Fuente: WIPO "tomato" The present disclosure discloses a method for improving a trait of a plant, including a step of mutating a BX13 gene and a BX14 gene. The mutation of the BX13 gene and the BX14 gene results in enhanced pest resistance, enhanced disease resistance, an increased ear size, an increased kernel size, an increased hundred-kernel weight, and an elevated yield of the plant, demonstrating significant application value in plant breeding.