Effects of exogenous hormone and medium on cutting propagation of golden Camellia -Camellia impressinervis

Do, Tran Van; Manh, Tran Duc; Duc, Dao Trung; Linh, Mai Thi; Thang, Nguyen Toan; Thuyet, Dang Van; Huyen, Ly Thi hanh; Tuấn, Nguyễn Văn; Dinh, Phung; Nguyen, T. B.; Viet, Thi Thu Phuong Ninh; Ha, Khuong Dang Thi Hai; Quy, Tran Cao Nguyen Tran Hoang; Lam, Pham Dinh Sam Vu Tien; Son, Nguyen Huu Thinh Hoang Thanh; Luong, Trinh Ngoc Bon Ho Trung; Trung, Tran Anh Hai Duong Quang; Van, Nguyen Quang Hung Tran Hong; Dang, Nguyen Hoai Anh Dinh Hai; Tuấn, Vũ Văn

doi:10.37855/jah.2020.v22i02.29

JAH

2020

DOI: 10.37855/jah.2020.v22i02.29

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Effects of exogenous hormone and medium on cutting propagation of golden Camellia -Camellia impressinervis

Tran Van Do¹,

Tran Duc Manh²,

Dao Trung Duc³

et al.

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CONSERVATION STATUS AND PROPAGATION OF Camellia dalatensis AND Camellia capitata BY CUTTINGS

Le Hong,

Do Van,

Nguyen Pham

et al. 2024

BIOTROPIA

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Article Highlights- Camellia dalatensis and Camellia capitata are critically endangered species.- Habitat loss and deforestation threaten the survival of these Camellia species.- Vegetative propagation aids conservation of critically endangered Camellia species.- Rooting success depends on cutting types, growth regulators, and substrate mix.- Research aids conservation efforts for Vietnam’s rare and vulnerable flora. AbstractCamellia dalatensis (V. D. Luong, Ninh & Hakoda) and Camellia capitata (Orel, Curry & Luu) are classified as critically endangered (CR) by the IUCN. Conservation solutions for these two species have not yet been fully implemented, while wild populations are declining. This research on vegetative propagation examined the efficacy of indole-3-butyric acid (IBA in solution or in powdered activated charcoal), cutting types (terminal shoot or stem cuttings), and substrates for the growth of cuttings (sand-coir dust mixes) on rooting efficiency. The highest rooting of C. dalatensis was observed in terminal shoot cuttings at 1,000 ppm IBA, and 25% sand and 75% coir dust substrate. Maximum values obtained were survival 95.6%, rooting percentage 88.9%, number of roots per cutting 6.9, root length 6.2 cm, and rooting index 42.9. For C. capitata, superior rooting was obtained with semi-hardwood cuttings, at 1,500 ppm IBA, and equal parts of sand and coir dust as substrate. Camellia capitata was more difficult to root, with maximum values of 65.6% survival, 52.2% rooting, 2.8 roots per cutting, 2.9 cm root length, and rooting index of 8.1. The results of this study can be used to support further propagation and conservation of these two endangered species.

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CONSERVATION STATUS AND PROPAGATION OF Camellia dalatensis AND Camellia capitata BY CUTTINGS

Le Hong,

Do Van,

Nguyen Pham

et al. 2024

BIOTROPIA

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Habitat Characteristics of Camellia quephongensis and Adaptation Mechanisms in Que Phong District, North-Central Vietnam

Tran,

Takahashi,

Nishikawa

et al. 2023

IJPB

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Camellia quephongensis Hakoda et Ninh is a yellow-flowered camellia that inhabits the Que Phong District, Nghe An Province, North-Central Vietnam, and its taxon includes approximately 50 species from South China and Vietnam. Researchers have primarily focused on the taxonomy and biochemistry of medicinal substances found in camellia flowers and on horticultural studies of their propagation. Consequently, habitat characteristics and adaptation mechanisms still need to be better understood. Thus, this study investigated the habitats of C. quephongensis in terms of landscape and stand composition, analyzed the morphological variabilities and age distribution patterns among different habitat types, and explored its adaptation mechanisms. The results revealed that this species preferentially inhabited forests on vulnerable slopes and stream banks, which were frequently disturbed by slope failure or flooding, while its multi-stemming traits were key factors in recovering from damage and persisting in such habitats. Relatively stable sites with fewer disturbances can be a source habitat, whereas frequently disturbed sites can be a sink habitat for the populations. Regular thinning of the shrub and herb layers in the plantation maintained a stand composition similar to that of natural stands; thus, succession control is recommended to conserve the naturally growing site of this species. The findings of this study will aid in the future conservation and restoration of growing areas.

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Effects of exogenous hormone and medium on cutting propagation of golden Camellia -Camellia impressinervis

Cited by 2 publications

References 0 publications

CONSERVATION STATUS AND PROPAGATION OF Camellia dalatensis AND Camellia capitata BY CUTTINGS

CONSERVATION STATUS AND PROPAGATION OF Camellia dalatensis AND Camellia capitata BY CUTTINGS

Habitat Characteristics of Camellia quephongensis and Adaptation Mechanisms in Que Phong District, North-Central Vietnam

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