Effects of Different Hormone Types, Concentrations and Soaking Time on Cutting Rooting of <i>Xanthostemon chrysanthus</i>
Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (6): 1084-1091.DOI: 10.3969/j.issn.1000-2561.2020.06.003

• Crop Culture and Nutrition, Genetic BreedingCrop Culture and Nutrition, Genetic Breeding • Previous Articles     Next Articles

Effects of Different Hormone Types, Concentrations and Soaking Time on Cutting Rooting of Xanthostemon chrysanthus

ZHANG Peijian,GAO Liqiong,SHANG Xiuhua()   

  1. China Eucalypt Research Centre, Zhanjiang, Guangdong 524022, China
  • Received:2019-09-11 Revised:2019-10-10 Online:2020-06-25 Published:2020-07-30
  • Contact: SHANG Xiuhua

Abstract:

Taking semi-lignified branches of Xanthostemon chrysanthus as the cutting and loess+sand (1∶1) as thesubstrates, the effects of different hormone types, concentrations and soaking time on the rooting of X. chrysanthus cuttings was studied by the orthogonal experiment. The most suitable treatment for the rooting was obtained, which would providea theoretical basis and technical support for its cutting propagation. The rooting was mainly in the cortical tissue. The survival rate of cuttings was over 90%. Hormone concentration was the most important factor affecting the rooting, followed by hormone types, and soaking time had the least effect. Range analysis showed that the most suitable factor combination for cutting rooting rate was A2B2C3 (500 mg/L IBA soaked for 2 minutes) or A2B3C1 (200 mg/L IBA soaked for 30 minutes). The most suitable combination for cutting rooting number was A1B1C1 (1000 mg/L NAA soaked for 30 minutes), and A3B3C2 (200 mg/L “Gentaiyang” rooting agent soaked for 10 minutes) was the most suitable for cutting rooting length, the most suitable combination for longest rooting length was A2B1C2 (1000 mg/L IBA soaked for 10 minutes), and the most suitable combination for cutting rooting index was A1B1C1 (1000 mg/L NAA soaked for 30 minutes). The results of principal component analysis combined with range analysis of rooting effect index showed that A1B1C1 (1000 mg/L NAA soaked for 30 minutes) and A1B2C2 (500 mg/L NAA soaked for 10 minutes) were the better combination for survival and rooting. In a word, X. chrysanthus was a plant relatively easy to be used as cuttings. The experimental results could provide a reference for cutting propagation of X. chrysanthus in future production.

Key words: Xanthostemon chrysanthus, cutting propagation, orthogonal design, hormone

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