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고위도 지역에서 내한성 차나무 육성을 위한 국내외 수집종의 생육 및 특성분석
허남기(Nam-Kee Heo),이광재(Kwang-Jae Lee),김희연(Hee-yeon Kim),임상현(Sang-hyen Leem),함헌주(Heon-Joo Ham),김경희(Kyeng-Hee Kim),이철훈(Cheol-Hun Lee),한상섭(Sang-seob Han) 한국차학회 2010 한국차학회지 Vol.16 No.2
This study investigated the genetic characteristics of tea tree lines collected both in Korea and abroad via a functional analysis of growing features such as cold hardiness. The purpose of this study was to determine the conditions required for the stable cultivation of tea trees in Goseong at high altitudes and under climatic conditions less favorable than those in southern regions. In accordance with the analysis, 8 lines including GS 1 showed stronger cold hardiness than Yabukida, the standard variety, and the harvest period was faster by 1 to 4 days compared to Yabukida. The number of leaves per stock was 102 to 155 in 6 lines. In accordance with the analysis on indoor freezing (EC), 16 lines had high resistance to freezing with LT50 (winter killing temperature) from -10.15 to -12.42oC. The total catechin content was 4.79 to 7.16%, similar to or lower than that of Yabukida. However, GS 8 and GS 15 had higher GCg and ECg values, respectively. The GS 7 and GS 18 lines had lower caffeine content, whereas the tannin content was lower in the G21 line. RAPD classified the varieties into 3 groups based on 75% similarity. It was found that 3 lines, GS 15, GS 19 and GS 21, were genetically very similar. It was estimated that 5 lines, GS 15, 16, 19, 21 and GS 22, which were selected according to strong cold hardiness, can be grown as promising lines at high altitudes.
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