Effects of Sand Priming to Seed Germination and Vigor of Sweet Corn
Two sweet corn varieties (Wanyu 10, Antian 3) were selected as materials to study the effect of sand priming with different water contents to their germination and seed vigor.The result showed that not only indexes of seedling growth test including germination energy,plumule length, seedling fresh weight, seedling dry weight, germination index, vigor index, but also plumule fresh weight, plumule dry weight and simple vigor index of low temperature test were obviously increased by different sand priming treatments, while the mean length of incubation time was declined obviously. The effects of sand priming to electrical conductivity of sweet corn varieties were different. There were positive correlations between electrical conductivities and seed vigor index, seedling rate of simulated field condition in Wanyu 10, and negative correlations between them in Antian 3.Based on this experiment, the most suitable water content of sand priming base for the two sweet corn varieties was 7.4%.