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Volume 2003, Issue 95
Displaying 1-6 of 6 articles from this issue
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Tsutomu Oyaizu, Yukikazu Kuranuki, Yoriyuki Nakamura, Tamotsu Hidaka, ...2003 Volume 2003 Issue 95 Pages 1-15
Published: June 30, 2003
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSA new tea cultivar named 'Tsuyuhikari' for green tea was developed from seedlings derived from the cross of 'Shizu7132'×'Asatsuyu'at the Shizuoka Tea Experiment Station in 1970. The clone was selected by individual selection in 1979. It was evaluated for local adaptability and for a specific characteristics from 1991 to 1997. It was named 'Tsuyuhikari' and adopted as a recommended cultivar of Shizuoka prefecture in 2001.
'Tsuyuhikari' is slightly early budding cultivar. The shape of the plant is medium type and the growth habit is fairly vigorous. The flush shoots show bud weight type and flush leaves are elliptic in shape and light green in color. The cutting of 'Tsuyuhikari' is inferior to 'Yabukita' in rooting, but show good growth after rooting. 'Tsuyuhikari' is more resistant to cold damage in winter than that of 'Yabukita'. It is fairly resistant to tea anthracnose(Colletotrichum theae-sinensis(Miyake)Yamamoto). The yield of green leaves is higher than that of 'Yabukita'. 'Tsuyuhikari' has high quality in the processed tea. It has a little deposits in liquor, but the color of liquor is bright green. The aroma is refreshing, and the taste is mild. 'Tsuyuhikari' adapts itself to any tea cultivated region in Shizuoka prefecture.View full abstractDownload PDF (1172K) -
Kunio Okano, Kiyoshi Matsuo, Sadaaki Kondo2003 Volume 2003 Issue 95 Pages 16-23
Published: June 30, 2003
Released on J-STAGE: December 03, 2009
JOURNAL FREE ACCESSComposition of amino acids in xylem sap of genus Camellia was investigated in order to clarify the physiological significance of theanine accumulated in tea leaves. Xylem sap was collected from intact stems by vacuum suction, and amino acids composition was analyzed by HPLC. Major amino acids founded in section Thea were glutamine, theanine and arginine, while those recognized in sections Camellia, Heterogenea and Paracamellia were glutamine and arginine. Considerable amount of theanine could be detected only in section Thea. Based on the comparison of amino acids composition between xylem sap and new shoots, it was assumed that glutamine in xylem sap would act as a precuesor for further metabolism, while theanine and arginine would play a role of nitrogen translocation, storage and/or ammonium detoxification.View full abstractDownload PDF (518K) -
Takashi Mizuta2003 Volume 2003 Issue 95 Pages 24-28
Published: June 30, 2003
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSI devised a method to investigate the population intensity per leaf of eriophyid mites (Acaphylla theavagrans and Calacarus carinatus) by tea leaf dipping. A tea leaf infested with mites was dipped into 70% ethanol (100ml), After shaking a bottle into the leaf and ethanol, a 10-m1 aliquot was filtered on paper (Advantec, No.2). Thereafter, the numbers of mites on the filter paper were counted for each species. The number of mites on the filter paper was proportional to the number of mites on the leaf regardless of the species of mites. This method is suitable for monitoring the population intensity per leaf of eriophyid mites on tea plants.View full abstractDownload PDF (279K) -
[in Japanese], [in Japanese]2003 Volume 2003 Issue 95 Pages 29-53
Published: June 30, 2003
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSDownload PDF (905K) -
Shoichi Goto2003 Volume 2003 Issue 95 Pages 54-64
Published: June 30, 2003
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSDownload PDF (673K) -
Masakazu Shiwa2003 Volume 2003 Issue 95 Pages 65-75
Published: June 30, 2003
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSDownload PDF (655K)
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