64 results about "Phosphorus deficiency" patented technology

The invention discloses a method of using organic acid secretion characteristics to detect phosphorus deficiency stress resistance ability of plants. Detected organic acid standard solution is added into air drying rhizosphere soil samples to establish a relationship model between the concentration of the organic acid standard solution and the effective phosphorus content; a phosphorus extraction ability of the organic acid secreted by a root system on the rhizosphere soil is calculated according to the relational model; an increasing proportion between a phosphorus extraction ability of organic acid secreted by a plant root system cultured in the nutrient solution prepared in a phosphorus deficiency formula on the rhizosphere soil and the phosphorus extraction ability of organic acid secreted by a plant root system cultured in the nutrient solution prepared in a normal formula on the rhizosphere soil is calculated. Then extraction cost of the organic acids secreted by the root system on the phosphorus is calculated, and the size of the phosphorus deficiency stress resistance ability of different plants is judged. The method can quantitatively detect the phosphorus deficiency stress resistance ability of the plants, and detected results of the different plants are comparable; the method is not influenced by any time and space geographical factors, and can dynamically monitor physiological change characteristics in plants for a long term.

The present invention relates to a chelated fertilizer composition for enriching Iron and Phosphorus content in agriculture / horticulture crops and plants through foliar application. The fertilizer composition is prepared using compounds comprising chelating agents and Ferric Oxide (Fe2O3). The chelation of Fe by disodium salt of Hydroxy Ethylidene Di Phosphonic Acid (Na2 HEDP) developed 17% to 18% Fe-HEDP and 31% Phosphorus pentoxide (P2O5). The final chelated fertilizer composition obtained is in powder form and is 100% water-soluble concentrate. The chelated fertilizer composition can be used to cure Iron and Phosphorus deficiency in crops and plants, increase yield with more Iron and Phosphorus content, thus reducing the risk of Iron and Phosphorus deficiency in humans.

1) A fused gene including a nucleic acid sequence which affects the biosynthesis or accumulation of neutral lipid and a phosphorus deficiency-responsive expression control sequence which is operably linked to the nucleic acid sequence and controls the expression of the nucleic acid sequence, 2) a transgenic plant which contains the fused gene, 3) a method for manufacturing vegetable fat or oil, including a cultivation step of cultivating the transgenic plant, and 4) a method for manufacturing vegetable fat or oil in which the cultivation step is a step of cultivating the transgenic plant in a phosphorus-deficient state are provided.

The invention relates to a method for determining the two-dimensional distribution of available phosphorus content. A DGT device assembled with a precipitated adsorption film into a sediment or soil medium to absorb available phosphorus in the longitudinal section of the medium; the precipitated adsorption film in the DGT device is taken out, is soaked in a color developing agent so as to be subjected to a color developing reaction; the surface gray value of the precipitated adsorption film is obtained by using a CID method; according to the established standard curve of the phosphorus adsorption capacity per unit surface area of the precipitated adsorption film and the gray value, the gray value is converted into a phosphorus adsorption capacity; and the two-dimensional distribution of the available phosphorus content in the sediment or the soil medium is calculated through a formula; the precipitated zirconium oxide adsorption film with high adsorption capacity is used for representing phosphorus, so that the method is suitable for being applied to various environment scenes of phosphorus deficiency, phosphorus application and the like, particularly under the condition of strongphosphorus content spatial distribution heterogeneity; the front and back surfaces of the adsorption film do not need to be distinguished when the adsorption film is used for loading different amountsof phosphorus to prepare mark lines; and only the adsorption film is used instead of the complete DGT device, so that operation complexity is avoided.

The invention discloses a phosphate radical transport protein TaPHT1.6 with phosphorus deficiency response as well as a coding gene and application thereof. The protein provided by the invention is (a) or (b) as follows: (a), protein consisting of amino acid sequences as shown in a sequence 2 in a sequence table; and (b), protein obtained by substituting and / or deleting and / or adding one or more amino acid residues of the amino acid sequence of the sequence 2, having the same function as the protein a and derived from the sequence 2. Experiments prove that absorption of yeast to phosphor is increased and phosphor nutritional status of the protein is improved by inducing a coding gene of the protein into a yeast phosphor absorption mutant, so that growth velocity of the protein is obviously increased.

The invention discloses a method for detecting the ability of plants to resist phosphorus deficiency stress by using the secretion characteristics of organic acids in roots. According to the relational model, the phosphorus extraction capacity of the organic acids secreted by the roots to the rhizosphere soil is calculated, and the ratio of the organic acids secreted by the roots of plants cultivated in the nutrient solution of the phosphorus deficiency formula to the phosphorus extraction capacity of the rhizosphere soil is calculated. The increase ratio of the organic acids secreted by the roots of plants cultured in the nutrient solution of the normal formula to the phosphorus extraction capacity of the rhizosphere soil, and then by calculating the cost of the phosphorus extraction by the organic acids secreted by the roots, the ability of different plants to resist phosphorus deficiency stress can be judged. size. The invention can quantitatively detect the ability of plants to resist phosphorus deficiency stress, the detection results of different plants are comparable, not affected by any time and space geographical factors, and can dynamically monitor the physiological change characteristics of plants for a long time.

1) A fused gene including a nucleic acid sequence which affects the biosynthesis or accumulation of neutral lipid and a phosphorus deficiency-responsive expression control sequence which is operably linked to the nucleic acid sequence and controls the expression of the nucleic acid sequence, 2) a transgenic plant which contains the fused gene, 3) a method for manufacturing vegetable fat or oil, including a cultivation step of cultivating the transgenic plant, and 4) a method for manufacturing vegetable fat or oil in which the cultivation step is a step of cultivating the transgenic plant in a phosphorus-deficient state are provided.