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Wheat breeding selection method taking combination and ear-to-row as units

A technology of ear row and unit, applied in the field of wheat breeding selection, can solve the problems of low breeding efficiency, low probability of obtaining good offspring, failure, etc., and achieve the effect of avoiding environmental errors, avoiding the influence of environmental errors, and high efficiency

Inactive Publication Date: 2018-11-23
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Often with the increase of generations, land use increases sharply, and the workload of selection also doubles, but the probability of obtaining good offspring is not high, resulting in low breeding efficiency or even failure

Method used

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  • Wheat breeding selection method taking combination and ear-to-row as units
  • Wheat breeding selection method taking combination and ear-to-row as units
  • Wheat breeding selection method taking combination and ear-to-row as units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Taking three new wheat varieties bred in recent years (Shannong No. 25, No. 29 and No. 30) as examples, the following brief analysis is given below:

[0088] The area of ​​the breeding test field is about 15-16 mu, including germplasm resource nursery, hybrid progeny nursery and other materials. The area of ​​hybrid progeny nursery is about 5-6 mu, and the product ratio identification is about 6-7 mu. Breed new varieties by watching more selections on a smaller area. The most commonly used methods described below vary according to the performance of the material, please refer to the selection and breeding of specific varieties.

[0089] (1) Selection method

[0090] f 1 : 1 row per combination, 30 capsules, row length 1.2m. The main task is to visually evaluate the portfolios, eliminate the portfolios with obvious shortcomings, mix the selected portfolios, and eliminate about 50% of the portfolios. Scale: 600 combinations and about 300 combinations were selected. ...

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Abstract

The invention discloses a wheat breeding selection method taking combination and ear-to-row as units. The method comprises the following steps: selecting a parent according to a breeding target, and performing hybridization to obtain a plurality of hybrid combinations; for F1-F3 generations, taking the combination as the smallest selection unit, treating all combinations as a whole, evaluating thecombinations, eliminating the defective combinations, harvesting the key combinations, and randomly harvesting single panicles in the key combinations; for F4-F6 generation, take one combination as awhole on the basis of using the ear-to-row as the smallest selection unit, evaluating ear-to-rows, harvesting the key ear-to-rows, randomly harvesting in the key ear-to-rows, and threshing the singlepanicles; after F7, completely harvesting for the identification of variety comparison. The selection method provided by the invention can reduce the environmental error and improve the accuracy of material evaluation, greatly reduces the work load, and increases the breeding efficiency.

Description

technical field [0001] The invention relates to the technical field of plant breeding, in particular to a wheat breeding selection method based on combination-ear behavior unit. Background technique [0002] Wheat is the third largest grain crop in my country, and the development of the wheat industry is directly related to national food security and social stability. The increase in wheat production depends on the continuous improvement of improved varieties and their cultivation techniques, but the source is the cultivation of improved varieties. In wheat breeding, conventional cross breeding is still the main technology at this stage and for a long time in the future. The key link and the main work of conventional wheat hybrid breeding is the selection of hybrid offspring. The current selection methods include pedigree method, hybrid method, derivative system method, intergenerational selection method, single seed transmission method and so on. An important problem in p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 李斯深
Owner SHANDONG AGRICULTURAL UNIVERSITY