32 results about "Breed type" patented technology

The invention provides a method for cultivating a rose cultivar by double hybridization of three cultivars. Double hybridization is performed by three different rosa plants. A series Shandong Rosa gugosa cv. plena serving as a female parent is artificially hybridized with B series Rosa bella Rehd.et wils to obtain an offspring ABF1, the A series Shandong Rosa gugosa cv. plena serving as the female parent is artificially hybridized with C series Rosa davurica Pall to obtain an offspring ACF1. The ABF1 is hybridized with the ACF1, variant plants with flower color, petal count, flowering phase length and drought, cold, salinity and alkalinity resistance obviously improved as compared with parents are screened out, and the offspring of the variant plants is inbred and purified to obtain the stable new-generation hybrid rose cultivar capable of continuously blooming and having comprehensive characters and objective characters.

The invention relates to establishment of a dominant population of northern spring wheat, belonging to the technical field of selective breeding of plant varieties. The technology provided by the invention comprises the following steps: according to complicated relationships like blood relationship, genetic relationship and geographical relationship, dividing northern spring wheat varieties into two simple dominant populations, i.e., a population m and a population n, then selecting a plurality of improved varieties popularized in a proper wheat region and carrying out diallel crossing, and seeking a best combination (m and n) as a tester; subjecting breeder-owned key backbone resources to correspondingly cross-breeding with the population m and the population n, then carrying out field identification and variety testing, eliminating the combination with a yield lower than the yield of the tester, retaining the progeny combination cross-breeding with the population m with the yield higher than the yield of the tester and carrying out including into a group n, and retaining the progeny combination cross-breeding with the population n with the yield higher than the yield of the tester and carrying out including into a group m; respectively carrying out diallel crossing in the group m and the group n; then selecting a best combination from each group, and carrying out cross-breeding so as to create an ideal variety; meanwhile, using the created ideal variety as the tester in a second round for a next cycle. The main purposes for establishment of the dominant population of the northern spring wheat are to shorten the time of northern spring wheat breeding and realize early selection of an ideal main popularized northern spring wheat variety which is urgently needed in local.

The invention discloses a method for large-scale breeding of large-standard mandarin fish fingerling. The method comprises the steps of 1 pool selection, 2 pool cleaning and disinfection, 3 forage fish breeding, 4 mandarin fish fry and large-scale fingerling breeding, 5 released density determination, 6 forage fish feeding, 7 water quality management and 8 disease control. The method is easy and convenient to operate, simple in device, easy to manage and high in fingerling survival rate. The method takes the lead in successfully breaking through a key of a large-scale mandarin fish fingerling technology at home and abroad, natural bait breeding through fertilizer controlled-release bags and manual bait domestication is used in cooperation for feeding are creatively and successfully achieved in the aspects of fingerling breeding, bait feeding and the like, the blank of domestic large-scale mandarin fish fingerling breeding in a pool is filled, the survival rate of the fingerling is over 80%, the water quality of the pool is kept good, most effective practical measures and means are created for thorough development of mandarin fish serving as a famous excellent breeding breed, and the method has the great social benefit and economic benefit.

The invention provides a method for cultivating a novel Dingyuan pig breed, which relates to a method for cultivating a novel pig breed. The invention provides the method for cultivating the novel Dingyuan pig breed which has the advantages high fecundity, good meat quality and strong stress resistance of Dingyuan pigs as well as the characteristics of fast growth, high lean meat percentage and the like of imported pigs. The method comprises the following steps: a Dingyuan sow is hybridized with a novel USA strain Duroc boar to cultivate a first generation sow core group; second grading hybridization is performed to the first generation sow core group and a Dingyuan boar or the novel USA strain Duroc boar; from the third generation, group closure propagation and breeding are adopted respectively, and crossing of two to three generations is performed; and selection and remaining are performed through methods of comprehensive selection indexes and molecule marking assistance selection to form the novel Dingyuan pig breed, namely a novel breed of Wan Huai pigs and a novel breed of Dingyuan-Duroc pigs.

The invention discloses a method for breeding a Shufeng fat lamb type meat goat variety, and belongs to the technical field of animal breeding. According to the breeding method, a south Sichuan black goat Zigong type, a Jianzhou large-ear goat black group and Lezhi black goats are used as materials, gene isolation or mutation and other phenomena of filial generations are few, the step of backcross is omitted, and breeding steps are simple and convenient; the new meat goat variety is obtained through hybridization and breeding, and the method has the advantages that early growth speed is high, reproductive performance is good, individual sizes are moderate, meat productivity is good and meat quality is good, and the method is suitable for a confined farming mode; fattening feed of the early stage is high in reward, and the method is very suitable for factory-like and industrial fat lamb special production.

