浸种对2个毛红椿种源种子萌发和幼苗生长的影响

摘要

将2013年11月采集江西官山国家自然保护区和江西九连山国家级自然保护区里的毛红椿种子,2014年4月进行田间播种育苗实验,研究浸种时间对不同种源种子萌发和幼苗生长的影响.结果表明:在相同浸种时间下,官山种源的发芽率和苗高均大于九连山种源,但地径生长显著小于九连山种源;20 h浸种能显著提高毛红椿种子的发芽率和幼苗高生长,但对径生长无显著影响.%Seeds of Toona ciliata var. pubescens were collected in November 2013 in Guanshan National Nature Reserves and Jiulianshan National Nature Reserves, Jiangxi province, and were field sowed in April 2014. Experiments were conducted on different seed soaking time before sowing. The results showed that under same sowing time, germination rate and seedling growth of Guanshan provenance was greater than that of Jiulianshan one, but ground diameter was the opposite. Seeds soaked by 20 hours had better germination rate and seedling growth, but had no significant effect on ground diameter growth.