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甜研３０６（原组合代号８４０９）系以二倍体多粒种雄性不育系ＭＳ２０１４Ａ为母本，两个多粒型四倍体品系４０１和４０９为父本杂交而成的三倍体雄性不育杂交种，该品种经过１９８５～１９８６年所内小区试验，１９８８～１９８９年“七五”国家品种攻关区域试验和１９９０年生产示范，具有丰产性好、含糖率高、抗（耐）褐班病和根腐病能力较强，以及适应性强等优点，属于标准偏丰产型品种，产质量表现均优于当地对照品种。
Sweet research 306 (original code 8409) is a diploid multiple male sterile line MS2014A as the female parent, two multi-tetraploid tetraploid lines 401 and 409 as the male parent triploid male The crossbred hybrids were tested in the plots from 1985 to 1986, from 1988 to 1989 in the “Seventh Five-Year” national variety research project and in 1990 production demonstration. The cultivars with high yield, high sugar content and resistance to browning The ability of disease and root rot is strong, and the adaptability is strong. It belongs to the standard overbased yield varieties, and the yield and quality performance are superior to the local control varieties.