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甜单302是由中国农业科学院甜菜研究所育成的雄性不育单胚型多倍体杂交种。该品种由单胚二倍体雄不育系TB306-ms作母本,与多胚四倍体品系甜408-3作父本,按3∶1比例种植,自然杂交而成,只收获母本雄性不育系的单胚种子用于生产。在生产示范试验中,根产量、含糖率和产糖量分别比对照品种甜研303提高14.4%、0.26度和16.3%。该品种杂种优势强,丰产性好,含糖率高,较抗褐斑病,耐根腐病。适宜在黑龙江省的友谊、讷河、依安、呼兰、海伦等地种植。
Sweet single 302 is by the Chinese Academy of Agricultural Sciences beet research institute breeding male sterile single embryo polyploid hybrids. This variety was made from a single embryo diploid male sterile line TB306-ms as a female parent and crossed with a tetraploid tetraploid sweet 408-3 as a male parent and grown in a 3: 1 ratio to obtain only the female parent Single embryos of male sterile lines are used for production. In the production demonstration experiment, the root yield, sugar content and yield of sugar were increased by 14.4%, 0.26% and 16.3% respectively compared with the sweet varieties 303. The varieties of heterosis, high yield and good, high sugar content, resistance to brown spot disease, root rot resistance. Suitable for friendship in Heilongjiang Province, Nehe, according to Ann, Hulan, Helen and other places planted.