46results about How to "Improve seed production efficiency" patented technology

The invention relates to the field of pollination and seed production of rapes, in particular to a method for pollinating and producing seeds of the rapes by osmia. The osmia is Japanese osmiacornifrons; and the method comprises the following steps: 1-2 days before the flowering of the rapes, moving beehives with bee releasing openings on one side into a rape seed producing field or a seed producing shed, wherein the distance between the adjacent beehives is 20-30 m and the distances between the lower end surfaces of the beehives and the ground are 1.2 m; and when the flowering period of the rapes is finished, finishing the pollinating task of the osmia, finishing bee rearing and collecting the bees into the beehives. Compared with the traditional bee pollination and seed-production, the method for pollinating and producing the seeds of the rapes by the osmia, provided by the invention, has the advantages as follows: (1) the seed producing efficiency is high and seed purity is good; (2) time and labor are saved once for all; (3) times are consistent and the operation is easy; and (4) the method is used for both scientific research and production, not only is suitable for requirements of large-area seed production fields but also can preferably satisfy small-area seed production sheds, in particular hybrid seed productions in the small-area seed production sheds; and difficulty problems of crossing, more labors, low seed setting rate and the like are effectively solved.

The invention discloses a method for creating a short-style tomato. The method uses the CRISPR / Cas9 system to mutate and knock out the 5th or 6th exon of the PS-2 gene of tomato, and the style of the obtained mutant strain is shortened , significantly improved the efficiency of emasculation.

The invention discloses a seed production method for three-line hybrid wheat, a produced seed and application of produced seed, relates to the technical field of hybrid wheat seed breeding, and solves the problem that the seed production efficiency in the conventional three-line hybrid wheat seed production process is low. By the use of the characteristic that wheat has a vernalization ecological difference, the seed production method comprises the following steps of 1. combining parents, namely forming a parent combination 1 by selecting a winterness sterile line female parent and a springness restorer line male parent, or forming a parent combination 2 by selecting a springness sterile line female parent and a winterness restorer line male parent; 2. performing sowing, namely sowing seeds of the parent combination 1 or the parent combination 2, wherein the seeds of the springness restorer line male parent or the winterness restorer line male parent are sowed in winter, so that the seeds can live through the winter in soil in the form of germs; 3. performing field management after the seeds are sowed; and 4. after the wheat is mature, uniformly harvesting matured wheat to obtain the hybrid seeds of wheat.

The invention relates to a method for producing cotton seeds by inducing long cotton stigmas, belonging to the technical field of cotton hybrid seed production and suiting for producing cotton hybrid seeds. The method comprises the following steps of: dipping a GA3 solution with the concentration of 1000 PPM (Parts Permillion) on the bud base of 8-18 days and dipping each flower with 150-200 microlitre of GA3 solution; inducing more than 95 percent of stigmas to be 8mm higher than a stamen cluster; and directly pollinating without removing stamens after the cotton blossoms out. Flowers are quantitatively dipped by adopting the exogenous hormone GA3, more than 95 percent of stigmas can be stably induced to be 8mm higher than the stamen cluster, and the purity of the produced hybrid seeds can accord with the production requirement.

The invention discloses a breeding method of a curly-leaf sesame inbred line. The breeding method comprises the following steps: 1) with white sesame Ezhi No.4 as a female parent and CLSU-9*J972 as a male parent, breeding a hybrid combination F1; 2) selfing F1 hybrid seeds to obtain F2; 3) with a curly-leaf plant in an F2 population as a female parent, crossing with a non-curly-leaf sister plant or an improved variety in the same family to obtain a hybrid F1; 4) with the hybrid F1 as a female parent, crossing with a non-curly-leaf sister plant in the same family to obtain a sister cross F1, or backcrossing with the improved variety to obtain BC1F1 seeds; 5) selecting a curly-leaf plant from the sister cross F1 or the BC1F1 generation for performing sister crossing or backcrossing to reserve seeds; 6) performing 3-5 generations of sister crossing or backcrossing to obtain the curly-leaf sesame inbred line after homozygosis. By the breeding method, a new breeding way for establishing germplasm resources of curly-leaf sesame is provided; curly-leaf leaves are fat and tender, are high in biological yield and can be used as vegetables, so that compared with the conventional variety, the curly-leaf sesame inbred line has obvious advantages, and thus can be popularized and applied in breeding and production.

