Molecular marker remarkably associated with coix seed shell thickness and application of molecular marker

The invention relates to the technical field of biology, in particular to a molecular marker remarkably associated with the thickness of a coix seed shell and application of the molecular marker. The molecular marker is 1bp insertion-deletion mutation of large black mountain coix lacryma-jobi and small white shell coix lacryma-jobi at a No. 8 false chromosome 13453057bp. The invention provides an Insertion-deletion (Idnel) molecular marker obviously associated with the thickness of a coix seed shell, when the genotype of the molecular marker is homozygous insertion, the seed shell is thin, and when the genotype of the molecular marker is homozygous deletion, the seed shell is thick. Therefore, the method can be used for assisting in selecting thin-shell coix seeds. 本发明涉及生物技术领域，具体涉及一种与薏苡种壳厚度显著关联的分子标记及其应用。该分子标记为大黑山薏苡与小白壳薏苡在8号假染色体13453057bp处的1bp插入-缺失突变。本发明提供了一种与薏苡种壳厚度显著关联的插入-缺失(Insertion-deletion，Idnel)分子标记，该分子标记基因型为纯合型插入时，种壳薄，基因型为纯合型缺失时，种壳厚。因此可用于辅助选择薄壳的薏苡品系。