技术特征:1.与大白菜抗根肿病CRb基因紧密连锁的分子标记:TCR116,其特征在于,所述分子标记的核苷酸序列如下:TCR116:5'-CTATATACCATTTTACAAACACCAAAACTGTTAATAAACTAATCAGTTAAGAAGAGATAAGTTGTTTTAACACCTGTTGCTTTGGCGAAAATCAAAACCAAAACCAAAAAGGGTTTTGCCTTCTTCGAATCCCCAACCAAGCATCTCAACAATCATCTCATGGAAGTAGAACACTGACTCGCGTCCAACCATCTACACAAAAGTCTTTGACTTGATCAACAATCTACACAAAGCTAACGTGTAGAGACTATATAAACATTTACCATATCAGGGTCTAAGACATCGATTGCAAGCAGGCCAGCTCTGTCTTGAGGAACCACAATACTCGTGTTTGCGTCGAGAGTGATCGTTTTACCTGTTCCACATGAAAACGTTTCCTCAGAGAGCTTAAACAAAGCTAAAAGCTAATGACTTTTCTATAAAAAATGAAACTTTTTTTTTTGTTTACCAGTTGAAGGATCGAAGCGAGACCACATCTTTGTCCGAAACTCGTGGTCGGCACCGAAGATTCTGACCCAGACACGCTCTTCTTTCCCGGTGTCATGATCAACGGCGTTGAGAATCGAGCCGGCGATACCCGGGACGAGAAGAACCGGGTCGAGAGTCGGGTCAACGTAGGGTTTCTGGGTTGAAGTCTTGAGCTTTAGAAAGGTCTCTACTGA...