179results about How to "Short breeding time" patented technology

The invention discloses a method for breeding new corn strain by cross inducing parthenocarpy material, belonging to the crop breeding field. The invention mainly uses the Jigao inductive line No. 3, which can cross inducing with high frequency parthenocarpy to generate autocopulative line, to induce following generation to generate haploid after the corn group or hybrid pollination, then forms stable autocopulative line through natural or artificial duplication with haploid. Compared with normal method, the invention is characterized by the simplified breeding process, shortened time, increased efficiency, and autocopulative line of high purity.

The invention provides a method for rapidly identifying resistance to verticillium wilt of eggplant. The method comprises the following steps of: accelerating germination and sowing of eggplant seeds, seedling culturing, preparation of a verticillium wilt spore suspension, treatment of pathogenic bacteria infection and incidence investigation. According to the invention, eggplant seedlings are infected with verticillium wilt in a manner of soaking and infecting seedling roots by a bacteria solution, and the eggplant seedlings are infected after being uniformly cultured in a substrate until achieving a state of one seedling with two leaves, so that the growth vigor and size of the eggplant seedlings are easy to control, and the consistency and reliability of an identification result are ensured. By adopting the appropriate verticillium wilt substrate and adjusting the concentration of the verticillium wilt suspension, the method has the advantages of good infection effect, high survival rate of the infected seedlings, uniform inoculation and rapid incidence. According to the invention, only different plants with consistent growth vigor need to be soaked in the bacteria solution after root cutting, so that the operation is simple and convenient, the seedling culture time is short, and the method is particularly suitable for identification of resistance to verticillium wilt of eggplant breeding materials in batches.

A cuttage method for culturing the sapling of lectuce tea tree features that branch of existing lectuce tea tree is used as scion, and includes such steps as choosing scion, spraying liquid, cutting, immersing in liquid, cuttage and management. It has high survival rate (more than 80%).

The invention relates to a method for planting seed in water, especially uses crop water induce liquid. The invention uses seeding disc, base medium and crop water induce liquid to replace present nourishment to plant seed in water, to improve the yield and quality, and increase the nourishment content. The invention can transplant the seed with two blades and one corn. The inventive method can be processed in room while the root system is developed to absorb nourishment quickly. The invention has simple operation, with the application for the plant with one blade and one corn, and four blades and one corn.

The present invention provides a television apparatus that can reproduce and show a program when the program is stopped without a user performing troublesome operations even when the user is occupied with a sudden phone call or an unexpected visitor while he/she is watching television. A volume comparator starts recording of the program, which is currently being watched, by using a recording apparatus when a set volume value is lower than a threshold value or is set to a sound cancelling mode. Also, when a newly set volume value is higher than the threshold value or the sound cancelling is released, the volume comparator stops the display of the program that is currently being watched and starts reproducing display of the recorded program by returning to the recording start time point.

The invention discloses a rapid rhubarb seedling growing method. The rapid rhubarb seedling growing method includes the following steps: 1), building a seedling growing pool or picking a seedling growing basin and adding water; 2), picking and sterilizing a seedling growing plate, placing a seedling growing base material into the seedling growing plate, and sowing pre-treated rhubarb seeds into the seedling growing plate to acquire the seedling growing plate subjected to sowing, wherein the seedling growing base material comprises, by weight, 50-70% of peat and 30-50% of perlite; 3), placing the seedling growing plate subjected to sowing in the step 2) into the seedling growing pool or seedling growing basin in the step 1) for cultivation, and after seedling emergence, adding fertilizer into water in the seedling growing pool or seedling growing basin once every ten days until nitrogen concentration is 150-250g/L, phosphorus concentration is 10-40g/L and potassium concentration is 200-300g/L; 4), completing cultivation after the diameters of rootstocks of rhubarb seedlings are not less than 1cm and roots and the rootstocks are 5-10cm in length. The rapid rhubarb seedling growing method is simple and convenient to operate, high in seeding emergence rate, short in time, low in cost and good in economic benefit, and the rhubarb seedlings grown by the method grow rapidly, orderly and healthily.

The invention discloses a method for the bickiron inoculation of buds symbiotic to root fungi for culturing the seedlings of Chinese chestnut. The method adopts the methods of the bickiron graft of bud seedlings and the root-pruning inoculation of root fungi for breeding the container seedlings of Chinese chestnut of which the root system is symbiotic to the root fungi, prior diluted Chinese chestnut mycorhiza liquid or a prior Chinese chestnut mycorhiza agent is adopted, and inoculation is carried out after root pruning; on one hand, side roots have flourishing growth; on the other hand, the root system is symbiotic to the root fungi, and then the container seedlings are transplanted into a greenhouse for large-scale culture; and the seedlings after being cultured successfully are directly transplanted into a plowland, the seedling raising time is quick, the survival rate of the seedlings is high, and the growth of the seedlings is robust.

