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种子在吸胀萌动期间有明显溶质外渗现象。本实验结果表明:抗旱性不同的小麦品种,水浸液中可溶性糖含量差异显著;电导率与可溶性糖呈负相关与浸提时间呈高度正相关。品种间可溶性糖相对渗出率有明显的规律,抗旱性较强的品种其相对渗出率低,抗旱性较弱的品种其相对渗出率高;电导率与浸提时间的相关系数也有明显规律,抗旱性较强的相关系数小,抗旱性较弱的相关系数大。因此可考虑将可溶性糖相对渗出率、电导率与时间的相关系数作为抗旱性鉴定的指标。
Seeds during imbibition germination obvious solute extravasation phenomenon. The results showed that there was a significant difference in soluble sugar content between wheat varieties and water extracts with different drought resistances. The negative correlation between conductivity and soluble sugar was highly positively correlated with the extraction time. The relative exudation rate of soluble sugar in cultivars had obvious rules. The varieties with stronger drought resistance had lower relative exudation rate and higher relative exudation rate in the varieties with weaker drought resistance. The correlation coefficient between conductivity and extraction time was also significant The law, drought resistance stronger correlation coefficient, drought resistance weak correlation coefficient. Therefore, we can consider the relative exudation of soluble sugar, conductivity and time correlation coefficient as an indicator of drought resistance identification.