烯效唑对小麦幼苗生长发育的影响

目的]研究烯效唑对小麦幼苗生长发育的影响。方法]用0、20、40、60mg／L烯效唑对小麦种子浸种24h，以蒸馏水作对照。然后用水培法对幼苗进行栽植与培养，之后再用广口瓶法测定幼苗的呼吸强度，用TIC法测定幼苗的根系活力，通过对幼苗株高、根长、根数、根／冠比的测定研究幼苗的形态指标，用分光光度法对幼苗叶片叶绿素的含量进行测定，通过测定MDA含量研究幼苗叶片的抗性。结果]烯效唑能影响小麦种子呼吸强度，促进其根系活力，抑制茎的生长并促进根的发育，此外，烯效唑还能使幼苗叶绿素含量增多，增强幼苗抗性。但是，不同浓度烯效唑对幼苗的影响也不同。结论]该研究可以为进一步拓展烯效唑在大田作物上的开发应用前景提供理论依据。

Influence of Uniconazole on the Growth of Wheat Seedling

Objective] The aim was to study the influence of uniconazole on the wheat growth and development.Method] Using 0,20,40,60 mg/L uniconazole to soak seeds for 24 h,comparing with distilled water,then applying water training method for planting and cultivation of seedlings,and then determining seedlings after jars respiration rate,using the TTC method to determine root activity,through the seedling height,root length,root number,and root / crown ratio to measure morphological characters of seedlings,seedlings with spectro-photometric chlorophyll content was determined,and the concentration of MDA measured resistance seedlings was measured.Results] The results showed that: uniconazole can affect the respiration of wheat seed,promote its root activity,inhibite stem growth and promote root development.In addition,uniconazole can also increase the chlorophyll content,and enhance seedling resistance.However,different concentrations of uniconazole on seedling influence are different.Conclusion] The study can provide theoretical basis for the development of uniconazole on the field.