一种与茎瘤田菁不定根原基性状相关的SNP标记及检测引物对和应用

By developing SNP molecular markers and designing specific primer pairs on chromosome 4 of sesquiterpenoid scab, the problem of locating and identifying adventitious root primordia of sesquiterpenoid scab was solved, enabling rapid breeding and efficient screening, which has significant breeding application value.

CN122146934BActive Publication Date: 2026-07-17INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
Filing Date
2026-05-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The lack of effective SNP molecular markers in existing technologies for the localization and identification of adventitious root primordia in stem nodules of Sesbania sesquiterpenes leads to high breeding costs, long cycles, and difficulty in achieving multi-gene aggregation and genetic gain.

Method used

A SNP molecular marker located at 10,433,968 bp on chromosome 4 of the reference genome of *Senecio scandens* was developed, and specific primer pairs (SEQ ID NO.1 and SEQ ID NO.2) were designed for PCR amplification and sequencing to identify the presence or absence of adventitious root primordia in *Senecio scandens*.

Benefits of technology

This method enables rapid identification of adventitious root primordia in stem-nodled sesbania, shortens the breeding cycle, improves screening efficiency, and has significant potential for breeding applications.

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Abstract

本发明公开了一种与茎瘤田菁不定根原基性状相关的SNP标记及检测引物对和应用,属于分子生物学技术领域。本发明基于SNP标记技术,开发了一种与茎瘤田菁不定根原基性状连锁的SNP标记及检测引物对。本发明通过对茎瘤田菁EMS诱变的突变体进行表型鉴定,对获得的不定根原基缺失突变体M‑1进行分离纯化、群体构建并结合遗传分析和Mutmap+定位不定根原基相关的SNP标记位于茎瘤田菁4号染色体上第10433968 bp处,涉C / T突变,当基因型为T时,茎瘤田菁无不定根原基。本发明SNP分子标记可在子叶期早期筛选F2群体,无需表型即可鉴定突变体与野生型,提高筛选效率、缩短育种周期,具有分子标记辅助育种价值。
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