重金属镉对丝瓜种子萌发及根系活力的影响

采用水培法,研究了不同浓度的Cd2+对丝瓜种子的发芽率、发芽势、发芽指数、活力指数变化及根系活力的影响。结果表明:当Cd2+浓度为10mg/L时,发芽率和活力指数均高于对照;当Cd2+浓度为5mg/L时,根系活力高于对照;之后随着Cd2+溶液浓度的升高,发芽率、发芽势、发芽指数、活力指数、根系活力均显著降低,抑制效应逐渐增强;说明低浓度的Cd2+对丝瓜种子萌发具有促进作用,高浓度的Cd2+则具有抑制作用。

Ribbed towel gourd seed germination

The influence of different conditions on ribbed towel gourd seed germination was tested in this paper. Results showed that the seeds germinating energy and germination percentage were increased evidently under the treatment of dipping in normal water temperature for 4 hours and drying out for 1 hour at 30℃.

打赢退休转折攻坚战

2016年3月,组织上批准我退休。本以为在部队和地方工作,辛苦奋斗了大半辈子,可以停下来歇歇脚,过上清闲自由的晚年生活,不承想,退休几个月后,我身体出现了不适,先是心神不宁,焦躁不安,心里空落落的,继而记忆力明显下降,反应也变得迟钝,写字手还发抖,横不平,竖不直,弯折难到位。