A Pedigree Selection Method for Wheat Breeding Improvement

A pedigree selection and wheat technology, applied in the field of wheat breeding, can solve the problems of inability to select materials resistant to powdery mildew, affect the efficiency of breeding, and small stress resistance of wheat, so as to increase the number of selected single plants and systems, improve the selection effect, The effect of improving breeding efficiency

Inactive Publication Date: 2016-05-25
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods mostly use on-demand sowing, which covers a large area, and the groups of each generation are limited; the climatic conditions in the middle and late stages of wheat growth in northern Henan are suitable, and the occurrence of powdery mildew is very light, so it is impossible to select powdery mildew-resistant materials; The selection pressure for stress resistance (lodging, etc.) and disease resistance (powdery mildew, stripe rust, etc.) is small, resulting in a large difference between the target traits of the selected offspring and the original target traits, which affects the efficiency of breeding

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Pedigree Selection Method for Wheat Breeding Improvement
  • A Pedigree Selection Method for Wheat Breeding Improvement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] According to the breeding objectives and the principle of parental combination.

[0039] F1: ① According to the combination of on-demand, 1.5 meters long two lines. ② Select panicle rows according to breeding objectives, consider luxuriance, plant height, disease resistance, and stress resistance, and divide F1 in the field into four grades: I, II, III, and IV grades. All spikes are reserved for grade I, 3 / 4 for grade II, 1 / 2 for grade III, and eliminated for grade IV. ③After threshing, the seeds were tested. During the test, the F1 seeds were reclassified into 1, 2, and 3 groups according to the size, fullness, and quality of the seeds, combined with the field level.

[0040] F2: ①On-demand according to the combination, according to the test results of F1 generation, generally 12, 24, and 36 lines. Each row is 18 meters long, the row spacing is 25 cm, and the plant spacing is 15 cm. Type 1 combination generally has 36 lines, type 2 combination generally has 24 lines...

Embodiment 2

[0051] According to the breeding objectives and the principle of parental combination.

[0052] F1: ① Each row has 100 rows. The width of the aisle in the middle of the row and row is 0.6m, 0.5m, 0.6m, 0.5m... intervals. ② The 0.6-meter-wide aisle is the aisle, and the 0.5-meter-wide aisle is the back aisle. Sow stripe rust-sensitive materials in the middle of the 0.5-meter-wide back aisle, and inoculate stripe rust mixed bacteria and stripe rust high-sensitivity materials in mid-March. ③Wait until May to observe the ability of the materials to resist stripe rust, and the susceptible materials will be eliminated directly.

[0053] F2: ① Each row has 180 rows. The width of the aisle in the middle of the row and the row is 0 meters, 1 meters, 0 meters, 1 meters... intervals. ② The 1-meter-wide aisle is the aisle, and the 0-meter-wide aisle is the back aisle. Sow stripe rust high-sensitivity materials in the middle of the 0-meter back aisle, and inoculate stripe rust mixed bac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a wheat breeding improvement pedigree selection method which is mainly characterized by spike selection and bunch planting, wherein plant selection is changed into spike selection and singe-row bunch planting is changed into bunch planting. The method greatly enlarges population of all hybrid generations, extends the scale of evaluation nursery, and improves the breeding efficiency. Bunch planting increases the field sowing density of wheat, enhances the selection strength on stress tolerance and disease resistance, and improves the adaptability of wheat.

Description

technical field [0001] The invention relates to the field of wheat breeding, in particular to a method for selection of pedigree for wheat breeding improvement. Background technique [0002] Wheat breeding means that people use gene recombination technology according to their own wishes to isolate excellent traits or gather various excellent traits through gene separation, free combination or chain exchange, and obtain the desired traits purposefully and in a planned way. New varieties of wheat. In breeding work, breeders usually use traditional pedigree selection method and mixed selection method for the selection of wheat hybrid offspring. These methods mostly use on-demand sowing, which covers a large area, and the groups of each generation are limited; the climatic conditions in the middle and late stages of wheat growth in northern Henan are suitable, and the occurrence of powdery mildew is very light, so it is impossible to select powdery mildew-resistant materials; ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/04
Inventor 闫素红李伟杨兆生刘旭
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap