51results about How to "Consistent traits" patented technology

The invention relates to a multilayer compound eccentric-wear-preventing continuous sucker rod and a manufacturing device and a manufacturing method thereof. The sucker rod is characterized in that one section or several sections of the external surface of a fiber reinforced resin matrix composite rod body are respectively covered with a thermosetting wear layer; each thermosetting wear layer is made from one of polyurethane, a fluorocarbon coating, modified epoxide resin, vinylester resin, unsaturated polyester and phenolic resin; by adopting a manufacturing technology of multilayer composite winding and pultrusion or weaving and pultrusion, an internal layer of longitudinal fibers, an intertwining layer or a weaving layer and an external layer of longitudinal fibers are formed from interior to exterior in sequence; the manufactured rod body has a continuous length of 0-5000m. The sucker rod has the beneficial effects that the radial strength and the axial compressive strength are enhanced; the corrosion resistance and the eccentric wear resistance of the thermosetting wear layers are improved by 30%; the maximum temperature tolerance of the thermosetting wear layers is up to 190 DEG C; meanwhile, the bonding between an sucker rod body and each thermosetting wear layer is greater in length and quite high in strength, so that the slippage and the layering of an eccentric-wear-preventing layer from the surface of the sucker rod in the normal operation of an oil well are avoided.

The invention mainly aims to provide a clonal tea tree breeding method comprising the following steps: a, selecting a garden; b, trenching and grooving; c, cutting and seedling growing; d, nursery garden management; tea seedling using the seedling growing method is high in cutting survival rate, and breeding inherent characteristics can be well kept, so progeny properties are consistent, breeding period and growth vigor are tidy, and new shoot size, shoot tenderness0keeping ability and colors are close; subsequent mechanical tea harvesting is convenient, and primary processing technology can be standardized; the breeding method is simple, and easy to operate.

The present invention discloses the fast germchit propagating method for flameray gerbera cut flower, and aims at providing one kind of fast propagating method of flameray gerbera germchit with less germchit variability, consistent characteristic and robust growth. The method includes cutting the floral receptacle of flameray gerbera bud as the explant, cutting the floral receptacle into small blocks, culturing in inducing culture medium at proper lighting and temperature to grow indefinite bud, culturing the indefinite bud in proliferating culture medium at proper lighting and temperature to grow bush bud, cutting the bush bud into single seedlings, culturing the seedlings in rooting culture medium at proper lighting and temperature to induce rooting, and finally transplanting the rooted seedling in seedling bed. The present invention is applied in propagation of flower.

The invention discloses a breeding method for clonal DH33-27 variety of Eucalyptus urophylla*E.grandis. The method comprises the following steps: firstly, taking Eucalyptus urophylla U16 serving as a female parent and Eucalyptus grandis G33 serving as a male parent as parents; performing emasculation and bagging, pollen collection, hand pollination, cap bag removal, seed collecting and sowing and breeding to realize consistent character expression and stable inheritance. The clonal DH33-27 variety of Eucalyptus urophylla*E.grandis which is not subjected to segregation of character has the variety characteristics that the leaves are lanceolate, terminal buds are green, veins are obvious, seedling stems are slightly red, tree trunks in the early stage is brownish red, the upper parts of the tree trunks are cyan, and the tree trunks are completely peeled in the later period; the clonal DH33-27 variety of Eucalyptus urophylla*E.grandis has the characteristics of high general performance, straight stem shapes, order forest form, small branches, high annual average amount of growing stock and obvious economic benefit, is free of plant diseases and insect pests and suitable for large-scale cultivation promotion.

The invention provides a crossbreeding method of the mud crab. Inter-species different geographic populations of the mud crab are hybridized and bed to obtain artificial hybrid fry of the mud crab. The crossbreeding method of the mud crab inherits fine traits of both parents and has the advantages that stress resistance is high, breeding survival rate is high and the like. The bred fry of the mud crab have fitting traits and have better stress resistance than the fry of the mud crab in the sea. The bred fry of the mud crab can be widely used for breeding of fine breeds of the mud crab, and growth speed, stress resistance and breeding survival rate of the mud crab are increased. The crossbreeding method of the mud crab is reasonable in design, simple to operate, highly operable and applicable to production.

The invention discloses a breeding method for a Eucalyptus urophylla*E.grandis clone DH32-43 variety. Firstly, a female parent U16(Eucalyptusurophylla) and a male parent G46(Eucalyptusgrandis) are taken as parents; and the Eucalyptus urophylla*E.grandis clone DH32-43 variety which is consistent in phenotypic expression, stable in inheritance and does not have segregation of character is obtained after castration and bagging, pollen collection, artificial pollination, removal and bagging, seed collection and sowing, and breeding. The variety is characterized in that the leaf base of nursery stock is slightly wide in a seedling stage, blades are sharp and long, edges are in the shape of microwaves, terminal buds are dark red, veins are clear and do not protrude, and stems of seedlings are longer than other products in a young seedling stage; and the Eucalyptus urophylla*E.grandis clone DH32-43 variety has the characteristics of straight trunk shape, uniform forest form, small branches, no diseases and insect pests, large annual average amount of growing stock and obvious economic benefit, and is suitable for large-area and wide-range promotion and planting.

