Molecular markers related to the number of ears per unit area of ​​wheat and their applications

By detecting SNP sites on wheat chromosome 4A and using KASP marker technology, the problem of low heritability of wheat spike number per unit area was solved, realizing an efficient breeding method that improved wheat spike number per unit area and yield.

CN118879917BActive Publication Date: 2026-06-30INSTITUTE OF CROP SCIENCE CHINESE ACADEMY OF AGRICULTURAL SCIENCES +1
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Patent Information

Application Number
CN202411174925.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-26
Publication Date
2026-06-30
Estimated Expiration
2044-08-26

AI Technical Summary

Technical Problem

In existing technologies, the heritability of the number of ears per unit area in wheat is low and affected by planting density, resulting in a limited number of genes that can be effectively used in breeding, making it difficult to effectively increase the number of ears per unit area to improve yield.

Method used

By detecting SNP sites (nucleotides G or T) on wheat chromosome 4A, KASP marker technology is used to identify or assist in identifying the number of wheat ears per acre, and breeding selection is carried out, selecting TT homozygous wheat as parents for breeding.

Benefits of technology

This technology enables rapid and accurate identification and breeding of wheat spikes per mu (unit of land area), increasing the number of spikes per unit area and enhancing the potential for wheat yield.

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Abstract

This invention discloses molecular markers related to the number of ears per unit area in wheat and their applications. This invention belongs to the field of biotechnology, specifically relating to molecular markers related to the number of ears per unit area in wheat and their applications. The method for identifying or assisting in the identification of the number of ears per acre in wheat includes detecting the genotype of a SNP locus in the genome of the wheat to be tested, and identifying or assisting in the identification of the number of ears per acre based on the genotype. The SNP locus is a single SNP locus on wheat chromosome 4A, with nucleotide type G or T, and is the 51st nucleotide of sequence 4 in the sequence listing. The number of ears per acre in the tested wheat with the SNP genotype TT is higher or a candidate higher than that in the tested wheat with the SNP genotype GG. The identification method and its primer composition of this invention can be used in wheat breeding and have broad application prospects.
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