食盐溶液对青稞种子的引发效果

A Study on the Priming Effect of Salt Solution on the Hulless Barley Seeds

【目的】明确不同质量浓度食盐溶液对青稞种子的引发效果。【方法】选用6个青稞品系,以0(CK)、0.025、0.050、0.075和0.100 g/mL共5个质量浓度的食盐溶液,各浸种1、2、3、4、5和6 h,对青稞种子进行引发处理,再通过标准发芽试验,测定青稞种子的发芽特性。【结果】食盐溶液对青稞种子有明显的引发效果,随着食盐溶液质量浓度的提高以及浸种时间的延长,青稞种子发芽特性先逐渐变好,然后再逐渐变差。【结论】0.025 g/mL的食盐溶液浸种3 h的引发效果最好,可使青稞种子发芽迅速整齐,并长成健壮幼苗。在青稞种子播种实践中采用此法可有效提高田间出苗率和整齐度,保证出苗齐全。

[Purpose]To determine the effect of salt solution on the seed priming.[Method]Six of hulless barley lines were selected in this study.The seeds were soaked in salt solution which mass concentration were 0(CK),0.025,0.050,0.075 and 0.100 g/mL in 1,2,3,4,5 and 6 h,respectively.And then the germination characteristics of hulless barley seeds were determined and the priming effect of salt solution on the seeds of hulless barley was studied by using the standard germination test after washed out the seeds.[Result]The salt solution had obvious priming effect on the highland barley seeds.With the increase of salt solution mass concentration and the soaking time,the germination characteristics of hulless barley seeds improved gradually at first,and then deteriorated gradually.[Conclusion]Comprehensive analysis results show that the priming effect of 0.025 g/mL salt solution soaking for 3 h was the best,the seeds of hulless barley germinated rapidly and neatly,and grew into strong seedlings,which could be applied in the practice of hulless barley sowing and could be the foundation of high yield planting on hulless barley.This method can be used to improve the field emergence rate and uniformity and to ensure complete seedling emergence in hulless barley seed sowing practice.