The invention discloses a method for breeding green-shelled egg laying ducks. The method is characterized by comprising the following steps: (1) collecting hatching eggs of male and female ducks from five or more than five towns of a central laying area, wherein the shape and appearance of the hatching eggs meet the variety, and the green-shelled egg rate of the hatching eggs is more than 40 percent; (2) cleaning, sterilizing and hatching the hatching eggs, eliminating unqualified ducklings to enable the variety and the appearance to be relatively consistent, then feeding mixed duckling groups until the ducklings are 120 days old, and establishing a basic green-shelled egg laying duck group according to a ratio of the male ducks to the female ducks by taking a family as a unit, wherein the ratio of the male ducks to the female ducks is 2:10; (3) making a comprehensive selection index, recording the egg yield, the daily egg number, the egg weight, the number of green-shelled eggs and the number of white-shelled eggs of each of at least thirty families in a determination process, eliminating white-shelled egg laying ducks from each generation, breeding a generation every two years, and performing test cross to improve the purity of green-shell genes and the egg laying performance so as to avoid mating of full sibs and half sibs, and breeding three to five generations to obtain a green-shelled egg product group.

The invention relates to a method for building a dwarf plant species of the genus Lagerstroemia genus Lagerstroemia, belonging to the technical field of plant cultivation. Including the following steps: 1. Establish a resource nursery for dwarf crape myrtle varieties; 2. 3. Test of dwarf crape myrtle varieties; Tested characteristic items and records; 4. Comprehensive evaluation index; 5. Establishment of classified variety groups based on test results. The present invention overcomes the defects of the prior art, and the established dwarf crape myrtle variety group can better satisfy small-sized potted plants, flower bed arrangements, flower mirrors and others due to low plants, strong branching ability, good flowering density and good ornamental performance. The production of dwarf crape myrtle seedlings required for green space landscape construction, thereby expanding the commodity types of crape myrtle seedlings, broadening the application field, enhancing the commodity value of stump bonsai and enriching the garden landscape, while improving the economic benefits of seedling production.

The invention relates to a method for culturing super fine ground-cover chrysanthemum by using shennong Chrysanthemum Idicum L. It comprises following steps: employing shennong Chrysanthemum Idicum L and ground-cover chrysanthemum 'pudijin'as parent material for hybridization, separating bud with plastic bag when bud grows out, collecting pollen at full-bloom stage, storing at dry condition. Cutting the outside petal when the stamen in the first and second cycle discharges pollen, when the pistil stigma forms into V shape and the excretion appears, pollinating pollen of male parent and mentorpollen into stigma of female parent at 10: 00- 11: 00 in sunny morning; picking seed when it turns pitchy 45-60 days after pollination, and storing at dry condition; selecting hybrid in the next spring sowing, analyzing fragrant element in female and male parent material and hybrid flower, and selecting super fine ground-cover chrysanthemum variety. The new variety is characterized by fine scent,strong resistance, abundant flower, central blooming period, short or creeping plant, easy management and suitability for culture in the open.

The invention discloses a method for raising a novel strain of meat sheep. The method includes carrying out crossing on Hu sheep and Australian white sheep to obtain a first crossed generation of flock of sheep; carrying out crossing on high-quality ewes of the first crossed generation of flock of Australian-Hu sheep and Charolais sheep to obtain a second crossed generation of flock of sheep; carrying out athwart crossing and fixation on the second crossed generation of flock of sheep; appropriately introducing 'new blood' into the second crossed generation of flock of sheep to prevent inbreeding depression; ultimately raising the novel strain of meat sheep by means of strict feeding and management and ideal typical individual selection. The Hu sheep is used as a female parent, and the Australian white sheep is used as a male parent. The high-quality ewes of the first crossed generation of flock of Australian-Hu sheep are used as female parents, and the Charolais sheep is used as a male parent. The invention further discloses matched fattening fodder for raising the novel strain of meat sheep. The method and the matched fattening fodder have the advantages that diarrhea of lambs in weaning periods can be reduced by the aid of the fodder, body physiological functions of the sheep, the growth rates of the sheep in later periods and fodder digestion and utilization can be improved, the method and the matched fattening fodder are matched with modern genetic breeding and reproducing techniques, and accordingly the novel strain raising success rate can be effectively increased; the meat performance of the novel strain of the meat sheep raised by the aid of the method and the matched fattening fodder can be improved on the basis that the high reproductive capacity of a variety of the Hu sheep is maintained.

The invention discloses a breeding method of a rice storing line with special characters, and belongs to the technical field of special rice breeding. The method comprises the following steps: selecting four special rice varieties respectively with glabrous property, premature senility resistance, endurable storage and yellow seed coat glutinous property, hybridizing and multi-crossing, screening the strains with glabrous property, premature senility resistance, endurable storage, yellow seed coat, glutinous property, agronomic character and yield character in segregative generation, breeding the yellow glutinous rice restoring line with the strains with glabrous property, premature senility resistance and endurable storage, assembling the yellow glutinous rice restoring line with the sterility line with the same characters to breed the glabrous, anti-premature senility and storage-endurable yellow glutinous hybrid rice. The hybrid rice is premature senility resistant, storage endurable, high in yield, easy for mechanically harvesting, the rice paddy is yellow, the rice is soft and good in taste and rich in various nutrients.