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Method for hybridizing wheat and mediterranean agropyron

A hybridization method, wheat technology, applied in horticultural methods, botanical equipment and methods, plant genetic improvement, etc., can solve the problems of poor hybridization, insufficient female stigma development, and less artificial pollination, so as to increase the chance of pollination , Break the incompatibility, improve the effect of seed setting rate

Inactive Publication Date: 2009-12-02
沈天民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for hybridization of wheat and wheatgrass, which can effectively overcome the technical defects of the prior art such as poor hybridization, less number of artificial pollinations, insufficient development of female stigma, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] Firstly, the sterile plant of Wheat Lanyu No. 1 was selected as the female parent, and Wheatgrass was used as the male parent for hybridization; then Agropyron mediterranei was planted in a greenhouse with a temperature of 23°C in August, and the greenhouse was kept at 15°C by heating in winter. ℃, use several 300-watt incandescent lamps to brighten the greenhouse so that the light hours are 15 hours / day, so that the Mediterranean wheatgrass will bloom and loose powder in late April; the wheat Lanyu No. The breeding plants were transplanted in flower pots, and the glumes of the sterile plants of Wheat Lanyu No. 1 were cut off by one-third, so that the stigmas were developed and exposed, and it was easy to receive external pollen; The sterile plants were placed under Agropyron mediterranea, so that the ears of Agropyron mediterranea were directly above the sterile plants of Wheatgrass No. 1, and the pollen fell freely on the stigma of the sterile plants of Wheatwort Lanyu...

no. 2 example

[0029] First, the sterile plant of Wheat Lanyu No. 1 was selected as the female parent, and Agropyron mediterranea was used as the male parent for hybridization; then Agropyron mediterranei was planted in a greenhouse with a temperature of 25°C in August, and the greenhouse was kept at 16°C by heating in winter. ℃, use several 200-watt incandescent lamps to add light to the greenhouse so that the light hours are 18 hours / day, so that the Mediterranean wheatgrass blooms and looses powder in late April; the wheat Lanyu No. The breeding plants were transplanted in flower pots, and the glumes of the sterile plants of Wheat Lanyu No. 1 were cut off by one-third, so that the stigmas were developed and exposed, and it was easy to receive external pollen; The sterile plants were placed under Agropyron mediterranea, so that the ears of Agropyron mediterranea were directly above the sterile plants of Wheatgrass No. 1, and the pollen fell freely on the stigma of the sterile plants of Whea...

no. 3 example

[0034]Firstly, the sterile plant of Wheat Lanyu No. 1 was selected as the female parent, and Agropyron mediterranea was used as the male parent for hybridization; then Agropyron mediterranei was planted in a greenhouse with a temperature of 28°C in August, and the greenhouse was kept at 18°C ​​by heating in winter. ℃, use several 250-watt incandescent lamps to brighten the greenhouse so that the light hours are 20 hours / day, so that the Mediterranean wheatgrass blooms and looses powder in late April; the wheat Lanyu No. The breeding plants were transplanted in flower pots, and the glumes of the sterile plants of Wheat Lanyu No. 1 were cut off by one-third, so that the stigmas were developed and exposed, and it was easy to receive external pollen; The sterile plants were placed under Agropyron mediterranea, so that the ears of Agropyron mediterranea were directly above the sterile plants of Wheatgrass No. 1, and the pollen fell freely on the stigma of the sterile plants of Wheat...

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PUM

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Abstract

The invention relates to a method for hybridizing wheat and mediterranean agropyron, comprising the following steps: the sterile strain of No.1 wheat Lanyu is selected as a female parent, mediterranean agropyron is selected as a male parent, and the female parent and the male parent are hybridized; the mediterranean agropyron is planted in a greenhouse with the temperature of 23-28 DEG C in August, heat and light are added to the mediterranean agropyron in a situation that the temperature is lower than 15 DEG C and the light illumination hours are less than 10 hours / day in winter, and the mediterranean agropyron blossoms out and looses powder in late April; the glume of the sterile strain of the No.1 wheat Lanyu is cut by one third, and the stigma of the sterile strain of the No.1 wheat Lanyu is exposed after development; and pollen freely falls on the stigma of the sterile strain of the No.1 wheat Lanyu when the mediterranean agropyron looses powder. The invention breaks through the incompatibility among species, enables the wheat and the mediterranean agropyron to obtain successful hybridization among different categories, can obtain a translocation line and a substitution line of the wheat and the mediterranean agropyron simultaneously and transfers the excellent gene of the mediterranean agropyron into common wheat, so that a new type and a new species of the wheat are bred.

Description

technical field [0001] The invention relates to a crop production method, in particular to a hybridization method of wheat and wheat grass. Background technique [0002] Wheat is not only the world's largest food crop, but also an important raw material for animal husbandry and industry. In view of the basic national conditions of our country with more people and less land, the only way to produce high-quality and high-yield wheat is to rely on science and technology to increase the yield per unit area of ​​wheat, improve quality, enhance resistance, and increase its wide adaptability. [0003] Practice has shown that it is difficult to breed breakthrough varieties purely relying on internal hybridization of existing germplasm resources. Although some achievements have been made in the utilization of close and distant wild germplasm resources of wheat in recent years, such as translocation lines, substitution lines and addition lines such as wheat-rye and wheat-thnature, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01G7/06
Inventor 沈天民
Owner 沈天民