【摘要】 【目的】种子贮藏方法是种子长期保存的一个重要因素。本研究旨在探讨冷冻处理对不同含水量的甜菜种子发芽势和发芽率的影响。【方法】以多胚二倍体糖甜菜种子(Y3)、多胚二倍体红甜菜种子(R39)、单胚不育系糖甜菜种子(B1-3)为试验材料，将原始含水量12%的甜菜种子烘干至10%、8%和6%,经过冷冻处理后进行发芽试验。探讨不同含水量的甜菜种子经冷冻处理后对种子萌发的影响，寻找适宜甜菜种子冷冻保存的含水量范围。【结果】在含水量为6%时，多胚二倍体红甜菜种子(R39)的发芽势和发芽率在5%水平下与对照差异显著，比原始含水量(12%)的甜菜种子发芽势和发芽率降低14.67和9.33个百分点，其他处理之间差异不显著。在含水量为8%和10%时，这3类甜菜种子的发芽势和发芽率均无显著差异。【结论】综上所述，甜菜种子的含水量在6%～10%时进行冷冻处理，对甜菜种子的发芽势和发芽率影响较小。更多还原

【Abstract】 【Objective】 The methods for seed storage are important part of the long-term seed preservation. This study aims to investigate the effect of freezing treatment on the germination potential and germination rate of sugar beet seeds with different moisture contents.【Methods】Polyembryonic diploid sugar beet seeds(Y3), polyembryonic diploid red beet seeds(R39), and monoemvryonic male-sterile sugar beet seeds(B1-3) were used as experimental materials. The original moisture content of the beet seeds(12%) was dried to 10%, 8% and 6%, and germinated after freezing, to explore the effect of freezing treatment on the germination of beet seeds with different moisture content, and to find the optimal moisture content range for freezing storage of beet seeds.【Results】At the moisture content of 6%, the germination potential and germination rate of polyembryonic diploid red beet seeds(R39) were significantly different at the 5% level, compared to the control, with a reduction of 14.67 and 9.33 percentage points from the original water content(12%). No significant difference to other treatments was observed. There were no significant differences in germination potential and germination rate of the three categories of sugar beet seeds at 8% and 10% moisture contents. 【Conclusion】In conclusion, freezing treatment of beet seeds with moisture contents ranged from 6% to 10%, and little influence on their germination potential and germination rate was observed.更多还原