Kyuikukan 4

Active

Ipomoea batatas (L.) Lam. Sweet potato · Vegetables · bred by Yasuhiro Takahata^^^Masaru Tanaka^^^Hiroki Nakayama^^^Tetsufumi Sakai^^^MASARU YOSHINAGA^^^Yoshinori Nakazawa^^^Toru Kumagai^^^Yumi Kai^^^Kenji Katayama^^^Yasuyuki Murakami^^^Kazunari Iwaki

also searched as: кюикукан 4

Variety description

10 August 2026

The variety has a compact growth type with short internodes, making it suitable for cultivation in containers, hanging baskets, and window boxes. The main ornamental features are green-brown leaves on both sides and dark purple stems with intense anthocyanin pigmentation.

The plant belongs to ornamental forms and is valued exclusively for the appearance of its foliage. Tuber formation in this variety is poorly expressed or absent, so it is not intended for use as an agricultural crop for harvest.

Sources5

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Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Breeder: Yasuhiro Takahata^^^Masaru Tanaka^^^Hiroki Nakayama^^^Tetsufumi Sakai^^^MASARU YOSHINAGA^^^Yoshinori Nakazawa^^^Toru Kumagai^^^Yumi Kai^^^Kenji Katayama^^^Yasuyuki Murakami^^^Kazunari Iwaki 1 Developed the variety
Applicant: Takahata Yasuhiro|Miyakonojo, JP / Yoshinaga Masaru|Miyakonojo, JP / Nakayama Hiroki|Miyakonojo, JP / Tanaka Masaru|Miyakonojo, JP / Nakazawa Yoshinori|Kumamoto, JP / Kumagai Toru|Tsukuba, JP / Kai Yumi|Miyakonojo, JP / Katayama Kenji|Miyakonojo, JP / Sak Submitted the application to the register
Rights holder: Taizo Chinju 70 Holds the rights to the variety

Plant breeders' rights

The right is granted for a limited term: propagation of the variety requires a license from the rights holder.

Japan № 20622

Active

Application filed 23 January 2007
Registered 12 February 2010
Currently active indefinite in the register

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Records are sourced from official registry publications. Data sources and legal status

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