壳聚糖对长白落叶松和侧柏种子萌发的影响

Effects of Chitosan on Seed Germination of Larix olgensis and Platycladus orientalis

用0.5、1.0、1.5、2.0 g.L-14种浓度的壳聚糖溶液分别对长白落叶松和侧柏种子浸种处理18、24 h,对照为始温45℃清水浸种24 h、恒温25℃培养21、28 d。结果表明:经不同浓度的壳聚糖溶液处理后,长白落叶松种子发芽率、发芽势、平均发芽速率和发芽指数都有显著提高,以1.0 g.L-1壳聚糖浸种24 h效果最佳;侧柏种子发芽率、发芽速率以2.0 g.L-1壳聚糖浸种24 h后效果最好。

Larix olgensis and in0.5,1.0,1.5 and2.0g. Platycladus orientalis seeds were soaked with different concentration of chitosan solution L^-1 with 24 hours and 18 hours in order to find the optimal germinating condition. The results showed that the germination percentage, germination energy, mean germination time and germination index of Larix olgensis were significantly improved, and its optimal germinating condition was in 1.0 g · L^-1 of chitosan solution with 24 hours. The optimal germination percentage and mean germination time of Platycludus orientalis seeds were obtained under chitosan solution in 2.0 g · L^-1 with 24 hours.