The invention discloses a method for breeding novel variety of Brassica oleracea by using two DH (dihaploid) lines, comprising: hybridizing a cytoplasmic male-sterile line DHCMS08-5-3-6-9 trans-bred with a Brassica oleracea DH line as a female parent and the Brassica oleracea DH line DH05X-1-5-9-8 line as a male parent to prepare DHCMS08-5-5-6-9*DH05X-1-5-9-8 hybrid first-generation combination, named as Qingan 1562. The method of the invention is a method to breed a mid-early maturity novel variety of Brassica oleracea by using two DH lines, a novel hybrid first-generation variety of Brassica oleracea is bred through DH liens with genotype purity of 100% created by culturing isolated microspores of Brassica oleracea, the novel hybrid first-generation variety of Brassica oleracea has highly uniform economic traits and completely exhibited target traits, and the breeding of disease-resistant high-quality high-yield variety breeding targets is achieved.

The invention relates to a sealwort sterile rooting breeding method in a test tube. The method comprises the following steps: (1) sealwort seed bud selection and sterilization; (2) callus induction; (3) subculture proliferation culture; (4) seedling hardening and rooting; (5) sand bed provisional planting. The sealwort sterile rooting breeding method has the beneficial effects that the sealwort seedling culture period is short; a great number of sealwort seedlings can be formed in five months; the tissue culture cost can be greatly reduced by using multiple shoot proliferation and differentiation; the culture period is shortened; the tissue culture sealwort seedling growth condition is regular and uniform; the medicine effect quality is unified; the breeding speed is high; the influence byexternal environmental factors is avoided; the production can be performed in four seasons in one year; the sealwort tissue culture seedlings have uniform properties; the excellent properties of parents and the growth period consistency can be maintained; the purity of the sealwort tissue culture seedlings is higher; the variation is little; the sealwort field standardized production is facilitated.

The invention discloses a seed selection method of E. urophylla*E. Grandis clone DH32-13. The method comprises the following steps: firstly, a female parent Eucalyptus urophylla U16 and a male parent Eucalyptus grandis G46 are taken as parents, and subjected to castration, bagging, pollen collection, artificial pollination, bag removing, seed collecting, seeding and seed selection to obtain the E. urophylla*E. Grandis clone DH32-13 with consistent characters, stable inheritance and not subjected to character segregation. The E. urophylla*E. Grandis clone DH32-13 has the characteristics of straight stem form, neat forest phase, small branches, no plant diseases and insect pests, large annual average stand volume, remarkable economic benefits, and capability of being suitable for being planted in large-area regions.

The invention relates to a tissue culture method for a plant, in particular to a tissue culture method for Cymbidium floribundum, and belongs to the technical field of agricultural plantation. The tissue culture method for the Cymbidium floribundum comprises the following six steps of: collecting an explant, disinfecting and sterilizing, sowing, proliferating, strengthening seedlings, and performing rooting culture. When the Cymbidium floribundum is propagated through plant tissue culture by a tissue culture technology, the advantage of rapid propagation can be exerted, and a large number of seedlings are obtained in a short time; compared with cottage, the tissue culture method provided by the invention is characterized in that flower colors of plants are seldomly mutated in later culture; and the plant tissue culture serving as a vegetative propagation mode can ensure that the seedlings are regular, facilitates late unified transplantation and plantation management, and can also ensure that various characters of grown product plants and bonsai are consistent. Compared with the conventional propagation mode, the invention has the advantages that a used culture medium is short in induction time, quick in seedling emergence and high in proliferation frequency; and particularly, the seedlings are regular, the method is easy to operate, and the Cymbidium floribundum can be produced on a large scale.

The invention relates to a levo oxiracetam lyophilized powder for injection. The levo oxiracetam lyophilized powder for injection is characterized by being prepared from levo oxiracetam, L-serine, mannitol and sodium glutamate as the raw materials by the steps of concentrated blending, diluted blending, freeze drying and capping. The levo oxiracetam lyophilized powder for injection prepared according to method provided by the invention has the characteristics of fixed shape, no bottle eruption phenomenon in the freeze drying preparation process, good product homogeneity, consistent upper layer and lower layer characters, few impurities, and a total impurity content of less than 0.24%, and is conducive to improving the drug use safety and reducing adverse drug reactions, the product has good stability, and the shelf life is up to 24 months.

