Method for improving hybridization fructifying rate of wheat and elytrigia repens

A technology of wheat grass and seed setting rate, which is applied in the field of improving the seed setting rate of wheat and wheat grass hybrids, can solve the problems of labor-consuming, time-consuming, low efficiency, low hybrid seed setting rate, abnormal seed development, etc., so as to improve the pollination rate and prolong the pollination time. , the effect of improving the seed setting rate of hybrid wheat and eucalyptus

Inactive Publication Date: 2009-12-16
沈天民
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for improving the hybridization seed setting rate of wheat and thinopyrum, which can effectively o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example

[0023] first embodiment

[0024] Firstly, select the dwarf sterile plant of Wheat Rand as the female parent, and Henpyrum as the male parent to carry out hybridization; then plant the Henpyrum in a greenhouse with a temperature of 23°C in August, and keep the temperature in the greenhouse at 15°C by heating in winter According to the area of ​​the greenhouse, use several 300-watt incandescent lamps to add light to the greenhouse, so that the light hours are 15 hours / day, so that the wheatgrass will bloom and loosen powder in late April of the second year; The dwarf sterile plants of Wheat Rand are transplanted in flower pots, and the glumes of the dwarf wheat Rand dwarf sterile plants are cut off by one-third, so that the stigmas are developed and exposed, and it is easy to receive external insects. Pollen: place the dwarf wheatgrass dwarf sterile plants in the wheatgrass clump, and shake the wheatgrass artificially when loosening the powder, so that the pollen falls freely on...

Example

[0028] second embodiment

[0029] Firstly, select the dwarf sterile plant of Wheat Rand as the female parent, and Henpyrum as the male parent to carry out hybridization; then, plant the Henryopsis in a greenhouse with a temperature of 25°C in September, and keep the temperature in the greenhouse at 18°C ​​by heating in winter According to the area of ​​the greenhouse, use several 200-watt incandescent lamps to add light to the greenhouse, so that the light hours are 18 hours / day, so that the wheatgrass will bloom and loosen powder in late April of the second year; Transplant the dwarf dwarf sterile plants in flower pots, and cut off one-third of the glumes of wheat rand dwarf dwarf sterile plants, so that the stigmas are developed and exposed, and it is easy to receive external pollen Place the dwarf wheatgrass dwarf sterile plant in the wheatgrass clump, shake the wheatgrass artificially when loosening the powder, so that the pollen falls freely on the stigma of the wheat ran...

Example

[0033] third embodiment

[0034] Firstly, select the dwarf sterile plant of Wheat Rand as the female parent, and Henpyrum as the male parent to carry out hybridization; then plant the Henpyrum in a greenhouse with a temperature of 28°C in August, and keep the temperature in the greenhouse at 20°C by heating in winter According to the area of ​​the greenhouse, use several 250-watt incandescent lamps to add light to the greenhouse, so that the light hours are 20 hours / day, so that the wheatgrass will bloom and loosen powder in late April of the second year; Transplant the dwarf dwarf sterile plants in flower pots, and cut off one-third of the glumes of wheat rand dwarf dwarf sterile plants, so that the stigmas are developed and exposed, and it is easy to receive external pollen Place the dwarf wheatgrass dwarf sterile plant in the wheatgrass clump, shake the wheatgrass artificially when loosening the powder, so that the pollen falls freely on the stigma of the wheat rand dwarf d...

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Abstract

The invention relates to a method for improving the hybridization fructifying rate of wheat and elytrigia repens, which comprises the following steps: selecting a shortest stalk sterile plant of wheat as a female parent and selecting elytrigia repens as a male parent to be hybridized; planting the elytrigia repens in a greenhouse at 23 DEG C-28 DEG C from August to September and heating and irradiating the elytrigia repens at the temperature lower than 15 DEG C in winter for 10 hours/day of illumination time to enable the elytrigia repens to bloom and scatter pollen in late April of the next year; transplanting the shortest stalk sterile plant of the wheat in a flowerpot to be placed under an elytrigia repens plant and cutting one third of glume to enable a stigma of the shortest stalk sterile plant to be exposed after growth; and leading the pollen of the elytrigia repens to freely fall on the stigma of the shortest stalk sterile plant of the wheat during pollen scattering. The invention solves the problems of difficult hybridization and low fructifying rate between common wheat and the elytrigia repens, saves power and time and has high efficiency and can transfer good genes of the elytrigia repens in the common wheat at maximum so as to synthesize novel species and types.

Description

technical field [0001] The invention relates to a method for breeding crops, in particular to a method for improving the hybrid seed setting rate of wheat and echinacea. Background technique [0002] Wheat is the main food crop in my country, but in recent years, the increase rate of wheat production has decreased, large areas of lodging have appeared in high-yielding areas, and the spread of new sheath blight has expanded, which has brought great threats to wheat production. [0003] To solve these problems, we must start with breeding, excavate the excellent genes in wild species, and use wild relatives to hybridize with common wheat, so that wheat can obtain disease resistance, strong stress resistance, and wide adaptability that it does not have. Excellent gene, but the biggest difficulty in the process of distant hybridization is how to increase the seed setting rate of common wheat and wild relatives in contemporary hybrids, so as to obtain more F1 generation seeds. Fo...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
Inventor 沈天民
Owner 沈天民
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