小麦新品种早优５０４早优５０４是中国科学院石家庄农业现代化研究所和西北植物研究所以八倍体小偃麦为远缘亲本材料，采用远缘杂交、染色体工程与常规育种技术相结合的方法，选育出的一个特早熟优质小麦新品种。１９９３年１２月经陕西省农作物品种审定委员会审定，准予... As early as 504, a new wheat variety Zaoyou 504 was constructed by the methods of distant hybridization, chromosome engineering and conventional breeding, Breeding of a special precocious high-quality wheat varieties. December 1993 approved by the Shaanxi Provincial Crop Variety Approval Committee, granted ...