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探讨液体引发、水引发对甜玉米种子萌发及活力的影响。将甜玉米种子进行水引发、KNO3引发、KNO3与KH2PO3混合溶液引发,引发时间分别为6,12,24 h,然后进行发芽试验,测定发芽率、芽鞘长及幼苗单株鲜重并计算种子简易活力指数。结果表明,3种引发方式对种子的发芽率影响不大,均能促进芽鞘和单株幼苗的生长及种子活力的提高,对芽鞘和幼苗单株鲜重的影响依次为:KNO3与KH2PO3混合溶液引发>KNO3引发>水引发;对种子活力的影响依次为:KNO3与KH2PO3混合溶液引发>水引发>KNO3引发。引发的最佳组合为:KNO3与KH2PO3混合溶液浓度0.5%~1.0%,引发12 h可促进芽鞘长度、幼苗单株鲜重、种子活力达最高,分别为4.76 cm,0.85 g,46.59,增幅达最大分别为73.72%,31.09%,17.49%。为甜玉米种子引发技术的研究与应用提供了理论依据。
The effects of liquid initiation and water initiation on seed germination and vigor of sweet corn were investigated. The seeds of sweet corn were induced by water, KNO3, KNO3 and KH2PO3 mixed solution. The initiation time was 6, 12 and 24 h respectively. Then germination test, germination rate, Simple vitality index. The results showed that the three kinds of priming methods had little effect on the germination rate of seeds, both of which could promote the growth of germination sheaths and single seedlings and the seed vigor. The effects of KNO3 and KH2PO3 The mixed solution induced> KNO3-induced> water-induced; the effect on seed vigor was as follows: KNO3 mixed with KH2PO3 solution induced> water-induced> KNO3-induced. The optimum combination was as follows: the concentration of KNO3 and KH2PO3 mixed solution was 0.5% ~ 1.0%, the shoot sheath length was increased after 12 h of priming, seedling weight per plant was the highest, and seed vigor reached the highest (4.76 cm, 0.85 g, 46.59, respectively) Up to a maximum of 73.72%, 31.09%, 17.49% respectively. It provided the theoretical basis for the research and application of sweet corn seed priming technology.