高产、优质、多抗棉花新品种石远321是河北石家庄农科院与中科院遗传所协作,用陆地棉、海岛棉、野生瑟伯氏棉三个棉种进行远缘杂交,通过激素处理,杂种幼胚离体培养、染色体加倍使其恢复育性,再经回交转育,南繁北育、异地鉴定,历经近20个世代选育而成。 Shiyuan 321, a new cotton variety with high yield, high quality and multiple resistance, is a crossbreeding cross between Hebei Shijiazhuang Academy of Agricultural Sciences and the Institute of Genetics of Chinese Academy of Sciences, using three cotton varieties of upland cotton, island cotton and wild Cerberus cotton. Through hormone treatment, The immature embryos were cultured in vitro and the chromosomes were doubled to restore their fertility. Then they were backcrossed and transplanted, and were propagated in the south and north, and identified in different places for nearly 20 generations.