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光中斷 處里가 促成 딸기의 生育 및 體內 成分含量에 미치는 影響
金龍贊,朴庸奉,金榮龍 濟州大學校 亞熱帶農業硏究所 1993 亞熱帶農業硏究 Vol.10 No.-
本 硏究는 最近 딸기의 需要가 계절에 관계없이 계속됨에 따라 光周性을 利用한 각각 다른 光中斷 處理를 施行함으로서 生育狀態 및 體內 成分含量을 比較하고 周年 栽培의 可能性을 타진함과 아울러 醫學的 으로 證明되어있으며 近來에 관심의 대상이 되고 있는 抗癌物質인 ellagic acid를 定量分析하여 딸기를 健康食品으로 認識 定着시킴은 물론 栽培農家의 收入增大에 기여함을 目的으로 遂行하였는데 그 結果를 要約하면 다음과 같다. 1. 葉柄長, 葉數 等의 生育 狀態에서 光中斷處理區가 對照區보다 良好하였으며 處理時間이 길어질수록 높아지는 傾向을 보였다. 2. 收?? 開始期는 光中斷 處理區가 對照區보다 빨랐고, 時間이 길수록 效果는 上昇하였다. 3. 株當 果數는 女峰의 3時間 光中斷區에서 가장 많았으며 두 品種 공히 2時間과 3時間 光中斷 處理間에는 차이가 없었고 平均果實 무게에도 有意性은 인정되지 않았다. 4. 糖度와 酸度를 比較하면 初冬에 比하여 女峰의 糖과 酸 含量이 높았으며 두 品種 공히 處理時間이 길수록 糖ㆍ酸含量이 增加하였으나 初冬은 處理間에 糖度의 차이가 없었다. 5. Soluble sugar 含量은 還元糖인 果糖과 葡萄糖이 많았으며 非還元糖인 蔗糖은 적었고 處理時間이 길어질수록 增加하였다. 6. Organic acid 含量은 品種, 處理間에 관계없이 citric acid含量이 비교적 많았으며 fumaric acid, tartaric acid順이었다. 7. Ascorbic acid 含量은 女峰의 3時間處理區에서 가장 많았으며 初冬인 경우는 對照區에서 가장 적은 數値를 보였다. 8. 抗癌物質 Ellagic acid含量은 과실에 比하여 잎이 約 4배가 많았으며 分離形이 結合形에 比하여 約 2배가 높았고 處理間에는 初冬인 경우는 差異가 있었으나 女峰에서는 유의성이 없었다. This study was conducted by various lihgt break treatments using physiological characteristics, photoperiodism, to know possibility of year round culture of strawberry, the status of growth and development, comparison of component in vivo because demand of strawberry fruit is getting increase all the year round. In addition, as acting quantitative analysis of ellagic acid which is getting a target of concern recently and verifying medically, it was to fix recognition "strawberry fruit as a healthy food" and to contribute increase of income in farm house. Results were summerized as follows: 1. In the growth status of petiole length, leaf number, light break plots were bigger than that of control and showed getting bigger as time goes by. 2. In the harvest time, light break plots were earlier than that of control and the more the time of light break was the earlier the effect was. 3. Fruit numbers a plant were the most in light break plot for three hours of cv. Yeobong. But, there were't significant between 2 and 3 hour light break plot. There was also same trend in mean fruit weight. 4. Sugar and acid contents of cv. Yebong were higher than those of cv. Chodong and in both of two cultivars the more the time of light break was the higher the sugar and acid contents were. But ˚Brix wasn't significant in cv. Chodong. 5. Fructose and glucose contents were high but sucrose was a little and as time goes by titratable sugar contents were more and more increase in both of two cultivars. 6. Citric acid contents was the highest and in order of fumaric acid, tartaric acid 7. Ascorbic acid contents was the highest in 3 hour light break plot of cv. Yeobong and was the least in control plot of cv. chodong. 8. Ellagic acid contents in leaf was 4 time as much as that of fruit and that of free form was 2 time as much as that of conjugation form. As increase the elapsed time, ellagic acid contents was more increase remarkably in cv. Chodong but weren't significant among treatments except control in cv. Yeobong.