Résumé dans la langue de publication, traduction non disponible The invention provides a promoter capable of expressing an introduced gene in plant seeds, a vector comprising said promoter, a method for producing transgenic plants through transformation of plants with said vector, and a transgenic plant as transformed with said vector. After a suitable foreign gene and a terminator are linked to the promoter, the resulting vector may be introduced into seeds of barley or other plants, thereby intentionally modifying the seeds and making the resulting seeds produce foreign substances therein.