粒重对花生幼苗素质及内含物变化的影响

Effect of Grain Weight of Peanut on Seedling Quality and Inclusions

以四个花生品种种子为试材,采用水培方法,研究了粒重对花生种子萌发后幼苗农艺性状及内含物变化的影响。结果表明,同一品种不同粒重对花生种子萌发期胚芽、胚轴和根长度的影响存在差异但不显著,其幼苗干重间亦无显著性差异,而其残留物间存在显著性差异,表现为大粒种子>中粒种子>小粒种子。不同粒重种子幼苗根冠比值因品种的不同而存在差异,花育33、花育25和花育22根冠比值大小随粒重的变化趋势依次表现为小粒种子>中粒种子>大粒种子,而花育20大粒种子幼苗根冠比值最大,小粒种子次之,中粒种子最小。同一品种不同粒重种子幼苗建成后的物质转移量间差异不显著,但其物质转移率间存在显著性差异,其变化趋势为小粒种子>中粒种子>大粒种子。可溶性淀粉和可溶性蛋白质含量均以小粒种子的叶片和残留物中较高,而可溶性糖含量则以大粒种子叶片、根和子叶残留物中较高。

With seeds of 4 peanut varieties as materials, hydroponic experiment was carried out to reveal the relationship between grain weight and seedling growth. The results showed that with the change of grain weight in the same variety, the budlet axis and root length was different but did not reach significant difference. There was no significant difference among dry weight of seedling, but the difference was significant among the remnant as large grain〉medium grain〉small grain. The root- shoot ratio of seedlings of different grain weight was different among varieties. The root-shoot ratio variation tendency were as small grain〉medium grain〉large grain according to the grain weight of Huayu33, Huayu25 and Huayu22. However, the root-shoot ratio of Huayu20 was large grain〉small grain2〉medium grain. The translocation of matter had no significant difference among different weight grains of the same variety during the seedling stage, while the percentage of transloeation matter had significant difference, which showed the variation tendency as small grain〉 medium grain〉 large proteingrain. The content of starch and soluble protein of leaf and remnant was the highest in small grain, while the content of soluble sugar of leaf, root and remnant was the highest in large grain.