New Citrus Cultivar ‘Haruhi’

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  • カンキツ新品種‘はるひ’
  • カンキツ シン ヒンシュ'ハル ヒ'

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Abstract

<p>‘Haruhi’ is a new citrus cultivar that was released in 2011 by the Okitsu Citrus Research Station, National Institute of Fruit Tree Science (presently the Division of Citrus Research, Institute of Fruit Tree and Tea Science), National Agriculture and Research Organization, Japan. ‘Haruhi’ originated from a cross between Kankitsu Okitsu No.46[‘Sweet spring’ (Citrus unshiu Marcow. × C. hassaku hort. ex Tanaka) × ‘Trovita’ orange (C.sinensis Osbeck)] and ‘Awa orange’[hyuganatsu (C. tamurana hort. From 2001, when it was designated Kankitsu Okitsu No.55, it was included in the ninth citrus selection national trial, which conducted at 28 experimental station in Japan. The cultivar was ultimately selected and released as ‘Haruhi’ in 2009, and was registered as No. 20679 under the Plant Variety Protection and Seed Act of Japan on March 18, 2011. The rind is yellow-orange in color, about 3mm in thickness, with a moderately smooth surface. Peeling is moderately easy. The soluble solids content and acidity in the ripe fruit are about 13% and 1.0g/100mL, respectively. The average number of seeds per fruit is 14. The fruit of ‘Haruhi’ generally mature after late January in the Kyushu region and after late February in the Kanto and Tokai region of Japan. According to the Ministry of Agriculture, Forestry and Fisheries’ guidelines, it is desirable to cultivate ‘Haruhi’ in areas where the temperature does not fall below ‒3℃ in winter, to avoid cold injury to the fruit. Excessive fruiting results in a tendency toward smaller fruit and may weaken or wither the trees. ‘Haruhi’ has a medium degree of alternative bearing, and thus it is necessary to carry out proper fruit set management. Summary ex Tanaka) × ’Trovita’ orange]. This cross was made in 1991 at Okitsu Branch, Fruit Tree Research Station, Shizuoka, Japan. The tree has medium vigor, and a spreading shape. The average fruit weight is about 150g and the fruits are oblate in shape.</p>

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