GA对扁竹蓼硬枝和嫩枝水插繁殖的影响

Effect of GA on Penny Polygonum Cuttings Propagation in Water

为探讨扁竹蓼的水插繁殖效果和最佳赤霉素(GA)处理浓度,以扁竹蓼的硬枝和嫩枝为插穗,采用0 mg/L(清水对照)、50 mg/L、100 mg/L和150 mg/L的GA浸泡处理,对扁竹蓼进行水插繁殖研究。结果表明:GA对扁竹蓼的插穗生根具有促进作用。硬枝和嫩枝水插均以100 mg/LGA处理的生根效果最好,其生根率分别达到97.5%和100%,根系发育指数分别达到0.53和0.86,极显著高于其他处理。总体看,嫩枝水插繁殖效果优于硬枝,因此,扁竹蓼水插以嫩枝并以100 mg/L GA浸泡6h处理效果最佳。

Both stiff wood and twig of Penny Polygonum（Homalocladium Platycladpkkum） treated with different concentration gibberellin （GA） （0 rag/L, 50 mg/L, 100 mg/L and 150 mg/L） were used as cuttings to study the method of cutting propagation in water and the optimum GA concentration. The results showed that,GA could promote cutting rooting for Penny Polygonum; the rooting rates of both stiff woods and twig cuttings treated with 100 mg/L GA were up to 97.5 % and 100 %, respectively, higher than other treatments significantly. The root system development indexes of stiff wood and twig cuttings treated with 100 mg/L GA were up to 0. 53 and 0. 86,respectively, significantly higher than other treatments. Generally, the effect of the twig cuttings propagation in water was better than that of the stiff wood. So, for Penny Polygonum propagation in water, twig cuttings treated with 100 mg/L GA for 6 h could obtain the best effects.