120results about How to "High combination ability" patented technology

A broadside coupled connector assembly has two sets of conductors, each separate planes. By providing the same path lengths, there is no skew between the conductors of the differential pair and the impedance of those conductors is identical. The conductor sets are formed by embedding the first set of conductors in an insulated housing having a top surface with channels. The second set of conductors is placed within the channels so that no air gaps form between the two sets of conductors. A second insulated housing is filled over the second set of conductors and into the channels to form a completed wafer. The ends of the first and second sets of conductors and the blades are jogged in both an x- and y-coordinate to reduce crosstalk and improve electrical performance.

A lever-type electrical connector assembly reduces the connection mating forces required to mate female and male connectors. The connector assembly employs a first connector with cam follower projections, a base housing with guide channels, a slide cam housing including cam grooves and projection guide tracks, and a cover housing pivotally mounted on the base housing, the cover housing having a cover housing projection. As the cover housing is rotated from an open to a closed position, it engages the cover housing projection in the projection guide track. This engagement moves the slide cam housing in the guide channel. As the slide cam housing is moved from an open to a closed position, it engages the cam follower projections in the cam grooves thereby drawing the first connector into the base housing to a connected position.

The invention belongs to a plant breeding method and in particular relates to a breeding method for a high-yield and high-resistance green Chinese onion variety applicable to multi-season cultivation. The breeding method comprises the following processing steps of: breeding crossing parents, carrying out a matching breeding test for cross combination, propagating the parents and propagating a generation F1. According to the breeding method provided by the invention, the problems that varieties are complex, characters of a strain degenerate, individual uniformity is poor, resistance is low and all-year production can not be realized, and the like in the prior art can be solved; the bred green Chinese onion hybrid is high in yielding capability, high in lodging resistance and flooding tolerance and applicable to multi-season cultivation, and disease resistance is obviously enhanced; and application amount of pesticide is reduced, production cost is reduced, land cropping index is increased, environmental protection is facilitated, pollution is reduced, vegetable basket safety is guaranteed, and income is increased.

The invention discloses a breeding method of a novel variety of red-rooted salvia. The breeding method of the novel variety of red-rooted salvia includes using a male sterile line SH-B-18 of red-rooted salvia as a female parent and a fertile line A-107 of red-rooted salvia as a male parent, and preparing the female parent and the male parent into a hybrid of red-rooted salvia. The breeding method of the novel variety of red-rooted salvia is applicable to novel high-yield, stable-yield, high-quality, disease-resistant and highly-applicable hybrid varieties of red-rooted salvia with fine comprehensive agronomic characters, which are planted in a base of Shangluo red-rooted salvia, even in same planting areas of China, and is applicable to the technical field of breeding.

The invention relates to a method for producing cross-bred maize seeds and belongs to the technical field of agricultural new variety breeding. In the invention, a female parent is obtained by subjecting a tropical maize seed breeding line 371 to three generations of self-breeding, a male parent is a maize self-bred line 269 which is obtained by three generations of self-breeding of a combination of three La maize self-bred lines with local seed background, the female parent and the male parent are crossed to produce single cross seeds, and the maize self-bred line 82 is obtained by 6 generations of self-breeding of the single cross seeds serving as a base material. The self-bred line 82 produced by the invention has the advantages of resisting various diseases such as gray leaf spot, along with stable hereditary property and high combining ability. The self-bred line 82 is a high-quality self-bred line for producing maize cross-bed seeds.

The invention discloses a method for breeding and producing of hybrid seeds for hybrid rice II super 42. The breeding method comprises the following steps: A. taking Zhenhui129 as female parent and Zhenhui084 as male parent to get seed F0; B. auto-copulating for 5-7 generations and choosing at the same time plants with strong restoration and disease-resistant ability, short leaf, compact plant type and good appearance, cultivating out restoration system Zhenhui42 of new plant type, disease-resistant and high productivity; C. crossing sterile system II-32A with said restoration system Zhenhui42 and getting new rice breed II super 42 with high leaf blight-resistant property, short leaf and compact plant type. The rice got in this invention is characterized by the good comprehensive productivity, moderate maturity time; sound property; outstanding disease-resistant property and stable productivity.

The invention relates to a method for synchronously improving the parents of hybrid rape, based on present advanced parents and two selected parents to be transferred hidden corn sterility system and dominant sterility system, while the invention uses two sterility systems to process alternative selection that selecting parental sample, building base group, and selecting. The invention can hold the genetic heterogeneity of parents, and collect more useful gene points and alleles in two groups, to improve the advantages of parents. The invention provides a method based on gene heterogeneity molecule check and special match force analysis based on present advanced parents to build two turned selected base groups of parental samples, to improve the selection effect.

The invention discloses a method for breeding Medicago sativa L. male sterile line. The method is characterized by comprising the following steps of: performing interspecific distant hybridization on wild Medicago falcata L. from Xilin Gol grassland of Inner Mongolia which is used as female parents purple alfalfa from Jungar grassland of Inner Mongolia which is used as male parents; obtaining male sterile line Ms-4 from the offsprings; back crossing four male parents with the male sterile line Ms-4; performing cuttage propagation on the male sterile plants in each back cross offspring, and testing the combining ability of the agronomic traits for further selecting two excellent male sterile lines of the Medicago sativa L. with high combining ability and high volume of production from the male sterile plants, wherein the two excellent male sterile lines are named Ms-4-1 and Ms-4-2. The sterile lines obtained by the method have high combining ability, excellent fertility, high male infertility rate up to 100% and stable heredity.

