南北种源马齿苋种子在相同预处理条件下的萌发差异

为了提高优质蔬菜马齿苋的种子萌发速度和萌发率,并考虑南北种源的差异,进而找到合适的种源及最佳预处理条件,以热水、食醋、葡萄糖、赤霉素分别对来自北方和南方的种子进行预处理,其中各条件均选择一定梯度,处理后移入发芽培养基,对种子跟踪观察10d,每12h测定1次萌发数。结果表明:北方和南方种子在生活力上没有显著差异,但北方种子在自然条件下比南方种子更容易萌发;相同预处理条件下,北方和南方种子的萌发具有不同程度的差异;40℃热水和质量分数为2.5%的食醋是处理北方种子的最佳条件,而南方种子只有在40℃热水中浸泡才能达到理想的萌发率。

Seeds Germinate Difference between Northern and Southern Portulaca oleracea L. Under Same Pretreatment

In order to improve the germinative speed and percentage,considering the geographical differences,so as to find out the right seed resource and the best pretreatment.Hot water,vinegar,glucose,gibberellinare were used to treat on the seeds from North and South of China respectively.Appropriate gradients were selected for each condition.After the pre-treatment,the seeds were transferred into the germination medium,and then write down the germinative number every 12 hours for 10 days.The results showed that:th...