BR和三唑酮对冬小麦产量及其生理效应的影响

Effect of Epi-Brassinolid and Triadimefon on Winter Wheat Yield and Its Physiological Response

以冬小麦品种豫麦10号为材料,在大田条件下研究了BR和三唑酮(Tria)对小麦产量的影响及其生理效应。结果表明,0.1μg/mL BR浸种可提高小麦叶片的净光合速率和耐病能力;0.1μg/mL BR浸种结合拔节期和开花后喷洒Tria,小麦旗叶、倒2叶和倒3叶净光合速率分别比对照提高12.2％,107.O％和188.4％;白粉病和锈病的发病程度降低;特别是穗粒数和千粒重增加较为突出,分别比对照增加2.3粒和3.4g;产量比对照增加20.13％。试验为高水肥条件下小麦高产稳产提供了一种有效的调控技术。

With wheat cultivar-'Yumei No. 10' as the testing material, the effect of epi-brassinolide(BR) and triadimefon(Tria) upon wheat yield increase and its physiological response was studied in the field conditions. Results indicated that applying seed soaking in 0.1 ^g/mL BR increased net photosynthesis rates and ability to endure diseases; and seed soaking in 0.1/ig/ mL BR and foliage spray Tria in the middle stage of jointing as well as in the late stage of blooming of winter wheat remarkably increased 12.2%, 107% and 188.4% of net photosynthesis rates of the flag, the upper 2th and 3th leaves higher than that in the control. Also, the incidence index of mildew and rust was reduced. Especially, grain numbers per spike and one thousand grain weight of wheat increased by 2.3 grains and 3.4 g. Yield increase is 20.13% higher than that in the control. As a result, the tests can provide a kind of effective regulation and control technique for the high and stable yields in wheat under high water and fertilizer conditions.