesAmino-Levulinic AcidPropanoic acid
The invention provides application of aminolevulinic acid in promoting growth of pseudochlorella kjeldahl. The application comprises the following specific steps that in the growth process of the pseudochlorella kjeldahl, 5-aminolevulinic acid is added into a culture medium once every 5-8 days, and the 5-aminolevulinic acid can be replaced by a 5-aminolevulinic acid derivative, so that logarithmic phase growth time of the pseudochlorella kjeldahl is prolonged, the increase of the unit biomass of the pseudochlorella kjeldahl is promoted, and the accumulation of photosynthetic pigments of the pseudochlorella kjeldahl is promoted.
Owner:SHANDONG SCIHEALTH BIOLOGICAL TECH CO LTD
Chemical regulation method for increasing quality and resistance of sandalwood seedlings
ActiveCN108207385APromote growthIncrease resistanceHorticulture methodsPlant protectionPeroxidasePhotosynthetic pigment
The invention discloses a chemical regulation method for increasing the quality and resistance of sandalwood seedlings and belongs to the field of plant growth regulation. The chemical regulation method includes: selecting and preparing a growth regulation agent, isolating host plants, applying the growth regulation agent, performing seedling management and the like. The chemical regulation methodhas the advantages that the ground diameter and canopy growth of the sandalwood seedlings can be promoted evidently, biomass accumulation is increased, seedling quality indexes (QI) are increased, the synthesizing of leaf photosynthetic pigment is promoted, the content of soluble sugar and soluble protein in leaves is increased, the net photosynthetic rate of the leaves is enhanced, the activityof antioxidant enzymes (catalase, peroxidase and superoxide dismutase) is increased evidently, membrane lipid peroxidation is reduced, stress resistance is enhanced, and economic benefits are increased to the maximum degree; the method is simple to operate, quick in action, practicable and the like.
Owner:RES INST OF TROPICAL FORESTRY CHINESE ACAD OF FORESTRY
Photosynthetic pigment measurement method and photosynthetic pigment measurement system for soybean leaves
InactiveCN104089895AImprove measurement efficiencyFast measurementImage analysisColor/spectral properties measurementsPattern recognitionPhotosynthetic pigment
The invention provides a photosynthetic pigment measurement method and a photosynthetic pigment measurement system for soybean leaves. The method comprises the steps of firstly obtaining an image of a soybean leaf; then partitioning the image into a plurality of units with preset specification; forming a unit matrix through the multiple units; acquiring image data of each unit; calculating the photosynthetic pigment content of each unit according to a photosynthetic pigment equation and the corresponding image data; and obtaining a photosynthetic pigment distribution diagram of the soybean leaf according to the photosynthetic pigment content of each unit and the unit matrix. The operations for cutting the leaf and respectively measuring the photosynthetic pigment content of the cut leaf by a chemical method are eliminated, and only the image of the leaf is analyzed, so that the method disclosed by the invention is extremely high in measurement speed; the average time is not longer than 20 seconds, and therefore, the problem that the conventional measurement method is low in measurement efficiency can be solved.
Owner:SICHUAN AGRI UNIV
Method for preparing quantitative standard substance of photosynthetic pigments
InactiveCN103792116AEasy to makeQuick and economical to preparePreparing sample for investigationPhotosynthetic pigmentRepeatability
The invention discloses a method for preparing a quantitative standard substance of photosynthetic pigments. The method comprises the following steps: carrying out xenicculture on limnetic algae, extracting mixed photosynthetic pigments in the limnetic algae under dark condition, and performing separating and purification, thus obtaining target photosynthetic pigments; and concentrating to obtain the enriched target photosynthetic pigments, quantifying the enriched target photosynthetic pigments, thus obtaining the quantitative standard substance of photosynthetic pigments. The method can be used for rapidly and economically preparing the quantitative standard substance at least including nine common target diagnosis photosynthetic pigments in all limnetic algae photosynthetic pigments; the quantitative standard substance is convenient to apply, good in repeatability, and high in accuracy and reliability, and can be widely applied to the field of researching phyto-group formation of phytoplankton or ultra-miniature phytoplankton.
