Method for producing edible sunflower hybrid seeds
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A technology of hybrids and sunflowers, applied in the direction of botany equipment and methods, application, plant genetic improvement, etc., can solve the problems of difficulty, low efficiency, high price, etc., to prevent injury and inhalation, simple seed production process, selection The effect of short breeding time
Inactive Publication Date: 2010-08-25
NORTHWEST A & F UNIV
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Problems solved by technology
The seed production procedures and production links of the three-line method are relatively complicated, so that the cycle of breeding new combinations is long, the efficiency is low, the difficulty is great, the advantages of the combination are not strong, the promotion links are many, and the speed is slow, resulting in high cost and high price of seeds. These are one of the factors that limit the planting area of sunflower three-line hybrids, and it is also one of the reasons why my country's edible sunflowers cannot come up with dominant hybrid combinations as soon as possible.
Chemical male killing is easily affected by environmental conditions, the effect is unstable, the cost of seed production is high, and it will cause environmental pollution
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Embodiment 1
[0024] The seed production method of the sunflower hybrid provided by the present embodiment may further comprise the steps:
[0025] (1) Cultivate parent a: plant edible sunflower variety a with high combining ability and good economic traits at the production site, and select a strain with strong adaptability, high purity, and non-degeneration in sister cross through 5-8 generations of sister crossing, as parent a;
[0026] (2) Cultivate parent b: plant an edible sunflower variety b at the place of production, which is comparable in flowering stage, maturity stage, and plant height to parent a, and whose disease resistance and grain size are complementary to parent a. After selfing for 5-8 generations, select a hybrid Ligao's line, as the parent b;
[0027] (3) Hybrid seed production: Parent a and parent b are planted in different areas of the production site at the same time, and the pollen of the above-mentioned parent a and parent b is collected respectively with a vacuu...
Embodiment 2
[0030] (1) Cultivate parent a: plant edible sunflower variety a with high combining ability and good economic traits at the production site, and select a strain with strong adaptability, high purity, and non-degeneration in sister cross through 5-8 generations of sister crossing, as parent a;
[0031] (2) Cultivate parent b: plant an edible sunflower variety b at the place of production, which is comparable in flowering stage, maturity stage, and plant height to parent a, and whose disease resistance and grain size are complementary to parent a. After selfing for 5-8 generations, select a hybrid Ligao's line, as the parent b;
[0032] (3) Hybrid seed production: Parent a and parent b are planted in alternate rows and one-to-one correspondence, the row ratio is 1:1, the row spacing is 70 cm, and the plant spacing is 40 cm. During the flowering stage, the flower disks of the parent a plant and the flower disks of the corresponding parent b plants in the rows are interlocked and...
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Abstract
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.
Description
technical field [0001] The invention relates to a seed production method of edible sunflower hybrids. Background technique [0002] Currently edible sunflower hybrid seed production generally adopts a three-line matching method (sterile line, maintainer line, restorer line), that is, the sterile line, maintainer line, and restorer line are selected first, and then the sterile line and restorer line are selected according to different The ratio (4:2, 3:1, etc.) is planted in the field, and the flowering period is adjusted to make it consistent, and the parental hybrid is completed by insect pollination or artificial pollination, and the hybrid is cultivated. The seed production procedures and production links of the three-line method are relatively complicated, so that the cycle of breeding new combinations is long, the efficiency is low, the difficulty is great, the advantages of the combination are not strong, the promotion links are many, and the speed is slow, resulting i...
Claims
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