A Newly Registered Tea Variety "Unkai"for Green Tea

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概要

• 論文の詳細を見る

• To improve tea varieties suitable for southwestern Japan, a tea breeding project has been carried out at the Tea Breeding Section, Tea Division, Miyazaki Agricultural Experiment Station. In April 1970, the station released the new variety "<I>Unkai</I>" suitable for <I>Kamairicha</I>, which was registered with M. A. F. as a superior variety.<BR>"<I>Unkai</I>" was selected from the F<SUB>1</SUB> hybrids between "<I>Takachiho</I>" and "F<SUB>1</SUB> 9-4-48" which was an F<SUB>1</SUB> hybrid of MA 23 (the Assam var.) × MC 3 (the Caucasia var.). This variety was tested for local adaptability at several experimental locations in southern Kyushu and Tokai districts as a clone No. A 15 before it was registered. The results of the tests showed that the variety was excellent in growth, yield, coldresistance, disease-resistance, marketing quality and table quality. Therefore, it was adopted as a recommended variety in Kumamoto and Miyazaki prefectures.<BR>The characteristics of this variety are as follows:<BR>1. This variety, like "<I>Yabukita</I>", is a few days earlier than "<I>Takachiho</I>" in plucking time. On the other hand, the sprouting time is a few days later than that of "<I>Takachiho</I>" and "<I>Yabukita</I>".<BR>2. This variety is an intermediate type with respect to shape of plant, and it shows vigorous growth and high yield from early stages to mature stages.<BR>3. This variety has higher resistance than that of "<I>Takachiho</I>" and "<I>Yabukita</I>" to net blister blight and anthracnose, and it also has high resistance to winter injury in natural and artificial conditions.<BR>4. The vegetative propagation of this variety is as easy as it is with " <I>Takachiho</I> " and " <I>Yabukita</I> " varieties using the usual cutting method.<BR>5. This variety has superior marketing and table qualties equal to those of "<I>Takachiho</I>".<BR>6. From the results of the experiments testing the local adaptability of " <I>Unkai</I>" variety in different environments, it is concluded that it is a suitable variety in south-western Japan.

• 日本茶業技術協会の論文

著者

• 平川 今夫

  宮崎県総合農業試験場茶業支場

• 徳永 保利

  宮崎県総合農業試験場茶業支場

• 間曽 竜一

  宮崎県総合農業試験場茶業支場

• 鮫島 斉

  宮崎県総合農業試験場茶業支場

• 米元 孝一

  宮崎県総合農業試験場茶業支場

• 向井 康

  宮崎県総合農業試験場茶業支場

• 長友 清

  宮崎県総合農業試験場茶業支場

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• A Newly Registered Tea Variety "Unkai"for Green Tea

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