The invention discloses a cured tobacco seedling culturing method, which is characterized in that: straw coal substrates made of cured tobacco straws instead of the conventional substrate are filled into holes on a seed tray for seedling culturing; in a period lasting from sowing to the growth of tobacco seedlings to seedlings with 3-4 leaves, seedling culturing on moist trays is adopted; and seedling culturing in floating trays is adopted from the stage of 3-4 leaves to a seedling period. Compared with the prior art, the method has the advantages of low cost, good seedling culturing effect, shorter seedling culturing time and capability of recycling waste cured tobacco straws.

The invention discloses a xanthoceras sorbifolia culture method, which relates to the xanthoceras sorbifolia rapid propagation technology and belongs to the technical field of plant tissue culture. The xanthoceras sorbifolia culture method solves the problem of phenomenon of one fruit of thousands of flowers of the xanthoceras sorbifolia. Therefore, the xanthoceras sorbifolia has high seedling differentiation rate, high propagation speed and high seedling yield. The xanthoceras sorbifolia realizes the micropropagation at the speed of several times each month, and the resource regeneration and the utilization of the micropropagation are reached through tender stem or stem tip culture. The xanthoceras sorbifolia culture method has the beneficial effects that the seedling development is healthy and strong, the planting survival rate is high, the seedling raising is early, the growth period is long, the seedling lignification degree is improved, the seedling cold resistance and overwintering capability is enhanced, the seedling raising time is short, the cost is low, and the seedling yield in the unit area is high.

The invention discloses a method for producing edible sunflower hybrid seeds. The method comprises the following steps of: (1) culturing parents a, namely planting an edible sunflower variety a which has high combining ability and good economic characteristic in a production site; and through 5 to 8 generations of sister hybridization, selecting strains which have strong adaptability and high purity without degeneration after the sister hybridization as the parents a; (2) culturing parents b, namely planting an edible sunflower variety b which has the same flowering phase, maturation phase and strain height as those of the parents a, and has disease resistance and seed size complementary for those of the parents a; and after 5 to 8 generations of self-copulation, selecting the strains which have the high combining ability as the parents b; and (3) producing hybrid seeds, namely planting the parents a and the parents b at the same time; and mutually pollinating the parents a and the parents b in the flowering phase in order to culture the hybrid seeds. The method for producing the edible sunflower hybrid seeds has the characteristics of simple processes, low cost, randomly selected hybrid combination and strong combination advantages. The hybrid seeds have the advantages of disease resistance, high yield, good quality, strong growth potential and the like.

The invention relates to the technical field of plant genetic engineering, and particularly relates to application of DRK protein and a coding gene thereof in drought resistance of plants. After expression of the DRK gene is inhibited, the growth of mutant plants under the drought treatment condition is obviously superior to that of wild plants, and the water loss rate and the leaf wilting degreeare obviously lower than those of the wild plants, so that the drought resistance of the plants can be remarkably enhanced by inhibiting the function of the gene, gene resources are provided for cultivating and improving new varieties of drought-resistant plants, and a theoretical basis is provided for clarifying the molecular mechanism of MAPKKK protein kinase in plant drought stress signal response.

The invention discloses a seedling raising method of polygonum. The method comprises the following steps of: selecting six-month or annual branches of robust, disease-free and pest-free mother plants as cuttings; cutting into small pieces, and carrying cutting treatment; selecting flat-terrain, loose, fertile, conveniently-irrigated and well-drained sandy loam or loam as a cuttings bed, and plowing the soil and applying a basic fertilizer in a month before cutting; ditching; disinfecting a seedbed; cutting; tightly inserting the treated cuttings in the surface of a ditch according to the plant and row spacing of 3cm * 8cm, with buds up, and the lower end buried into the soil, irrigating normal root water thoroughly; top dressing; topping when cutting seedlings germinate sprouts about 10cm long, keeping the height of the seedling about 20cm, and the length of the sprouts 15cm; transplanting when the seedlings are raised about 40 days in spring or about 60 days in autumn; and firstly irrigating the seedbed thoroughly on the day before lifting. The seedling raising time is short, the survival rate is high, and the yield is stable.

