Tuberous root production of Dahlia (dahlia x cultorum) by cuttage from apical meristem culture plants
2007
Naka, T.(Nara-ken. Agricultural Experiment Station, Kashihara (Japan)) | Maeda, S. | Sumikawa, Y.
We investigated Dahlia tuberous roots production by herbaceous cutting propagation from apical meristem culture stock. During the acclimation stage, initial growth was superior when we used commercial compost, mainly a peat-moss mixture, with added fertilizer including 240 mg/l nitrogen. The possibility was suggested that cuttings be continually cut from the remaining stock plants without budding under night break lighting for four or five hours. Furthermore, spray treatment of 1.6% daminozide solution at pinching of stock plants shortened the lower internode length of cuttings and increased sprouting points on tuberous roots. Tip cuttings with four nodes were superior in root number, leaf number, and tuberous root weight. Rooting was better on cell trays with 128 holes than on cell trays with 200 holes; cell seedlings for planting were available within three weeks.
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