Effects of auxin and nutrient solution concentration on rooting of Jasminum sambac cutting under hydroponics

ObjectiveThe Effects of type and concentration of auxin and nutrient solution on Jasminum sambac branches rooting were explored for large-scale hydroponic Jasminum sambac production. MethodCuttings of Jas-minum sambac were soaked in three concentrations of auxin (IAA,IBA and NAA) and water (no auxin),followed by cultured in three concentrations of nutrient solution(1/4,1/2 and 0) to explore the effects of auxin and nutrient solution on cutting. ResultRooting rate was 100% and total root length and root surface area were the largest with 250.0 mg/L NAA, significantly higher than those in other treatments (P<0.05,the same below). Rooting rate and average root di-ameter were greater in 350.0 mg/L IBA than in IAA. Rooting rate of Jasminum sambac cutting in a combination of 250.0 mg/L and 350.0 mg/L NAA with 1/4 nutrient solution was 100.00% and 80.00%, respectively. Conclusion250.0 mg/L NAA combined with nutrient solution of high concentration is most favorable for rooting, and 350.0 mg/L NAA combined with nutrient solution of low concentration is most suitable for root growth.