摘要
Abstract
Some different effects on the seed germination of Hypericum longistylum, basing on the study of temperature,light, acid, alkali, and salt by comparative experiment. It also provides a theoretical basis for its artificial propagation. The research shows that:Light can promote the seeds germination. The effects of different temperature treatments on seed germination of Hypericum longistylum were significant, and the germination rate was the highest at 20℃. The germination rate increased significantly at 25 mmol/L Na2 CO3 and pH 5. 0,pH 5. 4 and low temperature stratification treatment. The germination rate was normal under salt stress,but it decreases with the increase of salt concentration;The germination rate was promoted under the condition of alkali stress,and it increased first and then decreased with the increase of alkali concentration,the germination rate was 74％ at 10 mmol/L Na2 CO3;Under the condition of acid stress,germination could occur normally,and the germination rate gradually increased with the decrease of pH,the germination rate reached 72％ at pH 4. 6.关键词
长柱金丝桃/层积处理/温度/光照/酸碱盐胁迫/种子萌发Key words
Hypericum longistylum/stratification treatment/temperature/light/acid/alkali and salt stress/seed germination分类
农业科技
