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Method for propagating temperature-light sensitive dual-purpose wheat

A dual-purpose line, wheat technology, applied in the directions of botanical equipment and methods, application, horticulture, etc., can solve the problems affecting the production of two-line hybrid wheat seeds, reducing the purity of hybrids, and difficult to guarantee the purity, etc., to solve the problem of breeding production. Technical difficulties, the effect of maintaining high sterility, and improving purity

Inactive Publication Date: 2012-03-07
CHONGQING ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In applied research, with the increase of the service life of the sterile line, the difference between the strains of the sterile line population is getting bigger and bigger, and the difference in fertility, development progress, plant height, etc., especially the difference in fertility, will directly lead to The purity of hybrids is reduced, the efficiency of seed production is low, the time is long, and the purity is difficult to guarantee, which seriously affects the seed production of two-line hybrid wheat. The research and development of rapid purity-preserving breeding technology for temperature-sensitive dual-purpose wheat is imminent

Method used

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  • Method for propagating temperature-light sensitive dual-purpose wheat
  • Method for propagating temperature-light sensitive dual-purpose wheat
  • Method for propagating temperature-light sensitive dual-purpose wheat

Examples

Experimental program
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Embodiment 1

[0032] Example 1 Breeding method of temperature-sensitive dual-purpose line wheat

[0033] combine figure 1 , the breeding method of temperature-sensitive dual-purpose line wheat, is characterized in that: it comprises the first year group individual plant selection, the second year summer sowing plus generation selection, the second year autumn stage sowing and the third year summer sowing original seed propagation:

[0034] a. Individual plant selection in the first year, that is, selecting typical plants for seedlings

[0035] The temperature-light CMS line C050S wheat selected by Chongqing Academy of Agricultural Sciences was sown in winter in the first year, and the plants with uniform appearance and agronomic characteristics in the sterile period were selected as typical plants; for the typical plants, the pollen sterility rate was 100%. , the self-fertility rate is 100%, and the single plant with good flowering habit cuts off the main stem and tiller sterile ears, uses...

Embodiment 2

[0048] Example 2 Breeding method of temperature-sensitive dual-purpose line wheat

[0049] combine figure 2 , taking the climatic conditions in Chongqing as an example, the propagation method of temperature-sensitive dual-purpose wheat is characterized in that it includes the selection of a single plant in the first year, the selection of summer sowing in the second year, the staged sowing in the autumn of the second year, and the second year of planting. Three-year summer sowing original seed propagation and third year autumn late-sowing original seed propagation:

[0050] a. Individual plant selection in the first year, that is, selecting typical plants for seedlings

[0051] The temperature-light type CMS line C49S-87 wheat selected by Chongqing Academy of Agricultural Sciences was sown on October 25th, and the population was 450 plants; Listing number; when flowering, take the pollen from the main panicle of each typical plant or the upper, middle and lower parts of the...

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Abstract

The invention relates to a method for propagating temperature-light sensitive dual-purpose wheat. By using the technical measures of choosing a colony single plant in the first year, adding generation choosing for summer seeding in the second year, seeding by stages in autumn of the second year and propagating the breeder seed in summer of the third year, the seeding time is reduced to 3 years from the original 4-5 years; the manpower and material resources are saved; the production cost of male sterile line is lowered; the purity of the temperature-light sensitive dual-purpose wheat is increased; the sterility degree of the temperature-light sensitive dual-purpose C49S-87 wheat is increased by 5.4%-12.1%; the output of hybridized wheat is increased; when a mu of breeder seeds of the temperature-light sensitive dual-purpose wheat male sterile line was seeded in summer, 150-200 kilograms of breeder seeds can be harvested and the harvested breeder seeds can be used for propagating 30-40mu of breeder seeds seeded in autumn; the yield per mu is above 200 kilograms; and 6000-8000 kilograms of breeder seeds can be produced for breeding 1200-1600 mu of breeder seeds.

Description

technical field [0001] The invention belongs to the field of wheat propagation, and in particular relates to a propagation method of temperature-photosensitive dual-purpose wheat. Background technique [0002] Wheat is one of the main food crops. Nearly half of the world's population eats wheat as the staple food. Wheat is the world's largest food crop. my country is the largest country in wheat production and planting. However, in recent years, the population has been increasing and the area of ​​wheat planting has been decreasing. Therefore, whether the unit output of wheat increases or not directly affects the food security in my country and the world. [0003] The utilization of heterosis is one of the effective ways to increase the yield of crops, and it is widely used in many crop productions. The Specialty Crops Research Institute of Chongqing Academy of Agricultural Sciences (formerly Chongqing Crop Research Institute) first carried out research on thermo-photosensi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00
Inventor 余国东李伯群周凤云高志宏杨明张继君
Owner CHONGQING ACAD OF AGRI SCI