Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (14): 52-58.doi: 10.11924/j.issn.1000-6850.casb20191100875

Special Issue: 园艺

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Different Rooting Powder Concentrations: Effects on Budding and Rooting of Cutting Segments in 5 Woody Plants

Jiang Yudong(), Xiong Youqing, Zhang Junmin()   

  1. Laboratory of Plant Tissue Culture Technology of Haidian District, Beijing Engineering and Technological Research Center of Plant Tissue Culture, Beijing 100091
  • Received:2019-11-19 Revised:2020-01-24 Online:2021-05-15 Published:2021-05-19
  • Contact: Zhang Junmin E-mail:jydspring@126.com;fenghuang1975@sina.com

Abstract:

In recent years, 5 woody plants with elite ornamental traits and broad environmental adaptability, namely Caryopteris mongholica Bunge, Caryopteris×clandonensis. ‘Worcester Gold’, Hippophae rhamnoides Linn., Elaeagnus angustifolia Linn. and Symphoricarpos albus, are introduced into the landscaping of Beijing. To expand their plantation, we investigated the mass propagation by cutting methods, and studied the effects of different concentrations of rooting powder on budding and rooting rate of their cuttings. The results show that certain concentrations of rooting powder could promote the budding rate of Caryopteris mongholica Bunge, Caryopteris×clandonensis. ‘Worcester Gold’ and Hippophae rhamnoides Linn., enhance the rooting rate of Hippophae rhamnoides Linn., Elaeagnus angustifolia Linn. and Symphoricarpos albus, and improve the number of roots of Caryopteris mongholica Bunge, Caryopteris×clandonensis. ‘Worcester Gold’, Hippophae rhamnoides Linn. and Symphoricarpos albus. The regenerated root length of cuttings of these 5 woody plants is significantly improved by rooting powder of medium to low concentrations. Furthermore, rooting powder treatments could also promote the survival rate of cuttings in pot in Elaeagnus angustifolia Linn.. In conclusion, the treatment with 0.15-0.5 g/L rooting powder could significantly increase the budding, rooting, root length or survival rate of cuttings of the 5 woody plants, thus facilitate the mass propagation of these woody plants by cuttings.

Key words: woody plants, cuttings, cutting segments, rooting powder, budding rate, rooting rate, survival rate

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