Kyuikukan 4
| Denomination: | 'Kyuikukan 4' |
|---|---|
| Trade name: | Desana Compact Red |
| 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: | 2007-03-30 |
| Application Number: | 07-5830 |
| Grant of Rights Date: | 2010-09-23 |
| Certificate Number: | 3954 |
| Date rights surrendered: | 2024-09-23 |
Variety Description
Varieties used for comparison: 'Sweet Caroline Bronze' and 'Sweet Caroline Light Green'
Summary: The plants of 'Kyuikukan 4' are broader than those of 'Sweet Caroline Bronze' and 'Sweet Caroline Light Green'. The stems of 'Kyuikukan 4' are dark purple with very strong anthocyanin colouration while those of 'Sweet Caroline Bronze' are reddish purple with strong anthocyanin and those of 'Sweet Caroline Light Green' are light green with absent or very weak anthocyanin. 'Kyuikukan 4' has longer internodes than both reference varieties. The upper side of the fully developed leaf blade of 'Kyuikukan 4' is brown green (RHS 137B-C) while it is dark purplish brown (more purple than RHS 200C) blended with dark brown (RHS 199B) and undertones of brown green (RHS 146C) for 'Sweet Caroline Bronze' and light green (RHS 144B) for 'Sweet Caroline Light Green'. The lower side of the fully developed leaf blade of 'Kyuikukan 4' is brown green (RHS 148C) while for 'Sweet Caroline Bronze' it is violet to dark violet (RHS N77B-C) and for 'Sweet Caroline Light Green' it is light green (darker than RHS 144D). Anthocyanin colouration of the upper side of the midrib is weak to medium for 'Kyuikukan 4' while it is strong for 'Sweet Caroline Bronze' and absent for 'Sweet Caroline Light Green'.
Description:
PLANT: vegetatively propagated, annual, spreading/trailing growth habit, strong degree of branching
STEM: dark purple, very strong anthocyanin colouration, sparse pubescence, medium to thick, smooth
LEAF: alternate arrangement along stem, simple
LEAF BLADE: close to palmate shape, acuminate apex, ranging from cordate to truncate base, lobed, deep incisions between lobes, absent or very sparse pubescence on upper and lower sides, no variegation, upper side is brown green (RHS 137B-C) with greyed purple (more green than RHS N187A) margins changing to brown green (RHS 137B-C) at maturity, lower side is brown green (RHS 138B) with dark violet (RHS N77C) changing to brown green (RHS 148C) at maturity
MIDRIB: weak to medium anthocyanin colouration on upper and lower sides
PETIOLE: upper side has medium to strong dark brown (RHS N186C) anthocyanin colouration, lower side has medium intensity dark brown (close to RHS N186C) anthocyanin colouration
FLOWER: very sparse density
COROLLA: upper side is white (RHS NN155C) with violet (RHS N78A-B) in area of transition to corolla tube, lower side is white (RHS NN155C) with light blue violet (RHS 76A)
Origin & Breeding History: 'Kyuikukan 4' originated from an open pollination of a proprietary Ipomoea batabas designated 'KOP98211-2' conducted in September 2000 at the Miyakonojo Upland Farming Research Station National Agricultural Research 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 flowering habit, propagated by cuttings and planted in pots to be trialed in Miyakonojo-shi, Miyazaki, Japan and at the Omi R&D Center of Suntory Flowers Ltd. located in Higashiomi-shi, Shiga-ken, Japan during 2002. The botanical characteristics of this seedling were examined and compared to similar varieties 'Sweet Caroline Bronze' and 'Sweet Caroline Light Green'. It was concluded that this Ipomoea plant named 'Kyuikukan 4' is distinguishable from any other varieties, and uniform and stable in its characteristics.
Tests & Trials: The trial of 'Kyuikukan 4' 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. 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 4' with reference varieties 'Sweet Caroline Bronze' and 'Sweet Caroline Light Green'
Plant width (cm)
| 'Kyuikukan 4' | 'Sweet Caroline Bronze' | 'Sweet Caroline Light Green' | |
|---|---|---|---|
| mean | 77.0 | 48.3 | 47.4 |
| std. deviation | 8.76 | 4.06 | 5.01 |
Internode length (cm)
| 'Kyuikukan 4' | 'Sweet Caroline Bronze' | 'Sweet Caroline Light Green' | |
|---|---|---|---|
| mean | 5.1 | 3.1 | 1.5 |
| std. deviation | 0.63 | 0.61 | 0.19 |
Colour of fully developed leaf blade (RHS)
| 'Kyuikukan 4' | 'Sweet Caroline Bronze' | 'Sweet Caroline Light Green' | |
|---|---|---|---|
| upper side | 137B-C | more purple than 200C blended with N199B and underlying tones of 146C | 144B |
| lower side | 148C | N77B-C | darker than 144D |
Click on image for larger view
Sweet Potato: 'Kyuikukan 4' (left) with reference varieties 'Sweet Caroline Bronze' (centre) and 'Sweet Caroline Light Green' (right)
Click on image for larger view
Sweet Potato: 'Kyuikukan 4' (left) with reference varieties 'Sweet Caroline Bronze' (centre) and 'Sweet Caroline Light Green' (right)
Click on image for larger view
Sweet Potato: 'Kyuikukan 4' (left) with reference varieties 'Sweet Caroline Bronze' (centre) and 'Sweet Caroline Light Green' (right)
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