A kasp molecular marker closely linked to wheat spikelet number qtl and application thereof

By developing the KASP molecular marker QTLQSns.sau-SW-2B.2 for wheat spikelet number, and using real-time PCR technology, the problem of spikelet number identification in wheat breeding was solved, achieving efficient screening and improving breeding efficiency, significantly increasing spikelet number, and promoting the breeding of high-yielding wheat varieties.

CN122279079APending Publication Date: 2026-06-26SICHUAN AGRI UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN AGRI UNIV
Filing Date
2026-04-15
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The lack of molecular markers for closely linked wheat spikelet number QTLs in existing technologies leads to low wheat breeding efficiency, making it difficult to effectively improve spikelet number through genotype selection and thus affecting yield improvement.

Method used

We developed a KASP molecular marker closely linked to the wheat spikelet number QTL QSns.sau-SW-2B.2, and used the KASP primer set for quantitative real-time PCR to rapidly screen and identify plants with spikelet number QTLs, thereby improving breeding efficiency.

Benefits of technology

It enables accurate and efficient detection and screening of spikelet number, significantly increases spikelet number, improves the selection and identification efficiency of high-yield wheat varieties, and provides a theoretical basis for the genetic analysis of spikelet number.

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Abstract

This invention discloses a KASP molecular marker closely linked to a QTL for spikelet number in wheat and its application, belonging to the fields of molecular biology and crop genetics and breeding technology. This invention is the first to disclose a QTL for spikelet number in wheat. QSns.sau‑SW‑2B.2 Located on the short arm of wheat chromosome 2B, this marker significantly increases the number of wheat spikelets. This invention also discloses a KASP molecular marker closely linked to the wheat spikelet number QTL. This marker can be used to rapidly screen plants with the wheat spikelet number QTL, improving the breeding efficiency and accuracy of multi-spikelet-number and high-yielding wheat varieties, and providing a theoretical basis and technical support for the genetic analysis of wheat spikelet number.
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