滨海盐碱地条件下不同小麦品种（系）花后旗叶可溶性物质、灌浆速率及产量因素的分析

为研究滨海盐碱地对小麦产量的影响,选取8个小麦品种（系）在大田盐碱地上种植,并对其花后旗叶可溶性物质、灌浆速率的动态变化及单位面积穗数、千粒重、穗粒数等产量形成因素进行研究。结果表明,8个小麦品种（系）的可溶性物质、灌浆速率及产量等呈现不同的差异性。盐碱条件下随时间的延长可溶性蛋白含量降低,可溶性糖含量升高,灌浆速率呈单峰曲线变化趋势;盐碱条件下品种间穗粒数、千粒重差异不显著,而单位面积穗数差异显著。

Analysis of Soluble Substances,Filling Rate and Yield of Wheat under the Coastal Saline at Post Floral Stage

In order to study the effect of coastal saline on wheat yield, eight wheat varieties were planted in saline-alkali soil under farming field conditions. The experiment studied the dynamic changes of flag leaf soluble substances and the grain filling rate at post floral stage, as well as the factors of yield formation, such as the spike number, thousand-grain weight and the grain number per spike. The results suggested that the soluble substance, grain filling rate and the yield showed varying differences among these eight wheat varieties. Under saline-alkali stress, the content of soluble protein reduced, instead, the soluble sugar content increased, and the filling rate showed a single peak curve trend over time. The differences in grain number per spike and 1000-grain weight were not significant among varieties, but there was significant difference in spike number under coastal saline.