三磷酸腺苷对小麦种子萌发及幼苗生长发育的影响

Effects of Soaking Seed with Adenosine Triphosphate on Wheat Seeds Germination and Seedling Growth

为探究外源三磷酸腺苷(ATP)对小麦种子萌发及幼苗生长发育的影响,以鲁麦18种子为试验材料,通过ATP浸种处理,对小麦种子的发芽性状、生理特性及苗期农艺性状进行了研究。结果表明,小麦种子经(15~20 mg/L)ATP浸种处理后,发芽率和种子活力较对照处理均显著提高,提高幅度分别为5.83~10.00百分点,14.61%~30.52%,种子浸出液的相对电导率大幅度下降,过氧化物酶、脱氢酶和过氧化氢酶活性等均不同程度提高;不同浓度ATP浸种对小麦根系形态指标、根系活力及各器官干物质积累量均有不同程度的促进作用,但均在ATP浓度为20 mg/L时达到最大值,与对照相比,根系活力增加11.70%,地上部干质量增加17.32%,根系干质量增加24.15%。表明ATP浸种不仅可以提高小麦种子萌发性能,同时还能促进幼苗的生长,具有进一步的研究价值。

In order to explore the effects of adenosine triphosphate(ATP)on wheat seed germination and seedling growth,the wheat Lumai 18 were used to study the changes of germination traits,physiological characteristics and agronomical traits.The results show that,compared to no soaked seeds,seed germination percentage and seed vigor were increased by 5.83-10.00 percentage and 14.61%-30.52%when soaking seed by ATP with concentration between 10,20 mg/L.In addition,the electric conductivity rate of seed drenched solution was reduced obviously and the activities of peroxidase,dehydrogenase and catalase were increased at different degree.Different concentrations of ATP also promoted root morphological index,root activity and dry matter accumulation of various organs.Compared with control,root activity,shoot dry weight and root dry weight increased by 11.70%,17.32%,24.15%respectively when treated by ATP.All the above wheat growth indexes reached maximum at the ATP concentrations of 20 mg/L.In a word,wheat seed soaked by ATP could not only improve germination performance but also promote wheat seedling growth.Therefore,soaking seed with ATP has the value of further research.