Effects of Substrate and Plant Hormones on Rooting of Hibiscus rosa-sinensis Cuttings
By comparing the survival rate and root development of Hibiscus rosa-sinensis cuttings under different substrates,the suitable cultivation conditions for safflower cuttings were screened,which will provide a scientific basis for the propagation of safflower cuttings.In this study,four kinds of substrates of yellow soil,light-medium,peat soil and mixed soil(yellow soil:light medium:peat soil=2:4:4),three kinds of plant hormones of ABT,IBA and NAA,and three kinds of concentrations,250 mg/L,500 mg/L and 750 mg/L,were selected for the orthogonal test.The results showed that the root number,root length,rooting rate and root effect indices of safflower cuttings of mixed soil were 3.86,5.82 cm,87.50％and 1.84,respectively,which were significantly better than yellow soil,light-medium,peat soil(P<0.05).The root number,root length,rooting rate and root effect indices of safflower cuttings of ABT of 750 mg/L were the maximum,which was 5.06,6.54,87.89％and 2.68,respectively.The orthogonal test results showed that the optimal combination with the highest rooting rate of safflower cuttings was A1B3C3(using yellow soil as the substrate,soaked in 750 mg/L ABT for 30 s).This study investigated the differences in rooting rate and root development of Saf-flower cuttings under different substrate types,plant hormones and concentrations,which will provide technical support for the propagation of Safflowers variety.
Hibiscus rosa-sinensisplant hormonesrooting rateroot development
万方数据
维普
