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Centipede grass cross-breeding method

A technology of hybrid breeding and pseudo-grass, applied in the fields of botanical equipment and methods, plant genetic improvement, angiosperms/flowering plants, etc., can solve the problems of inability to integrate domestic abundant resources and excellent traits, and inability to achieve directional improvement and other problems

Inactive Publication Date: 2008-02-06
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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AI Technical Summary

Problems solved by technology

Although the predecessors have conducted research on the external characters, seed setting rate and flowering habit of C. spp., there is no report on the hybrid breeding method of C. spp. at home and abroad.
At present, the varieties used in production are all bred through the screening of wild resources. There are many disadvantages in the screening process, and it is impossible to effectively integrate the excellent traits of domestic abundant resources, and the purpose of directional improvement cannot be achieved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] 1. The hybridization experiment was carried out with the red-stem line as the female parent and the green-stem line as the male parent.

[0026] (1) Flower spike selection

[0027] On the red-stem material of Pseudomonas spp., select the tassels with a small number of florets on the upper part as detasselled spikes.

[0028] (2) Artificial detasseling

[0029] At 3:00 p.m., remove the open florets on the upper part of the selected ears and the unopened florets on the bottom, leaving only 10 spikelets in the middle of the ear, and use tweezers under a magnifying glass to remove the stamens of the unopened florets and all the flowers on the ear. For male flowers, special care should be taken not to damage the pistil and stigma of the florets during the process of detasseling, and the glumes of the florets should also be kept intact, so as not to cause normal pollination and fruiting in the later stage. After emasculation is completed, use a thin kraft paper bag to bag t...

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Abstract

The invention discloses a cross breeding method for eremochloa ophiuroides, comprising the choice of spica, manual detasseling, artificial supplementary pollination, the management after pollination and the seed harvest. The invention is characterized in that a technical cross breeding method for eremochloa ophiuroides is presented on the basis of the flowering habit and the property of certain self-fertilization fruitfulness rate. The red shank line of the eremochloa ophiuroides taken as female parent and the green shank line of the eremochloa ophiuroides taken as male parent are hybridized by utilizing the method to obtain the filial generation with green shank. The cross breeding method has simple manipulation and the filial generation with real, reliable and clear background, thereby providing an effective cross breeding method for the breeding of fine variety of eremochloa ophiuroides with various usages and providing an effective method for the usage of and the improvement of the abundant eremochloa ophiuroides in China.

Description

technical field [0001] The invention belongs to the technical field of plant cross breeding. Background technique [0002] Eremochloa ophiuroides (Munro.) Hack. originated in the central and southern parts of my country. It is famous for its low maintenance level, easy planting, strong acid resistance, barren resistance and less pests and diseases. It is recognized abroad as the best warm season type in China. Lawn grass, so it is also called "Chinese lawn grass". Although the predecessors have studied the external characters, seed setting rate and flowering habit of C. spp., there is no report on the hybrid breeding method of C. spp. at home and abroad. At present, the varieties used in production are all bred through the screening of wild resources. There are many disadvantages in the screening process, and it is impossible to effectively integrate the excellent traits of domestic abundant resources, and the purpose of directional improvement cannot be achieved. For this ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H5/04
Inventor 刘建秀宗俊勤王海燕王秀娥郭海林
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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