Molecular marker relevant to laying duck egg laying performance and application thereof in breeding

The invention relates to a molecular marker relevant to the laying duck egg laying performance and application thereof in breeding, and belongs to the technical field of molecular markers. The nucleotide sequence of the molecular marker is shown as SEQ ID NO.1; the 108-th site position in the sequence has a C>T mutation; the site has the obvious relevance with the duck egg laying starting day age,the 34-week-age egg laying quantity and the 72-week-age egg laying quantity; the egg laying starting day age of the TT gene type is obviously lower than that of the CC and CT gene type; the 34-week-age egg laying quantity of the TT gene type is obviously higher than that of the CC gene type; the 72-week-age egg laying quantity of the TT gene type is obviously higher than that of the CC and CT gene type; through PCR amplification and product sequencing typing, the TT gene type duct can be selected. The molecular marker realizes the early stage breeding on the duck egg laying performance; the powerful help is provided