The invention provides a method for improving African agapanthus embryogenic cell subculture effects. The method includes the steps: S1 explant selection: taking small African agapanthus buds withoutcracking to disinfect the small buds, taking small stalk explants in a cut manner, and cutting the small stalk explants into small sections; S2 callus induction and subculture: inoculating the small sections of the small stalk explants into callus induction culture media to perform induction culture, and taking calluses with retained small stalk tissues to place the calluses callus subculture media to perform subculture; S3 embryogenic callus induction: taking the calluses without containing retained small stalk tissues cultured and acquired in the step S2 to place the calluses into embryogenic callus induction culture media to perform induction culture; S4 embryogenic cell subculture preservation: taking embryogenic cells cultured and acquired in the step S3 to placing the cells into subculture preservation culture media to perform subculture preservation. According to the method, African agapanthus somatic embryogenesis system is optimized, so that more African agapanthus embryogeniccells with more consistent characters are acquired.

The invention discloses a eucalyptus urophylla*grandis clone DH32-26 variety breeding method. First, a female parent eucalyptus urophylla U16 and a male parent eucalyptus grandis G46 are adopted as parents; and through the steps of emasculation bagging, pollen collection, artificial pollination, bag removing, seed collection and sowing, and breeding, the eucalyptus urophylla*grandis clone DH32-26 with consistent traits and stable genetic stability, and without trait separation is obtained. The variety has the characteristics of straight trunk, neat forest, small branches, no pest or disease, high average annual accumulation amount, and significant economic benefit. The variety is suitable for large-scale popularization.

The invention discloses a premature, disease-resistant and stress-resistant mini broccoli breeding method and belongs to the technical field of plant cultivation. Flower buds, suitable for microspore culture, of broccoli and cabbage mustard breeding materials from the mid-late uninucleate stage to the early dicaryon stage are used for microspore culture, a large number of regeneration plants are created, excellent DH plants are screened out for selfing, a DH strain stable in botanical character, good in combining ability and large in pollen quantity is obtained, and hybridization first generation seeds F1 are prepared in the flowering stage through artificial emasculationare carried out to obtain; generation-adding is conducted on the F1, then good single plants with botanical characters similar to those of broccoli are selected, selfing in the bud stage is carried out to obtain F2, then generation-adding is conducted on three generations to select self-incompatible strains 11-13-7-8-3 and 12-15-9-3-2 which are excellent and stable and cultivated through continuous selfing in the bud stage, and premature, disease-resistant and stress-resistant mini broccoli is obtained through hybridization. The self-incompatible strains are used for mating, reciprocal cross plants are consistent in character, and the yield of produced seeds is increased by over 50% compared with that of sterile line seed production.

The invention discloses a parent propagation method for preventing cabbage parent mixing. The plants grown from axillary buds are taken from the plants, so that the 100% purity can be ensured, the characters of the plants are fully consistent with the characters of the original plants, and people do not need worry about the parent mixing. The method is simple and easily performed. The viability of the cabbage parent does not decline according to the method and the parent purity is ensured.

Less-impurity levo oxiracetam sterile powder is characterized in that the less-impurity levo oxiracetam sterile powder is prepared from levo oxiracetam, L-serine, mannitol, polyethylene glycol and Tween 80 as raw and accessory materials by the steps of concentrated distribution, dilute distribution, freeze drying and capping, the less-impurity levo oxiracetam injection sterile powder prepared by the method has a fixed shape, the process of freeze drying preparation is free of dry shrinkage and bubbling phenomenon, product homogeneity is good, lower layer and upper layer characters are consistent, impurities are less, the total impurities are less than 0.23%, the less-impurity levo oxiracetam sterile powder helps to improve the safety of drug use, and reduces adverse drug reactions, the product has good clarity, the turbidity of the product is lower than that of 0.5 # standard turbidity fluid, and has good stability, and the shelf life is up to 24 months.

The invention discloses a preparation method of levo-oxiracetam lyophilized powder. The levo-oxiracetam lyophilized powder is prepared from the following raw materials and auxiliary materials in percentage by weight: 50-59% of levo-oxiracetam, 20-25% of L-serine, 10-17% of mannitol, 5-7% of polyethylene glycol 2000, 5-10% of sodium hydrogen sulfite and 0.1-0.5% of phenol; and the levo-oxiracetam lyophilized powder is obtained by carrying out the steps of thick mixing, dilute mixing, freeze drying and capping. The preparation method disclosed by the invention has the advantages that specific excipient combination is utilized, and then a specific freeze drying technology is combined, so that the prepared levo-oxiracetam lyophilized powder has fixed geometry, no phenomena such as dry shrinkage and bubbling are caused in a freeze drying preparation process, product uniformity is good, upper and lower layers are consistent in character, antibacterial property is strong, sterility test is qualified, product stability is good, and insoluble particles are obviously reduced.