杂种落叶松种子生殖特性及早期生长特性研究

杂种落叶松和其它落叶松种子通过田间对比试验,对发芽率和生长量等指标进行测定,结果表明：杂交落叶松种子千粒重为4.2g,发芽率为28.7%,两年生平均苗高为70.7 cm,平均地径为8.1mm,杂种落叶松和其他纯种落叶松间均存在显著差异。日×长组合发芽率较高,但干形、生长较差。日×兴组合发芽率较低,但干形较好,生长量较大。

Study on Hybrid Larch in Seed Reproductive Characteristic and Early Growth Performence

The seed contrast test on hybrid larch and other purebred larch were conducted,germination and growth characteristics were determined,the results showed that 1000-grain weight of hybrid larch was 4.2g,germination was 28.7%,seedling height and ground diameter within 2 years could reach 70.7cm and 8.1mm,there were significant difference between Hybrid and purebred larch.germination of Japanese×Korean was higher,but stem form and growth were worse,germination of Japanese×Chinese was lower,but stem form and growth were worse, germination of Japanese × Chinese was lower, but stem form and growth were better.