Owner:HUBEI NORMAL UNIV
Analysis method for result of maize and soybean intercropping in Xinjiang region
InactiveCN109169071AIncrease productionFabaceae cultivationCereal cultivationAgricultural sciencePhotosynthetic pigment
The invention discloses an analysis method for the result of maize and soybean intercropping in Xinjiang region. The temperature and humidity of field between rows of crops, the plant height, the rootsystem, the SPAD value of photosynthetic pigments and the yield variation are analyzed under three cultivation modes, namely, sole cropping of soybean, sole cropping of maize and soybean-maize intercropping. The method has the advantage that the principle of the influence of the intercropping pattern on the crop yield in the drip irrigation region of Xinjiang is explored, and then, the intercropping pattern is applied to the drip irrigation region of Xinjiang to increase the crop yield in the drip irrigation region of Xinjiang.
Owner:SHIHEZI UNIVERSITY
A kind of weeding method for millet planting
ActiveCN104584950BDoes not affect normal growthIncrease plant heightBiocideAnimal repellantsWater dispersibleMesosulfuron-methyl
The invention provides a weeding method for millet planting. The weeding method comprises the following steps: selecting millet seeds and soaking the millet seeds with brassinolide with the concentration of 0.001-1mg / L; spraying a weed killer with the concentration of 7.5mg / L in farms after seeding, and spraying the brassinolide with the concentration of 0.0125-0.4mg / L on foliages after 24 hours, wherein the weed killer is a water solution of iodosulfuron-methyl-sodium.mesosulfuron-methyl water dispersible granules and alkyl ethyl sulfonate at a weight ratio of 9 to 1. According to the weeding method, the seeds are soaked with the brassinolide solution, so that the plant height and biomass of the grown millets can be improved, and the photosynthetic pigment content in seeding leaves of the millets can be reduced to a certain extent. According to the weeding method, the seeds and seedlings of the millets are processed with the brassinolide, so that the resistance of the millets to the weed killer is improved; modernized operation in the millet planting is convenient; the application range of the existing weed killer is expanded.
Owner:SHANXI AGRI UNIV
Method for improving quality of facility Chinese cabbages before harvesting
InactiveCN113141905APromote growthLarge biomassLeaf crop cultivationHorticulture methodsChlorophyll bPhotosynthetic pigment
The invention provides a method for improving the quality of facility Chinese cabbages before harvesting, and belongs to the technical field of plant cultivation. The method comprises the following steps: 5-15 days before harvesting of Chinese cabbages, white light is adopted as a basic light source, and blue light or UV-A is overlaid and radiated on the Chinese cabbages. According to the method, the growth of the Chinese cabbages can be promoted, the biomass of the Chinese cabbages is increased, the total amount of photosynthetic pigments (chlorophyll a and chlorophyll b) of the Chinese cabbages is increased, the content of total phenols, flavonoids and anthocyanin of the Chinese cabbages is increased, the oxidation resistance is improved, and the content of nitrate of the Chinese cabbages is reduced.
Owner:INST OF URBAN AGRI CHINESE ACADEMY OF AGRI SCI
Combined application of methyl jasmonate and Si<4+>
ActiveCN111616147AIncrease nutrient intakeAvoid damageBiocidePlant growth regulatorsBiotechnologyPhotosynthetic pigment
The invention discloses application of methyl jasmonate and exogenous Si<4+> in resisting Cd<2+> stress of tomato seedlings, and belongs to the field of vegetable planting safety. Through combined application of methyl jasmonate and Si<4+>, the accumulation of Cd<2+> in tomato seedlings can be reduced, the photosynthetic pigment content is also increased, and the inhibition of photosynthesis by Cd2+ stress on tomato seedlings is alleviated. In addition, under the combined action of exogenous Si and methyl jasmonate, the growth inhibition of Cd<2+> on tomato seedlings is remarkably relieved inthe process of promoting the growth of tomatoes under the Cd<2+> stress, so that the root length, the plant height, the dry weight and the fresh weight are obviously increased.
