ABSTRACT

Scots pine is the main forest forming species in Poland. Despite the great importance of natural reconditioning of forest trees, a substantial source of reforestation is the nursery production of seedling material. Pre-sowing seed conditioning, consisting of chemical and physical treatments, is commonly used to improve seed quality as well as to advance uniform development and increase plant efficiency. The influence of semiconductor laser irradiation wavelength on Scots pine seeds (Pinus sylvestris L.) was tested in both laboratory and pot experiments. Irradiation rates used in trials were (D3) three-, (D6) six- and (D9) nine-fold of the basic rate of 2.5·10⁻¹ J·cm⁻² with a control (D0) of non-irradiated seeds. Irradiation accelerated emergence and increased seedling numbers. The germination energy and capacity of tested Scots pine genotypes were reduced under higher (D6) doses of laser irradiation. Stimulation of morphological traits and increase in chlorophyll contents was observed under the lowest (D3) irradiation rate, while an increase in polyphenol contents occurred under the highest, nine-fold rate of irradiation.

摘要

欧洲樟子松是波兰主要的造林树种。尽管森林树木的自然修复非常重要，但重新造林的一个重要来源是苗木的苗圃生产。播种前种子调理包括化学和物理处理，通常用于提高种子质量以及促进均匀发育和提高植物效率。通过室内试验和盆栽试验测试了半导体激光辐照波长对樟子松种子的影响。^{试验中使用的辐照率是基本辐射率 2.5·10 -1} J·cm ^-2的 (D3) 三倍、(D6) 六倍和 (D9) 九倍与未辐照种子的对照 (D0)。辐照加速了出苗并增加了幼苗数量。在较高 (D6) 激光照射剂量下，受试苏格兰松基因型的发芽能量和发芽能力降低。在最低 (D3) 辐照率下观察到形态性状的刺激和叶绿素含量的增加，而在最高的九倍辐照率下多酚含量增加。