板蓝根种子的吸水特性及发芽条件研究

Studies on the character of water absorption and the germination conditions of Isatis indigotica seeds

关键词:  板蓝根种子  吸水  萌发  发芽率

Key words:  Isatis indigotica seeds  water absorption  germination  germination rate

摘要:

采用室内测定方法,对板蓝根种子的吸水特性及不同处理下种子的发芽率、发芽势和相对活力指数等进行比较研究。结果表明,板蓝根种子具有快速吸水的生物学特性,分为快速吸水期、缓慢吸水期和缓慢吐水期三个阶段,入水后2 h的吸水量达最大吸水量的73.29%,为快速吸水阶段; 温度对板蓝根种子的萌发影响较大,最适发芽温度为30 ℃。光照、发芽床和种子预处理对板蓝根种子的萌发无明显影响。这说明板蓝根种子的萌发主要取决于水分和温度。

Abstract:

The research mainly focused on the character of water absorption of Isatis indigotica seeds indoors,and compared the germination rates,germination power and relative vigor index under different treatments. The results showed that the seeds had the biological characteristics of rapid water absorption,the water absorption period was divided into three stages:faster water absorption stage,slow water absorption stage and slow guttation stage. The water absorption of seeds reached the maximum 73.29% after 2 h into the water,showing this was faster water absorption stage. Temperature had great effect on the germination of I.indigotica seeds,and the optimal temperature was 30 ℃,while light,germination bed and pre-treatment on seed bring little effect on the germination,indicating that the germination of I.indigotica seeds depent primarily on moisture and temperature.