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Method for hybridizing triticale and mediterranean agropyron

A hybridization method and ice grass technology, which are applied in horticultural methods, botanical equipment and methods, plant genetic improvement and other directions, can solve the problems of ineffective hybridization, insufficient development of the female parent stigma, and few artificial pollination times, and increase the number of pollinations. Opportunity, breaking incompatibility, effect of increasing seed set

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

[0006] The purpose of the present invention is to provide a hybridization method of triticale and wheatgrass, which can effectively overcome the technical defects of the prior art such as poor hybridization, less number of artificial pollinations, insufficient stigma development of the female parent, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0022] Firstly, the sterile plant of Triticale Lanyu No. 2 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 23°C in August, and heated in winter to make the Keep at 15°C, use several 300-watt incandescent lamps to add light to the greenhouse, so that the light hours are 20 hours / day, so that the Mediterranean wheatgrass will bloom and loose powder in late April; The sterile plant Yu No. 2 was transplanted in a flower pot, and the glume of the sterile plant of Triticale Lan Yu No. 2 was cut off by one-third, so that the stigma was developed and exposed, and it was easy to receive external pollen; The sterile plants of Triticale Lanyu No. 2 were placed under Agropyrene mediterranea, so that the ears of Agropyron tritica were directly above the sterile plants of Agropyron triticale, and the pollen fell freely on the wheatgrass on the stigma of ...

no. 2 example

[0027] Firstly, the sterile plant of Triticale Lanyu No. 2 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 heated in winter to make the Keep 16°C, use several 200-watt incandescent lamps to add light to the greenhouse, so that the light hours are 22 hours / day, so that the Mediterranean wheatgrass will bloom and loose powder in late April; The sterile plant Yu No. 2 was transplanted in a flower pot, and the glume of the sterile plant of Triticale Lan Yu No. 2 was cut off by one-third, so that the stigma was developed and exposed, and it was easy to receive external pollen; The sterile plants of Triticale Lanyu No. 2 were placed under Agropyrene mediterranea, so that the ears of Agropyron tritica were directly above the sterile plants of Agropyron triticale, and the pollen fell freely on the wheatgrass on the stigma of the...

no. 3 example

[0032]Firstly, the sterile plant of Triticale Lanyu No. 2 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 heated in winter to make the Keep 18°C, use several 250-watt incandescent lamps to add light to the greenhouse, so that the light hours are 25 hours / day, so that the Mediterranean wheatgrass will bloom and loose powder in late April; The sterile plant Yu No. 2 was transplanted in a flower pot, and the glume of the sterile plant of Triticale Lan Yu No. 2 was cut off by one-third, so that the stigma was developed and exposed, and it was easy to receive external pollen; The sterile plants of Triticale Lanyu No. 2 were placed under Agropyrene mediterranea, so that the ears of Agropyron tritica were directly above the sterile plants of Agropyron triticale, and the pollen fell freely on the wheatgrass on the stigma of the ...

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PUM

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Abstract

The invention relates to a method for hybridizing triticale and mediterranean agropyron, comprising the following steps: the sterile strain of No.2 triticale 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.2 triticale Lanyu is cut by one third, and the stigma of the sterile strain of the No.2 triticale Lanyu is exposed after development; and pollen freely falls on the stigma of the sterile strain of the No.2 triticale 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 triticale and wheatgrass mediterranean. Background technique [0002] In recent years, many agronomists in the world have focused their attention on the utilization of wild germplasm resources of close relatives of wheat, especially a large number of translocation lines of wheat-rye and wheat-thatch and substitution lines have made great contributions to the substantial improvement of the world's wheat production. Up to now, 60-70% of the world's wheat production is all translocation lines, substitution lines or derivatives of wheat-rye. However, using other wild germplasm resources to change the traits of wheat, especially digging out the excellent genes of rye has always been the best breeding method recognized by the international wheat breeding community. The superior gene of the species W. mediterranei is transferred to hexaploid triticale to improve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01G7/00
Inventor 沈天民
Owner 沈天民