The invention discloses a novel beak-shaped litchi planting method capable of achieving high and stable yield. The novel beak-shaped litchi planting method includes the steps of a), selecting and treating cuttings, namely selecting strong branches from seed trees, cutting the branches to form cuttings, soaking to sterilize roots of the cuttings, and then soaking the roots of the cuttings in a root inducing agent; b), treating seedbed fields, namely deeply ploughing seedbed soil, applying one layer of red clay and peat soil on the seedbed soil, scarifying the seedbed soil again, sterilizing, applying ripe cow dung, superphosphate and a potash fertilizer for 3-5 days after sterilization, watering to drench the seedbed soil and sterilizing; c) performing litchi cutting and management, namely inserting the litchi cuttings into the seedbed soil obliquely, spraying quick lime and ABT rooting powder after cutting, watering seedbeds every day, sterilizing after 10 days, spraying nutrient solution for every 10 days after sterilization, and cultivating till seedlings emerge. By the aid of a cuttage method, the novel beak-shaped litchi planting method is short in seedling time, high in survival rate, low in cost and capable of keeping excellent characteristics of female parents, accelerating litchi raising, shortening fruit bearing period and increasing litchi yield.

The invention discloses a method for obtaining an excellent clone through fiber bamboo subterraneous stem in-situ multiple mutagenesis. The method comprises the steps that a subterraneous stem of fiber bamboo is selected; an internal irradiation mutagenic agent is selected to be prepared into mutagenic agent solutions separately; a chemical mutagenic agent ethylmethane sulfonate is selected to beprepared into mutagenic agent solutions separately; a stainless steel continuous syringe is used for filling different segments of the selected subterraneous stem of the fiber bamboo with the internalirradiation mutagenic agent of different concentrations, and injection ports are sealed by non-sticking adhesive tapes; after 30-40 days, the stainless steel continuous syringe is used for filling the different segments of the selected subterraneous stem of the fiber bamboo with the chemical mutagenic agent solution, and the injection ports are sealed by non-sticking adhesive tapes; after earthing is performed for 60-90 days, different mutagenic buds on the segments, subjected to multiple treatment of the internal irradiation mutagenesis and mechanical mutagenesis, of the subterraneous stem are germinated into bamboo, and through screening and underground root dividing propagation, the clonal new germplasm or new species of the fiber bamboo with excellent traits.

The invention relates to a breeding method of red glutinous rice, which comprises the following steps: (1) performing hybridization of black glutinous rice with species of red-seed husk non-glutinous rice to obtain single-cross F0, planting to obtain single-cross F1 hybrids; (2) performing hybridization by taking high-yield white glutinous rice species of Gui No. D1 as a female parent, and taking single-cross F1 hybrids obtained by hybridization of Yulin black glutinous rice with red-seed husk non-glutinous rice species of Huanghongzhan as a male parent to obtain multiple-cross F0; (3) planting the multiple-cross F0 to gain F1 which all have black seed husk; planting the F1 to gain F2, separating the F2 to obtain plants with black, red or white seed husk, selecting plant seeds with red seed husk and glutinous endosperm for planting; performing selfing for 6-8 generations to obtain the required red glutinous rice species. The rice bred by the method of the invention has good glutinous property, good growing vigour during field growing, strong stems, red coarse rice, and comparable yield to current high-yield white glutinous rice.

The invention discloses a cutting propagation method of ricinus communis, which belongs to the technical field of crop propagation. The method comprises the following steps of: cutting ricinus communis branches of 1-2 years old, retaining one leaf with the leaf area being 20%-25% of the original leaf area on each branch, dipping the cut branches with rooting powder and then inserting into a seedling bed, keeping the air humidity to be 100% in a cutting seedling greenhouse during the period from cutting to rooting. The method provided by the invention overcomes difficulties of the ricinus communis such as large areas, fast moisture evaporation, hollow stems, high lignification extent and difficult rooting; the inarched ricinus communis branches are capable of successfully rooting within a short time of 40 days more or less; the rooting rate is 53%-86.7%, and speediness, orderliness, strong growth vigour and good growth can realized in rootage; the propagation time is short, the operation is concise and easy to master. The invention provides a novel method for protecting the ricinus communis resource, which is capable of keeping excellent individual plants of the ricinus communis and shortening the propagation time. The application of the method provided by the invention in the propagation of female individual plants of the ricinus communis is particularly significant in heterosis utilization.

The invention discloses a method for breeding high-protein peanut quality, which selects germplasm materials with good comprehensive characters and high-protein content to assemble parental combination; single plant with good comprehensive character is selected by breeding goal in early segregation generation, which is a high-yield pressure screening; the single plant with good comprehensive character is selected by the same standard in different segregation generation and the protein content of each single plant with good comprehensive character is measured; stable high-protein variety or strain with good comprehensive character is acquired through double pressure selection of multi-generation high-yield and high protein as well as directional breeding. The method for breeding high-protein peanut quality can carry out direct selection of protein content character; the invention is characterized by short breeding period, little blindness and high breeding efficiency. Peanut variety with high-protein content and good comprehensive character can be bred, which has good economic and social benefit.