Affecting Factors of Cutting Propagation of Ruellia chartacea
Ruellia chartacea has high ornamental value and was introduced and cultivated in a few botanical gardens.It is acarpous during the introduction and cultivation periods.Factors affecting cutting propagation are the basis for improving breeding efficiency.An orthogonal test was conducted by four factors:substrate,cut part,plant growth regulator type,and concentration,with four levels of each factor.Through 16 experimental treatments,the data on five indexes,rooting rate,number of first-order roots,length of long-est first-order roots,fresh weight of roots,and fresh weight of new leaves were studied using range,variance,and multiple compari-sons.The results showed that the cutting substrate was the main factor affecting the length of the longest first-order root;the influ-ence of the cutting part on each index was very significant(p<0.01);the cutting part was the main factor affecting the rooting rate,the number of first-order roots,the fresh weight of roots and the fresh weight of new leaves;and the influence of the plant growth regulator type and concentration on the rooting rate and number of first-order roots was very significant(p<0.01).Based on the analysis,in the production practice,the middle and basal cutting parts are preferred as cuttings,and selecting perlite as the cutting substrate with the plant growth regulator ABT 300 mg·L-1 can achieve a good cutting effect.The results of this study can be used as guidance for large-scale cutting propagation of R.chartacea.
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NSTL
万方数据
维普
