Establishment of a High-Efficiency Regeneration System for Petunia hybrida Hort. ex Vilm.-Andr. cv. ‘Midnight Gold’ from Leaf Tissues

Date Received: 08-02-2025

Date Published: 21-02-2025

Section:

NÔNG HỌC

How to Cite:

Trang, P., Dung, N., Dao, T., & Ha, P. (2025). Establishment of a High-Efficiency Regeneration System for Petunia hybrida Hort. ex Vilm.-Andr. cv. ‘Midnight Gold’ from Leaf Tissues . Vietnam Journal of Agricultural Sciences, 22(11). https://doi.org/10.1234/csv3yz47

Establishment of a High-Efficiency Regeneration System for Petunia hybrida Hort. ex Vilm.-Andr. cv. ‘Midnight Gold’ from Leaf Tissues

Pham Thi Huyen Trang , Nguyen Thi Phuong Dung , Tran Thi Dao , Phung Thi Thu Ha (*)

  • Tác giả liên hệ: phungthithuha@vnua.edu.vn
  • Keywords

    Activated charcoal, BA, NAA, Petunia hybrida Hort. ex Vilm.-Andr. cv. ‘Midnight Gold’, regeneration system

    Abstract


    Black double petunia (Petunia hybrida Hort. ex Vilm.-Andr. cv. ‘Midnight Gold’), belonging to the Solanacea family, is a high - value and popular potted ornamental plant on the flower market. This study aimed to establish an efficient in vitro regeneration system for Petunia hybrida “Midnight Gold”. A one-factor experiment was arranged in a completely randomized design with three replications. Leaf explants were cultured on Murashige and Skoog (MS) medium supplemented with various growth regulators and additives. The results showed that the optimal medium for shoot regeneration and multiplication was MS medium containing 1 mg/l benzyl adenine (BA) and 6.5 g/l agarose. For shoot development, MS medium with 30 g/l sucrose, 5% coconut water, and 6.5 g/l agarose was most effective for shoot tips, while 10% coconut water was preferred for nodal explants. Rooting was successfully induced on MS medium supplemented with 30 g/l sucrose, 0.1 g/l activated charcoal, and 6.5 g/l agarose. Acclimatized plantlets exhibited a 75% survival rate, reaching an average height of 7.83cm and producing 16.55 leaves per plant within four weeks. These findings provide a valuable protocol for Petunia hybrida “Midnight Gold” in vitro mass propagation, meeting the increasing market demand for this popular ornamental species.

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