Comparative analysis of rooting ability of different Lycium resources under cutting propagation and hydroponic culture
[Objective]This study aims to investigate the rooting ability of different Lycium strains or varieties under cutting and hydroponic conditions to select Lycium materials that are easy to be propagated and promoted,providing scientific references for the efficient cultivation and large-scale breeding of Lycium in the future.[Method]Using 14 different Lycium strains or varieties,we conducted cutting and hydroponic experiments,measuring the rooting indicators including the average root diameter(mm),average root length(mm),average number of roots,rooting rate(%),and rooting effectiveness index,for evaluation and analysis.[Result]The correlation between the average root number and the average root length reached a significant level(P＜0.05),and the correlation between the number of rooting plants and the average root length,the rooting effect index and the average root number reached a very significant level(P＜0.01).The results of principal component analysis showed that the cumulative contribution rate of the three principal components was 94.674%,indicating that the three principal components contained most of the information of the measurement indexes.According to the comprehensive score of principal components,C1(311.82),C4(163.64)and C5(139.73)were the top three matril with the best rooting ability in cutting propagation.There was a significant correlation between the average root length and the average root diameter(P＜0.05),and a very significant correlation between the rooting effect index and the average root length(P＜0.01).The results of principal component analysis showed that the cumulative contribution rate of the three principal components reached 100%,indicating that the three principal components could cover 100%of the information of all indicators.According to the composite scores of principal components,C1(252.143),C4(218.376)and C3(175.501)had the stronger rooting ability in hydroponic culture.The cutting propagation and hydroponic culture rooting abilities of C1 and C4 Lycium materials were the strongest.[Conclusion]Analysis of the rooting ability under cutting and hydroponic conditions revealed significant differences in the rooting ability of different Lycium strains or varieties.Among them,the C1,C3,and C4 leaf-type Lycium showed strong rooting ability in both cutting and hydroponic cultivation methods,and the rooting ability of leaf-type Lycium was significantly stronger than that of fruit-type Lycium.
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