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Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (34): 69-75.doi: 10.11924/j.issn.1000-6850.casb16110043

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Cutting Propagation Techniques for Betula microphylla var. paludosa

  

  • Received:2016-11-09 Revised:2017-11-27 Accepted:2017-01-24 Online:2017-12-07 Published:2017-12-07

Abstract: Taking the perennial Betula microphylla var. paludosa as test materials, the effects of different hormone types, concentrations, soak time and lignified degrees on hardwood and softwood cuttings of rooting rate, rooting length and rooting number were investigated, to find a good method to improve the rooting rate. The results showed that the rooting rate of soft cuttings was higher than that of hardwood cuttings; the highest rooting rate of hardwood cuttings reached 13.33% which was treated with mixed hormones ABT-1 and GGR of 200 mg/L for 10 h; soft cuttings was treated with ABT-1 of 50 mg/L for 20 min, the rooting rate reached 60%; the highest rooting length and rooting number of hardwood cuttings were 3.75 cm and 6.51; and those of softwood cuttings reached 32.38 cm and 14.06. The rooting rate of perennial Betula microphylla var. paludosa was improved with different treatments.