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http://dx.doi.org/10.7235/hort.2012.11071

Effects of Cutting Condition on Growth of Rooted Cuttings and Cut Flower in Plug Cutting of Dendranthema grandiflorum 'Baekma'  

Yoo, Yong-Kweon (Department of Horticultural Science, Mokpo National University)
Roh, Yong-Seung (Department of Horticultural Science, Mokpo National University)
Publication Information
Horticultural Science & Technology / v.30, no.1, 2012 , pp. 13-20 More about this Journal
Abstract
This study was carried out to examine the effect of cutting condition on the growth of rooted cuttings and their subsequent growth of cut flower in plug cutting of Dendranthema grandiflorum 'Baekma'. The more leaves were attached to the cutting, the higher shoot growth of rooted cutting was observed. Cutting with two to six leaves was effective in shoot growth and rooting than any other treatment. Shoot growth of rooted cutting was not affected by cutting length, but rooting was better in 5 to 7 cm long cutting. Shoot growth and rooting of rooted cutting was promoted by increasing the cutting diameter, and rooting was better in 3.6-4.2 mm thick cutting than 3.1 mm thick cutting. As the treating concentration of NAA increased, shoot growth was inhibited and root length shortened in rooted cutting. Soaking with $100mg{\cdot}L^{-1}$ ${\alpha}$-naphtalene acetic acid (NAA) for 1 h was effective in shoot growth and rooting. Root growth such as root number, root length, and root weight was better in rooting medium mixed with 2:2 of peatmoss:perlite than the other treatments. When rooted cutting produced from cutting with four or six leaves was planted, better length, weight, and leaf number of cut flower was observed. In rooted cutting produced with 7-9 cm long cutting, growth of cut flower such as length, weight, and ray flower number was more effective than the others. Therefore, it is recommended that the 7 cm long and 3.6 mm thick cutting with four to six leaves is used to improve their rooting and subsequent growth of cut flower in plug cutting of Dendranthema grandiflorum 'Baekma'.
Keywords
cutting diameter; cutting length; leaf number; NAA; rooting medium; standard chrysanthemum;
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