植物生长调节剂在马铃薯脱毒苗网室快繁中的应用研究

研究了几种常用植物生长调节剂配合使用对马铃薯脱毒苗扦插条生根及基础苗剪顶后腋芽萌发和生长的影响,结果表明:NAA 50 mg/L 2,4-D 1 mg/L GA33 mg/L生根液对促进脱毒苗扦插条生根的效果最好;KT与GA3混合喷雾对促进基础苗腋芽萌发生长有显著效果,KT和GA3的处理浓度分别为5 mg/L和3 mg/L时腋芽萌动率最高、生长最快,其中KT在促进腋芽萌动中起主导作用,而GA3则在伸长生长中起主导作用。

Study on application of plant growth redulators to the rapid-multipli cation of virus-free potato shoots in the screened insectproof house

The influence of some plant growth regulators applied constantly on the rooting of virus-free potato cuttings and the germination of axillary sprouts of basic seedlings that tops had been cut was studied.According to the results,NAA 50 mg/L 2,4-D 1 mg/L GA_3 3 mg/L is the best combination on promoting rooting of cutting in the 12 treatments.On the side of promoting germination and growth of axillary sprouts of basic seedlings,spraying treatments of KT and GA_3 mixed solution have significant effect.The best concentration is KT 5 mg/L GA_3 3 mg/L.In this condition,the ratio of germination of axillary sprouts is highest and the growth is fastest.KT and GA_3 have dominant effect on the germination and lengthways growth of axillary sprouts separately.