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VOL. 7, ISSUE 6 (2025)
Effects of cutting size and growth regulator concentration on the propagation of eight-sided deep pink camellia (camellia japonica l.) Cuttings
Authors
Nguyen Thi Tinh, Nguyen Huu Tho, Luu Hong Son, Duong Manh Cuong, Pham Thi Vinh
Abstract
The study aimed to evaluate the effects of cutting size and NAA concentration on the survival, growth, and root formation of Eight-Sided Deep Pink Camellia (Camellia japonica L.) under cutting propagation conditions. The experiment was carried out using a two-factorial design (3 × 4), with three cutting sizes (15-20 mm, 25-30 mm, 35-40 mm) and four NAA concentrations (0, 100, 200, 500 ppm). The cuttings were monitored over 120 days, and the survival rate, shoot sprouting rate, rooting percentage, root number, and root length of the cuttings were evaluated at regular intervals. The results indicated that both cutting size and NAA concentrations significantly affected rooting ability. Medium-sized cuttings (25-30 mm) showed the highest performance for most growth parameters. NAA at 200-500 ppm significantly improved survival rate, sprouting rate, and root formation in all cutting size groups. The optimal NAA concentration depended on cutting lignification, with 200 ppm being most suitable for small cuttings, whereas 500 ppm was more effective for medium and large cuttings. The combination of 25-30 mm cuttings and 200 ppm NAA produced the highest number of roots and the greatest root length among all treatments. These findings provide a scientific basis for developing a cutting propagation method for Eight-Sided Deep Pink Camellia, supporting conservation programs and the scaling up of plant propagation.
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Pages:31-37
How to cite this article:
Nguyen Thi Tinh, Nguyen Huu Tho, Luu Hong Son, Duong Manh Cuong, Pham Thi Vinh "Effects of cutting size and growth regulator concentration on the propagation of eight-sided deep pink camellia (<i>camellia japonica l.</i>) Cuttings". International Journal of Agriculture and Plant Science, Vol 7, Issue 6, 2025, Pages 31-37
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