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前言烟草种子是种子世界中最小的种子之一,尤其是普通烟草种子,其千粒重只有0。025～0。05克,体内贮藏物质的含量很少,并且在低温季节播种,因此,若能使烟草种子在萌发时既经济有效地不利用贮藏物质,又在一定程度上提高幼苗的耐寒性,无疑会给培育壮苗带来积极的影响。发芽率是衡量播种品质的重要指标,也是种子分级定价的重要依据,而检验种子的发芽率与所采用的发芽方法很有关系。方法不同,其结果往往差异很大,有时会直接影响种子检验结果的正确性。可见,寻找提高烟草种子发芽率和幼苗耐寒能
Introduction Tobacco seeds, one of the smallest seeds in the seed world, especially ordinary tobacco seeds, have a thousand-grain weight of only 0.025-0.05 grams, little in vivo stored matter, and are planted in the cold season. Therefore, Tobacco seeds not only economically and effectively not utilize stored matter during germination, but also improve cold tolerance of seedlings to a certain extent, which will undoubtedly bring a positive impact on cultivating strong seedlings. Germination rate is an important indicator of sowing quality, but also an important basis for seed grading. The germination rate of tested seeds is closely related to the germination method used. Different methods, the results are often very different, sometimes directly affect the accuracy of seed test results. Visible, looking to improve the germination rate of tobacco seeds and seedlings cold hardiness