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Configuration and production for plant multi-gene hybrid combined population variety

A hybrid combination, multi-genotype technology, applied in plant genetic improvement, botanical equipment and methods, applications, etc., can solve problems such as difficulty in achieving comprehensive transcendence

Inactive Publication Date: 2007-01-17
李晓方
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] High-quality resistance and high yield are the eternal goals of crop breeding, but for single-genotype hybrid combinations and varieties, it is always an eternal contradiction that is difficult to coordinate, and it is becoming more and more difficult to achieve comprehensive surpassing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Experimental material - corn:

[0020] Choose to collect or select as many different male lines and female lines as possible from the comprehensive species, and configure the hybrid combination. All or part of the first generation of hybrids will form the basic population of the corn population breeding. Through experience and data After the test, the combination with the same phenotype, the same ear and fruit position, etc. that meet the breeding target characteristics is regarded as a population, and the parents of the original single-genotype hybrid combination are propagated separately to form the original seed of the population variety, and the first-generation hybrid seed is made Finally, they are mixed in proportion to form commercial hybrid population varieties.

[0021] 2. Basic Group Formation Method:

[0022] Twenty male lines form a male group, which are respectively recorded as M1, M2, M3, ... M20, and fifteen female lines form a female group, which are...

Embodiment 2

[0031] Embodiment 2 dioecious crops-cucumber

[0032] 1. Experimental materials:

[0033] In this experiment, four cucumber cultivars Yuexiu No.2, Yuexiu No.3, Zaoqing No.2 and Zaoqing No.3 were selected for hybridization.

[0034] 2. Basic Group Formation Method:

[0035] Yuexiu No. 2 was crossed with Zaoqing No. 2, Yuexiu No. 3 was crossed with Zaoqing No. 3, and the two first-generation hybrids were crossed again immediately. A total of 400 seeds obtained were planted, and 400 individual plants were obtained. The selection performed well There are about 70 stable strains, 20 of which are male groups and 50 of which are female groups, forming the basic population of 1000 hybrid combinations. The numbers of each single-genotype hybrid combination are HGM1F1, HGM1F2, ..., HGM1F50 ...;HGM2F1...HGM2F50;...;HGM20F1, HGM20F2...HGM20F50.

[0036] 3. Population composition and seed production method:

[0037]After the selection and measurement of the basic population, the follow...

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PUM

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Abstract

A method for configuring and preparing the hybridized combination population of plant includes such steps as choosing the first monohybridized generations, combining them to form a basic population, choosing part of the hybridized combination to form polygenic population, individual reproduction for each first monohybridized generation, and hybridizing between them. It has high consistency, stability and specificity.

Description

technical field [0001] The invention relates to the composition and production method of multi-genotype cross-combination population varieties of plants (cross-pollination and dioecious plants). Background technique [0002] Almost all crops currently used in production are monogenotype varieties, that is, one variety with one genotype. Hybrid combination varieties utilizing heterosis provide technical support for the effective protection of variety rights. But the hybrid combination of heterosis utilization of various crops is also monotype. The single-genotype breeding technology adopted by humans has exacerbated the increasing decline of biodiversity. The pandemics of various diseases in history are all related to the large-scale use of a small number of single-genotype varieties. The genetic basis of crop varieties is becoming narrower and narrower, and the resistance and tolerance of varieties to biological natural enemies are getting worse and worse. Now that "soybe...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 李晓方
Owner 李晓方