不同类型小麦品种不同光合器官与籽粒产量的关系

本试验以6个不同类型小麦品种（系）为材料,通过对其剪叶、剪芒、包茎、包穗等不同处理,研究了不同光合器官对不同类型小麦品种籽粒产量的影响。根据各处理对穗粒重的影响可知,叶片光合与叶面积呈显著正相关,穗粒重随着叶面积的增加呈递增的趋势。穗光合在不同品种间存在很大差异,对两个中间型品种PH6200（8）、PH4133-2贡献较大,分别达到27.18%和22.77%,对多穗型品种泰山23的贡献较小,只有17.98%,而对大穗型品种的贡献则居中。茎鞘光合对大穗型品种泰山9818和多穗型品种济麦21、泰山23籽粒的影响较大,对中间型品种PH6200（8）、PH4133-2和大穗型品种山农8355影响较小。贮藏物质对籽粒的贡献以多穗型的两个品种最高,济麦21达到24.74%,泰山23更是高达38.46%,而对大穗型和中间型品种的贡献则相对较低,在15.9%～23.44%之间。芒对大穗型品种泰山9818、山农8355和中间型的PH6200（8）、PH4133-2有一定的贡献,其贡献率在4.21%～12.33%之间,而对多穗型品种济麦21和泰山23则贡献较低,尤其是泰山23,其贡献率仅为0.49%,几乎可以忽略不计。因此可以说不同类型品种的不同光合器官对籽粒产量的影响不同;不同类型品种的相同光合器官对籽粒产量的影响也存在显著差异,大穗型品种对穗粒重的贡献以叶片为最高,中间型品种以穗器官的贡献为高,多穗型品种则以茎鞘和贮藏物质的贡献最大。

Relationship of Different Photosynthetic Organ with Grain Yield of Different Wheat Varieties

Six wheat varieties were cut the leaf or awn or darkened the stem or ear to study the relationship of different photosynthetic organs with grain yield.The impact of different treatments on grain weight indicated that the leaf photosynthesis was positively correlated with leaf area,and the grain weight increased with the increase of leaf area.Ear photosynthesis contribution in different varieties was very different,that in order were middle-spike varieties,PH6200(8) and PH4133-2,with 27.18% and 22.77%;large-...