植物生长调节剂对五指毛桃扦插生长的影响

Effect of Plant Growth Regulators on Growth of Ficus hirta Cuttings

采用双吉尔(生根粉)GGR、萘乙酸NAA和吲哚丁酸IBA3种植物生长调节剂,分别设置50、100、150、200、250、300 mg·L^(-1)6个梯度浓度溶液浸泡处理五指毛桃Ficus hirta插条基部8 h,以清水处理作为对照,研究不同浓度的植物生长调节剂对五指毛桃扦插生长的影响。研究结果表明:3种植物生长调节剂的各种浓度处理对五指毛桃扦插生长存活具有不同程度的促进作用,其中,GGR 150 mg·L^(-1)处理的插穗长势良好、根系发达、存活率最高,达89.67%,比对照组提高了48.00个百分点,且GGR处理的浓度为100~200 mg·L^(-1)时,插穗存活率可达80%以上;其次是NAA 100 mg·L^(-1)处理的插穗存活率达85%,比对照组提高了43.33个百分点;而IBA最好的浓度水平为50 mg·L^(-1),插穗存活率为83.67%,比对照组提高了42.00个百分点。从整体上看,GGR的促进效果比NAA和IBA好,NAA和IBA的较低浓度处理促进插穗生长存活效果显著,但当处理浓度为250 mg·L^(-1)以上时,促进效果较差,存活率偏低。

In this paper,the base of Ficus hirta cuttings were respectively immersed in the solution of plant growth regulators with GGR,NAA and IBA,each hormone was set 6 concentration gradients 50,100,150,200,250 and 300 mg·L^(-1) for 1 hour.With water treatment without adding any plant growth regulator as contrast,the effects of different plant growth regulators concentration treatments on growth of F.hirta cuttings were studied.The results showed that different concentrations of three plant growth regulators could promote the growth and survival of F.hirta cuttings to different degrees.Among them,the cuttings treated with GGR 150 mg·L^(-1) grew well,had developed roots and the highest survival rate,which was 89.67%,48.00%higher than the control group,and the survival rate of the cuttings reached more than 80%when the GGR concentration was between 100-200 mg·L^(-1).The cuttings treated with NAA 100 mg·L^(-1) had the second highest survival rate,which arrived at 85%,43.33%higher than the control group.The optimal concentration of IBA was 50 mg·L^(-1),and the survival rate of the cuttings was 83.67%,42.00%higher than the control group.On the whole,GGR worked better than NAA and IBA.For NAA and IBA,the treatment with lower concentration could significantly promote the growth and survival of the cuttings.But when the concentration of NAA and IBA was more than 250 mg·L^(-1),the survival rate of the cuttings was low,which indicated that the treatment of NAA and IBA with high concentration had a poor effect on the cuttings growth.