The application discloses a SNP site, a
gene and application thereof related to a fast-growing and high-yield trait of Chlamys hirundo. EPDR1 The site is located at 3,885,288 of
chromosome 10 (chr10-3885288) of Chlamys hirundo, is in an
intron region of the
gene and shows T / C base polymorphism, and has significant correlation with the growth trait of Chlamys hirundo. EPDR1 Experimental results show that different genotypes of the site are significantly related to the shell height trait, and TT and TC
genotype individuals show obvious growth advantages. In addition, the experiment further proves that inhibiting the expression of the Chlamys hirundo
gene can promote the growth of the Chlamys hirundo. EPDR1 Based on the above finding, the SNP site and the gene where the SNP site is located can be used as a key
molecular marker and a key gene for breeding of a new Chlamys hirundo variety with fast growth and high yield, and can effectively improve breeding efficiency and accelerate the breeding process of a good variety.