Kyuikukan 5
| Denomination: | 'Kyuikukan 5' |
|---|---|
| Trade name: | Desana Bronze |
| Botanical Name: | Ipomoea batatas |
| Applicant/Holder: |
National Agriculture and Food Research Organization 3-1-1, Kannondai, Tsukuba-shi Ibaraki 305-8517 Japan Suntory Flowers Limited Administrative Division 4-17-5 Shiba, Minato-ku Tokyo 108-0014 Japan Tel: +81-3-5419-1382 |
| Breeder: |
Yasuhiro Takahata, Suntory Flowers Limited, Miyazaki, Japan Masaru Yoshinaga, Suntory Flowers Limited, Miyazaki, Japan Hiroki Nakayama, Suntory Flowers Limited, Miyazaki, Japan Masaru Tanaka, Suntory Flowers Limited, Miyazaki, Japan Yoshinori Nakazawa, Suntory Flowers Limited, Kumamoto, Japan Toru Kumagai, Suntory Flowers Limited, Ibaraki, Japan Yumi Kai, Suntory Flowers Limited, Miyazaki, Japan Kenji Katayama, Suntory Flowers Limited, Miyazaki, Japan Tetsufumi Sakai, Suntory Flowers Limited, Miyazaki, Japan Kazunari Iwaki, Suntory Flowers Limited, Shiga, Japan Yasuyuki Murakami, Suntory Flowers Limited, Shiga, Japan |
| Agent in Canada: |
BioFlora Inc. 38723 Fingal Line R.R. #1 St. Thomas, Ontario N5P 3S5 Canada Tel: 519-317-7511 |
| Application Date: | 2008-02-21 |
| Application Number: | 08-6183 |
| Grant of Rights Date: | 2010-09-23 |
| Certificate Number: | 3955 |
| Grant of Rights Termination Date: | 2028-09-23 |
Variety Description
Varieties used for comparison: 'Sweet Caroline Sweetheart Purple' and 'Sweet Caroline Sweetheart Red'
Summary: The plants of 'Kyuikukan 5' are narrower with an upright bushy growth habit while those of 'Sweet Caroline Sweetheart Purple' have an upright bushy to spreading/trailing growth habit. The stems of 'Kyuikukan 5' have denser pubescence and longer internodes than those of the reference varieties. 'Kyuikukan 5' has thicker stems and broader leaf blades than the reference varieties. The upper side of the fully developed leaf blade of 'Kyuikukan 5' is greyed purple black (RHS N186A) while it is dark brown (more red than RHS 200B-C) for 'Sweet Caroline Sweetheart Red'. The lower side of the fully developed leaf blade of 'Kyuikukan 5' is brown purple (RHS N77A) whereas for 'Sweet Caroline Sweetheart Red' it is dark violet (RHS N79B). Anthocyanin colouration of the upper side of the petiole is strong dark purple red (RHS 187B) for 'Kyuikukan 5' while it is medium blue pink (RHS 186C) for 'Sweet Caroline Sweetheart Red'.
Description:
PLANT: vegetatively propagated, annual, upright bushy growth habit
STEM: dark purple, very strong anthocyanin colouration, moderate pubescence, medium to thick, smooth
LEAF: alternate arrangement along stem, simple
LEAF BLADE: cordate shape, acuminate apex with rounded tip, cordate base, entire margin, sparse pubescence on upper side, absent or very sparse pubescence on lower side, no variegation, upper side is brown green (RHS 146A) with purple tones changing to greyed purple black (RHS N186A) at maturity, lower side is brown green (RHS 146B) changing to brown purple (RHS N77A) at maturity
PETIOLE: upper and lower sides have strong dark purple red (RHS 187B) anthocyanin colouration
Origin & Breeding History: 'Kyuikukan 5' originated from a cross between the female parent designated 'KOP99205-1' and the male parent made up of a mix of pollen from proprietary selections of Ipomoea batatas identified as '99US-OR', 'KOP99210-1', 'Kyuikukan 1 gou', 'KOP99211-3', 'KOP99211-4' and 'KOP97286-5'. The cross was conducted in June 2001 at the Miyakonojo Upland Farming Research Station National Agricultural Reseach Center for Kyushu Okinawa Region in Miyakonojo-shi, Miyazaki, Japan. The resultant seedlings were grown in pots in a glasshouse and evaluated. One seedling was selected based on its leaf colour and growth habit, propagated by cutting and planted in pots to be trialed in Miyakonojo-shi in Miyazaki, Japan and at the Omi R&D Center of Suntory Flowers Ltd. located in Higashiomi-shi, Shiga-ken, Japan from 2002 to September 2007. The botanical characteristics of this seedling were examined and compared to similar varieties 'Sweet Caroline Purple' and 'Sweet Caroline Bronze'. It was concluded that this Ipomoea plant named 'Kyuikukan 5' is distinguishable from any other varieties, and uniform and stable in its characteristics.
Tests & Trials: The trial of 'Kyuikukan 5' was conducted in a polyhouse during the summer of 2009 at BioFlora Inc. in St. Thomas, Ontario. It included 15 plants of each variety. All plants were grown from rooted cuttings transplanted into 15 cm pots on June 30, 2009. Most observations and measurements were taken from 10 plants or parts of plants of each variety on August 6, 2009. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.
Comparison tables for 'Kyuikukan 5' with reference varieties 'Sweet Caroline Sweetheart Purple' and 'Sweet Caroline Sweetheart Red'
Plant width (cm)
| 'Kyuikukan 5' | 'Sweet Caroline Sweetheart Purple' | 'Sweet Caroline Sweetheart Red' | |
|---|---|---|---|
| mean | 52.5 | 78.1 | 50.9 |
| std. deviation | 4.37 | 4.65 | 9.52 |
Internode length (cm)
| 'Kyuikukan 5' | 'Sweet Caroline Sweetheart Purple' | 'Sweet Caroline Sweetheart Red' | |
|---|---|---|---|
| mean | 2.9 | 1.9 | 1.6 |
| std. deviation | 0.24 | 0.18 | 0.23 |
Leaf blade width (cm)
| 'Kyuikukan 5' | 'Sweet Caroline Sweetheart Purple' | 'Sweet Caroline Sweetheart Red' | |
|---|---|---|---|
| mean | 12.0 | 8.6 | 10.3 |
| std. deviation | 0.49 | 0.36 | 0.73 |
Colour of fully developed leaf blade (RHS)
| 'Kyuikukan 5' | 'Sweet Caroline Sweetheart Purple' | 'Sweet Caroline Sweetheart Red' | |
|---|---|---|---|
| upper side | N186A | N186A | more red than 200B-C |
| lower side | N77A | N77A | lighter than N79B |
| upper and lower sides of petiole | 187B | 187B | 186C |
Click on image for larger view
Sweet Potato: 'Kyuikukan 5' (left) with reference varieties 'Sweet Caroline Sweetheart Purple' (centre) and 'Sweet Caroline Sweetheart Red' (right)
Click on image for larger view
Sweet Potato: 'Kyuikukan 5' (left) with reference varieties 'Sweet Caroline Sweetheart Purple' (centre) and 'Sweet Caroline Sweetheart Red' (right)
Click on image for larger view
Sweet Potato: 'Kyuikukan 5' (left) with reference varieties 'Sweet Caroline Sweetheart Purple' (centre) and 'Sweet Caroline Sweetheart Red' (right)
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