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Effect of the Pot Type on the Growth of Rose Plantlet and Production of Cut Flowers after Transplanting
Single-node rose cuttings propagated in November were transplanted into four types pot, for 4 months. Plantlets cultured in pot which bottom center with a hole(typeⅠ) has more leaves than the others. But pot type did not influence plant height, shoot dry weight, and ratio of shoot dry weight/fresh weight. However, cuttings were propagated in April and cultured in different pot types, for 8 months, plantlets cultured in pots of typeⅡ, which bottom edge with fore holes, were higher than others. Shoot dry weight of 'Samantha' cultured in typeⅠwas the heaviest, and in pot typeⅢ, which bottom edge with two arc holes, was the lightest, but the different was not occurred on 'Princess Caroline'. Moreover, pot type did not influence number of plant leaves and ratio of shoot dry weight/fresh weight. No matter with cultured period, root tips, root dry weight, and ratio of root dry weight to fresh weight were no significantly different among plantlets cultured different pots. Plantlets cultured in pot of typeⅠhad the longest root and the heaviest dry weight of root longer than 4.5 cm. Plantlets cultured in pot of typeⅢ had the shortest root and lightest dry weight of roots longer than 4.5 cm. Furthermore, roots of the former plantlets circled at the pot bottom, and the roots of later did not circle, which was the result of air pruning. After transplanting for cut flower production, there no different on the quantity and quality of rose cut flowers produced from different plantlets cultured in various pots.
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