不同溶液浸泡处理对五种蔷薇属植物发芽率的影响

为提高弯刺蔷薇、疏花蔷薇、黄刺玫、刺梨和宽刺蔷薇种子的发芽率,采用萘乙酸（NAA）、赤霉素（GA）、高锰酸钾（KMnO4）、室温清水和45℃清水处理低温沙藏2个月的种子。对弯刺蔷薇1号（海拔约1 500m处采集）,100 mg/L GA浸泡24 h发芽率最高,可达57.33%;对弯刺蔷薇2号（海拔约600 m处采集）,清水室温浸泡24 h即可获得最佳发芽率84.00%。对疏花蔷薇,各处理（NAA、GA、KMnO4和室温清水浸泡）差异不显著。45℃温水浸泡24 h强烈抑制上述2种蔷薇的萌发。在各种处理下,黄刺玫、刺梨和宽刺蔷薇的发芽率都低于7.00%,且各处理之间差异不显著。

Effects of different solutions on germination capacity of Rosa Seeds

To improve seed germination rates of Rosa beggeriana,Rosa laxa,Rosa xanthina,Rosa roxburghii and Rosa platyacantha,NAA,GA,KMnO4 or water were used to treat seeds which had been stored at low temperature for 2 months.For Rosa beggeriana collected at an altitude of about 1 500 meters,seeds soaked in 100 mg/L GA and reached the highest germination rate of 57.33%;for Rosa beggeriana collected at an altitude of about 600 meters,seeds soaked in water at room temperature and reached the highest germination rate of 84.00%.But for Rosa laxa,there were no significant differences among different treatments(NAA,GA,KMnO4 or water at room temperature).However,germination rates of these two Rosa seeds were highly inhabited by 45℃ water treatment.And it was also observed that germination rates of Rosa sxanthina,Rosa roxburghii and Rosa platyacantha were below 7.00% under all conditions and there were no significant differences among all the treatments.