Study on Softwood Cutting Propagation Technology of Tetraploid Robinia pseudoacacia
ZANG Zhenrong
KONG Yuguang
LIANG Yan
SUN Chao
ZHONG Weiguo
ZHANG Yuanshuai
DONG Yuanfu
ZHANG Lanying
YAN Liping
WANG Yinhua
Abstract：Using the excellent clone K4 of tetraploid Robinia pseudoacacia as the material,an orthogonal experimental design was adopted to study the effects of plant growth regulators IBA、NAA、ABT1(concentration,time)and cutting substrates on the softwood cutting of tetraploid Robinia pseudoacacia.The results showed that there were significant differences in the rooting rate,number of roots,average root length,and length of newly formed branches of tetraploid Robinia pseudoacacia cuttings under different treatments.Among the three plant growth regulators,ABT1 showed the best effect.The cuttings treated with ABT1 had better rooting rate,number of roots,average root length,and new branch length than the other two plant growth regulators.The effect of cutting substrate on the rooting rate,rooting number,and average root length of tetraploid Robinia pseudoacacia had reached a significant level.The comprehensive evaluation results of the membership function showed that the comprehensive evaluation value of treatment No.8(i.e.treatment with 200mg/L ABT1 for 2 hours,and the cutting substrate was a mixture of perlite:coconut coir:vermiculite in a volume ratio of 7:2:1)was the highest,with a rooting rate of 88.3％.It is suitable for the young branch cutting of tetraploid Robinia pseudoacacia and can be promoted and applied in production.
Keywords：tetraploid Robinia pseudoacaciasubstrategrowth regulatorsoftwood cutting
Publication Date：2024-10-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 71-75,112 )