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[目的]探讨小麦烘干种子活力与其脱氢酶活性的相关性。[方法]以5个小麦品种(系)为试材,将新收小麦种子烘干,采用2种贮藏方式下贮藏1年,通过幼苗生长测定小麦烘干种子活力,采用氯化三苯基四氮唑法(TTC法)测定小麦种子脱氢酶活性。[结果](42±1)℃烘干对小麦新种子的发芽势、发芽率及幼苗生长无不良影响,室温密闭贮藏和低温(5～8℃)密闭贮藏2种贮藏方式的小麦烘干种子具有较高的发芽力,其发芽势、发芽率的差异不显著。不论是新种子还是在2种贮藏方式下贮藏1年的陈种子,小麦烘干种子的活力指数与其脱氢酶活性均呈显著正相关,苗干重、发芽势、发芽率、发芽指数与脱氢酶活性均呈正相关。[结论]脱氢酶活性可作为评定小麦烘干种子活力的指标之一。
[Objective] The research aimed to discuss the correlation between the activity of dried wheat seeds and its dehydrogenase activity. [Method] With 5 wheat cultivars (lines) as test materials, the newly harvested wheat seeds were dried, stored under two kinds of storage for 1 year, and the seed vigor of dried wheat seeds was measured by seedling growth. Tripchloride Determination of Wheat Seed Dehydrogenase Activity by Means of Toluene. [Result] The results showed that (42 ± 1) ℃ drying had no adverse effect on the germination potential, germination rate and seedling growth of new wheat seeds. The seeds were stored at room temperature in sealed condition and in cold storage (5 ~ 8 ℃) Has a higher germination power, the germination potential, the difference was not significant germination rate. The vigor index of dried seeds of wheat was significantly and positively correlated with its dehydrogenase activity, whether it was new seed or aged seed stored for one year under two kinds of storage methods. Dry weight, germination potential, germination rate, germination index Hydrogenase activity were positively correlated. [Conclusion] Dehydrogenase activity could be used as one of the indexes to evaluate the vigor of dried wheat seeds.