Studies on <I>Kôro</I> (<I>Camellia sinensis var. sinensis f. macrophylla</I> (SIEB) KITAMURA) Tea Plant (Part 1):Inheritance of the Characters of the <I>Kôro</I> Type and Estimation of the Percentage of Natural Self Fertilization of the Tea Plant

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概要

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• <I>Kôro</I> (_??__??_ in Chinese) tea plant which named <I>Thea sinensis</I> L. var. <I>macrophylla</I> by P. F. SIEBOLD exsist in several places of Japan and were called <I>To tya</I>=Chinese tea or <I>Niga tya</I> =bitter tya.<BR>C. P. STUART refered the plant to one of the four varieties of the tea plant and KITAMURA named the plant <I>Camellia sinensis var. sinensis f. macrophylla</I> (SIEB.) KITAMURA.<BR>Author carried out the crossing and selfing tests using the Japanese so-called <I>Kôro</I> tea plant and other clones. As a result of above tests, it was cleared that the distinctive characters, that is, particularly large and undulating leaf etc. of this lant were controlled by a single recessive gene (k), and <I>Yabukita</I>, the famous variety for green tea in Japan was proved to be hetero plant fo the gene.<BR>The <I>Kôoro</I> type plant rose in the openpollinated progenies of the k hetero clones (<I>Yabukita</I>, U4 and S24) at 0.6-5.4%.<BR>Then, the natural self-fertilization of the tea clones was estimated at about 10% on an average condition.

• 日本茶業技術協会の論文

著者

• 鳥屋尾 忠之

  農林省茶業試験場

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