The invention discloses a breeding method of temperate and tropical corn selfing line QB446. The breeding method includes: using the F1 generation hybridized by a tropical Suwan1(C11) colony materialand temperate Lancaster material representative line Mo17 as the base material, and using a natural selection method and a manual selection method to mutually improve the two materials and perform section. The method has the advantages that the advantages of the two materials are integrated, and the excellent selfing line which is good in resistance, high in seed output rate and good in quality; the breeding procedure is simple, easy in operation, high in success rate and low in manpower and material source consumption as compared with large colony selection; the QB446 bred by the method is high in combining ability, moderate in growth period, high in seed output rate, good in quality, high in disease resistance, fast in dewatering, many in ear rows, thick in ear, widely applicable and thelike.

The invention belongs to the technical field of corn hybridization, and discloses a breeding method of corn hybrids. The method is mainly technically characterized by comprising the following steps: firstly, establishing a heterosis group and a heterosis mode, hybridizing a public selfing line Q319 and a local germplasm 81162, adopting a pedigree method, conducting selfing for six generations, selecting a superior line, cultivating a selfing line Heng H1027 which belongs to a PB group*Reid group, dividing the selfing line Heng H1027 into a group A, introducing a selfing line PH4CV variant to backcross with PH4CV, then conducting selfing for five generations to breed a selfing line Heng HC705, and dividing a pedigree of the heterosis group into an Iodent group which belongs to a male parent group B; performing test-matching and grouping on a newly introduced germplasm material, then performing line selection, then carrying out circulating line selection, enabling F1 generation inheritable characters to be stable, carrying out selfing or improved line backcrossing on single plants, and realizing segregation of F2 or BC1 generation characters; and planting ear rows in the F3 generation, performing phenotype selection and inter-group test-matching rotation selection on the segregated ear rows and individuals, and finally obtaining the new corn hybrid variety. The method has the advantages of early maturity, short stems, lodging resistance and suitability for mechanical grain harvesting.

An electrical connector assembly comprises a receptacle connector and a plug connector engaged with said receptacle connector. Said receptacle connector comprises a first housing having a pair of longitudinal sidewalls, a plurality of first contacts retained in said sidewalls and at least one pair of first metal ears attached on said sidewalls. Said plug connector includes at least one pair of second metal ears engaged with said first metal ear. The first metal ear has a identical structure with said first contact and engages with the second metal ear so that the first metal ear and the first contact can share a same mound which reduces the cost.

The invention discloses a simplified seed production method of small-grain hybrid rice and a small-grain hybrid seed. The simplified seed production method comprises the following steps: 1) cultivating strong seedlings by using Bing 4114 as a male parent; 2) directly sowing the small-grain sterile line Zhuo 201S serving as a female parent in a field, and throwing the male parent subjected to seedling strengthening in the step 1) into the field with the female parent; and 3) after maturity, harvesting the male parent and the female parent in a mixed manner, and screening and separating to obtain the small-grain hybrids. According to the simplified seed production method of the small-grain hybrid rice, disclosed by the invention, the Bing 4114 with high combining ability, strong disease resistance and homozygous genotype is selected as the male parent, and the small-grain sterile line Zhuo 201S with high stigma exsertion rate, good outcrossing characteristic and excellent agronomic traits is selected as the female parent for mixed sowing hybrid seed production; the high-yield, high-quality and disease-resistant rice small-grain hybrid seeds are obtained, male parents and female parents of the small-grain hybrid seeds are subjected to mixed sowing and mixed harvesting, male parent and female parent seed separation is achieved in combination with screening and separation, and therefore simplified seed production of the small-grain hybrid seeds is achieved.

The invention discloses a method for cultivating a new variety of argopecten purpuratus and argopecten irradians concentricus hybrid scallops. The method comprises the following steps that S1, argopecten purpuratus and argopecten irradians concentricus scallops are utilized for colony hybridization, and a mixed colony including a parent selfing colony and a hybrid colony is obtained; S2, after shell color primary selection is carried out, hybrid individuals are identified with molecular biomarkers; S3, selfing purification of argopecten purpuratus and argopecten irradians concentricus hybrid F1 is carried out, wherein the identified hybrid individuals good in expression are selected, signal parent self sperms and eggs are subjected to selfing to set up a selfing family, a hybrid F2 familygood in expression is selected from the selfing family next year, at least three generations are continuously subjected to selfing breeding according to the same method, and the new variety of the argopecten purpuratus and argopecten irradians concentricus hybrid scallops good in character expression is obtained. The new variety of the character argopecten purpuratus and argopecten irradians concentricus hybrid scallops obtained through the method is high in combining ability, fast in growth, high in dressing percentage and bright in shell color, has good hybrid vigor, and can adapt to the high-temperature environment of the southern sea area in summer well.

The invention discloses a breeding method of a corn selfing line 99-751. The method comprises the following steps: taking a lucia red cob good selfing line with high combining ability and northern leaf blight resistance as a polygenic resistance resource, taking polygenic short-culm series 5003 as a short-culm resource, taking the derived line shen 137 of PN78599 germplasm as a dwarf mosaic virus resistance resource to recombine the favorable gene through breeding techniques and thus obtaining the short-culm large-corncob excellent selfing line with high combining ability and good disease resistance.