The invention discloses a method for breeding a polygene polymeric two-line sterile line suitable for use by mechanized mixed-planting seed production. After rice parents with a recessive brown or pocked or black-brown specific marker are hybridized with a good two-line sterile line of rice which contains a herbicide-resistant endogenous gene and a dominant semi-dwarf gene and is insensitive to gibberellin, selfing is carried out, a restorer is utilized for combination testing, and a two-line sterile line with high combining ability, the genes and performance characteristics is chosen out. Themethod realizes polygene polymerization of the two-line sterile line; in the process of carrying out mixed-planting seed production with a combination of the two-line sterile line, after pollinationis complete, a corresponding herbicide is sprayed to kill a male parent, guaranteeing the production of qualified hybrid seeds; moreover, since the two-line sterile line is insensitive to the gibberellin, the defects of overhigh plants and difficult pollination caused by the spraying of gibberellin in the process of seed production are overcome, and therefore the yield of seed production is increased.

The invention discloses a manual pitaya seed production machine. The machine comprises a base, a base fixed table, a guiding stand column, an upper slide carriage, a top fixed table, a lifting screw rod, a lifting handle, a lower slide carriage and a tool casing, wherein the bottom fixed table is fixed on the base, and three lower fork shafts are upward and convexly arranged on the bottom fixed table; the lower end of the guiding stand column is fixed on the base; the upper slide carriage is arranged on the guiding stand column in a lifting manner; the top fixed table is connected with the upper slide carriage through an upper connecting rod, and three lower fork shafts are downward and convexly arranged on the top fixed table; the lifting screw rod can be arranged on the guiding stand column in a rotating manner; the lifting handle is connected with the upper end of the lifting screw rod; the lower slide carriage is in engaged connection with the lifting screw rod through threads; the tool casing comprises an annular cover body and three blades which are uniformly arranged at the lower end of the cover body along the same circumference; and the cover body is connected with the lower slide carriage through a lower connecting rod. The manual pitaya seed production machine ensures safety and stability when pitaya is subjected to seed producing treatment, so that fruit stems can be protected from being damaged. The manual pitaya seed production machine is convenient to use and can saves time and labor to improve seed production efficiency.

The invention discloses a dragon fruit seed production machine. The dragon fruit seed production machine comprises a base, a bottom fixing platform, a guide column, an upper sliding sleeve, a top fixing platform, a lower sliding sleeve and a cutter sleeve, wherein the bottom fixing platform is fixed to the base, three lower fork shafts which are uniformly distributed along the same circumference are arranged in the bottom fixing platform in an upward convex mode, the lower end of the guide column is fixed to the base, the upper sliding sleeve is arranged on the guide column in a mode that the upper sliding sleeve is capable of sliding up and down, the top fixing platform is connected with the upper sleeve through an upper connecting rod, three upper fork shafts which are located right above the corresponding lower fork shafts are arranged on the top fixing platform in a downward convex mode, the lower sliding sleeve is arranged on the guide column and driven by a lifting mechanism to slide up and down, the cutter sleeve comprises a sleeve body and three cutters which are uniformly arranged at the lower end of the sleeve body along the same circumference, and the sleeve body is connected with the lower sleeve through a lower connecting rod. By the adoption of the dragon fruit seed production machine, the safety and stability can be ensured when seed production processing is conducted on dragon fruits, and therefore the damage on fruit stems is avoided, the usage is convenient, the time and labor are saved, and the seed production efficiency is improved.