Propagation of Ornamental Plants
15(4): 136-141, 2015
LOCATION IN CANOPY OF THE STOCK PLANT AFFECTS ROOTING AND SUBSEQUENT GROWTH IN CUTTING PROPAGATION OF ROSES
Chul Hwan Hwnag1, Dal Jin Sim1, Ji Eun Park1, Yoo Gyeong Park2, and Byoung Ryong Jeong1,2,3*
1 Department of Horticulture, Division of Applied Life Science (BK21 Plus), Graduate School of Gyeongsang National University, 660-701 Jinju, Korea 2 Institute of Agriculture and Life Science, Gyeongsang National University, 660-701 Jinju, Korea 3 Research Institute of Life Science, Gyeongsang National University, 660-701 Jinju, Korea *Fax: + 82-55-757-7542, *E-mail: brjeong@gmail.com
This study was conducted to investigate rooting and subsequent growth as affected by location in the canopy of the stock plant for cutting propagation of cut roses (Rosa hybrida Hort.) ‘Pink Mimi’ and ‘Free Sun’. Cuttings were prepared as single node cuttings, each with a five-leaflet leaf and were stuck in rockwool cubes. Effect of location in the canopy of the flowering stem on cutting propagation revealed that rooting value was equal or higher than 78.4% in both cultivars regardless of location in the canopy of the flowering stem. In ‘Pink Mimi’, there were little differences in growth as affected by location in the canopy of the flowering stem. In ‘Free Sun’, length of the shoot and the longest root, and fresh and dry weights of the shoot increased, while chlorophyll content, and fresh and dry weights of the stem decreased, in the cuttings harvested from the central area of the canopy in comparison with those from the marginal area of the canopy. These results suggest that shoot growth of rooted cuttings was significantly affected by location in the canopy of the stock plant, and additional research is needed to reveal the effect of location in the canopy of the stock plant in more cultivars.
Key words: cut rose, light intensity, photosynthesis, physiological status of the stock plant, root formation
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