Forest and Grassland Resources Research >
Study on the Methods of Removing Dormancy and Promoting Seedlings of Tilia amurensis
Received date: 2019-10-15
Revised date: 2019-11-25
Online published: 2020-05-18
Different soaking methods,GA3 application and stratified germination experiments were used to study the dormancy removing methods of Tilia amurensis seeds.The results show that:warm water(7d)+GA3+Freezing(13-18℃,30d;Freezing,60d;-2-2℃,60d)was the best treatment combination,the germination rate and seedling emergence rate were 84.7% and 79.5%,the seedlings emerged neatly(whole seedling for 25 days);and the quality of seedlings was good,the one-year-old average seedling height and ground diameter were 0.55M and 0.56cm,the main root length was 25.5cm and the lateral root length was 25.GA3 soaking seed can promote the removing dormancy of Tilia amurensis seeds,the effect of stratification germination that the freezing effect of indoor high temperature+outdoor freezing+low temperature cellar is the best,followed by high and low temperature change,low temperature cellar effect again,and indoor heat is the worst.The results showed that Tilia amurensis belong to combinational dormancy,seed dormancy could be effectively removed by soaking seeds+GA3+reasonable stratification.
Key words： Tilia amurensis; stratification; remove dormancy; seedling raising; seedling quality
Youzhi HAN . Study on the Methods of Removing Dormancy and Promoting Seedlings of Tilia amurensis[J]. Forest and Grassland Resources Research, 2020 , 0(1) : 177 -182 . DOI: 10.13466/j.cnki.lyzygl.2020.01.023
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