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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,准予推广。该品种的主要特点如下:
Zaoyou 504 is a plant derived from Octoploid Triticum aestivum L. from Shijiazhuang Institute of Agricultural Modernization and Northwest Institute of Botany, Chinese Academy of Sciences. Using a combination of distant hybridization, chromosome engineering and conventional breeding techniques, Precocious new wheat varieties. December 1993 approved by the Shaanxi Provincial Crop Variety Approval Committee, allowed to promote. The main features of this variety are as follows: