Germination of cloud forest native shrubs with potential for restoration in central Veracruz, Mexico

We recorded germination percentage, the number of days for the beginning of germination, and the 50% of germination. Our results showed an important difference in the germination response between both germination conditions of the eight species evaluated. The optimal conditions for germination for most species were constant light and temperature of 25°C provided by the germination chamber, as this was associated with high rates of germination and generally rapid seedling development. On the other hand, the conditions of the greenhouse, including the light and alternating temperatures, were unfavorable for most species, leading to low rates of germination and significant delays in the germination process. Although the pre-germinative treatment had no effect on the germination of the species, it might be necessary to conduct field-based germination experiments that consider factors such as water availability, soil moisture, and the effects of varying light intensities.

我们记录了供试8个物种的发芽率（germination percentage）、发芽始期以及50%发芽率达成所需的天数。试验结果显示，在所评估的8个物种中，两种萌发条件下的萌发响应存在显著差异。多数物种的最优萌发条件为萌发箱（germination chamber）提供的持续光照与25℃恒温环境，该条件下物种发芽率较高，且幼苗生长普遍更为迅速。与之相对，包含光照与变温的温室环境对多数物种并不适宜，会导致发芽率偏低且萌发进程显著延缓。尽管种子预萌发处理（pre-germinative treatment）对供试物种的萌发无显著影响，但仍有必要开展野外萌发试验，需综合考量水分可获得性、土壤湿度以及不同光照强度的影响等因素。