Owner:SHAANXI UNIV OF SCI & TECH
Method for improving drought resistance of peonies for oil with jasmonic acid
InactiveCN110972798APromote photosynthesisImprove featuresCultivating equipmentsHorticulture methodsPhotosynthetic pigmentPropanedial
The invention discloses a method for improving drought resistance of peonies for oil with jasmonic acid. The method for inducing drought resistance of peonies for oil with jasmonic acid comprises thefollowing steps: 1) selecting annual seedlings of peonies for oil with consistent growth and no pests in October and cultivating the seedlings; 2) cultivating the seedlings in a greenhouse at room temperature until May of the following year, during which normal moisture management is carried out; 3) spraying jasmonic acid on the whole plant of peonies for oil until liquid drops from upper and lower surfaces of leaves, with one spray every 3 days, a total of two sprays, and then obtaining the peonies with drought resistance for oil. According to the invention, exogenous induction with JA in different concentrations is adopted during growth of the peonies for oil, thereby significantly improving contents of osmotic adjustment substances and photosynthetic pigments (chlorophyll a, chlorophyllb, and carotenoids) and reducing content of malonaldehyde in the peonies for oil under drought stress, reducing cell membrane lipid peroxidation, promoting photosynthesis of 'Feng Dan' peonies, and enhancing defense ability against drought stress.
Owner:HENAN UNIV OF SCI & TECH
Method for improving drought resistance of oil paeonia suffruticosa by adopting jasmonic acid
InactiveCN111903420ASolve the problem of poor growthPromote photosynthesisCultivating equipmentsHorticulture methodsBiotechnologyPaeonia suffruticosa
Owner:HENAN UNIV OF SCI & TECH
Bagging method for changing appearance of cucumber fruits and/or improving special flavor quality of cucumber fruits
InactiveCN106665215AChange appearance qualityChange flavor qualityPlant protective coveringsPhotosynthetic pigmentPulp and paper industry
The invention discloses a bagging method for changing appearance of cucumber fruits and / or improving special flavor quality of cucumber fruits. The bagging method comprises the steps that kraft paper bags are adopted to serve as bags; the kraft paper bags are of double-layer structures, outer layers are yellow, and inner layers are black; the density of kraft paper forming the kraft paper bags is 58.76 g / m<2>, and the thickness is 0.0804 mm; the kraft paper bags are rectangular, the length of the kraft paper bags is 25-35 cm, and the width of the kraft paper bags is 10-15 cm; the bagging time is from the day of female flower blooming to cucumber maturity. The bagging method is convenient to operate, the appearance of cucumber fruits is changed, and the photosynthetic pigment content in the fruits is decreased. The bagging method makes the flavor quality of the fruits changed, the relative content, of main flavor substances 2E, 6Z-nonadienaldehyde and 2E-hydroxynonenal in ZN16, of the cucumber fruits is increased, aromatic substance varieties in the ZN16 are decreased, and the proportion of aldehydes materials in total aromatic substances is obviously improved.
Owner:CHINA AGRI UNIV
A method for detecting photosynthetic pigment content in rape silique peel
InactiveCN106596425BThe result is accurateReliable resultsColor/spectral properties measurementsPhotosynthetic pigmentCost savings
A method for determining the photosynthetic pigment content of oilseed rape pod skin includes the steps of (1), selecting green oilseed rape pods and measuring the superficial area of the pod skin and weighing the pod skin accurately; (2), scanning the superficial area of the pod skin by a Yaxin-1241 leaf area meter and converting the superficial area into a value I and a value F; then, determining the total content Cabx of photosynthetic pigments of the pod skin, the total content Cab of chlorophylls, the content Ca of chlorophylls a and the content Cb of chlorophylls b; setting C=Ki I or C=Qi F, wherein C refers to pigment content, Ki=C / I and Qi=C / F; determining coefficients Ki and Qi according to the determined value C, value I and value F; (3), scanning the superficial area of the oilseed rape pod skin to be determined by the leaf area meter, converting the superficial area into a value I and a value F, and computing the photosynthetic pigment content Cabx, Cab, Ca and Cb of the pod skin to be determined according to the value I, the value F and the coefficients Ki and Qi. The method has the advantages of accurate and reliable results, more samples, fewer sampling errors, convenience in operation, environmental safety and detection cost saving.
Owner:NORTHWEST A & F UNIV
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