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

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 100 mg･L -1 α-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'.

Correlation between Cultivation Environment, Cropping System, and Quality Elements of Cut Flower and in Dendranthema grandiflorum ‘Jinba’

“…The growth of cut chrysanthemum is affected by the conditions of cuttings, which affects not only rooting but also the growth of cut chrysanthemum Jinba and Baekseon after cutting (Yoo and Roh, 2009;Roh and Yoo, 2010). When the length of Jinba cuttings was 9 cm; the number of leaves, 4~6; and diameter, 3.2 mm, the length and diameter of cut flowers were longer than other cut flowers.…”

Growth Characteristics of <italic>Hemerocallis thunbergii</italic> Baker Seedlings depending on Cell Size in Sowing using Plug Trays

“…1). Considering the finding that the more leaves, the better the above-ground part growth and rooting after planting plug seedlings (Yoo and Roh, 2009), LN is considered to be an important measure of the growth in raising plug seedlings using plug trays. The LN is the most distinct measure of growth that can be visually observed in the above-ground part.…”

Development of Raising Seedling Technology for Veronica pyrethrina Nakai Using Plug Trays

“…To make up for this deficiency, the porosity and size inside the substance are generally increased by mixing perlite. Lee et al (2020b) claimed that mountain spike speedwell did not show favorable growth in the mixed substrate of peat moss and perlite, but Yoo and Roh (2012) argued that roots of chrysanthemum 'Baekma' were long in the mixed substrate of peat moss and perlite (2:2, 3:1). Lee et al (2005) also reported that raising seedlings of Miscanthus sacchariflorus…”