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圆叶乌桕[Triadica rotundifolia(Hemsl.)Esser]是石灰岩地区次生林特有树种,该树种树形优美,叶形独特,秋季落叶前变红,是石灰岩山地极具应用前景的风景林树种。报道了不同种子处理方式对圆叶乌桕种子发芽率、发芽势和发芽势的影响。结果表明,应用98%H2SO4处理种子2min后清洗播种可显著提高圆叶乌桕种子的发芽率、发芽势和发芽指数,其它酸、碱、温水和人工破损种皮等处理方法虽然可提高种子的发芽率、发芽势和发芽指数,但效果不佳;90℃热水浸泡到自然冷却和10%硫酸处理种子12h等处理会直接伤害种子,因此种子萌发率低。该研究成果可为圆叶乌桕的开发利用及播种育苗工作提供参考资料。
Triadica rotundifolia (Hemsl.) Esser is a unique species of secondary forest in the limestone area. Its beautiful tree shape, unique leaf shape and reddening before autumn deciduous are the most promising forest tree species in the limestone mountains. The effects of different seed treatment methods on the germination rate, germination energy and germination potential of the seeds of Senecio arundinacea were reported. The results showed that the germination rate, germination potential and germination index of Septoria tazetta were significantly increased after seeds were treated with 98% H2SO4 for 2min, while the treatments of other acids, alkalis, warm water and artificial damaged seed coat could improve seed germination Rate, germination potential and germination index, but the effect was not good. 90 ℃ hot water immersion to natural cooling and 10% sulfuric acid treatment seed 12h and other treatment will directly damage the seed, the seed germination rate is low. The research results can provide reference materials for the development and utilization of Radix Aconitum and sowing nursery.