柑橘 生産量 調査方法에 대한 考察

文斗吉,金漢鏞 濟州大學校 亞熱帶農業硏究所 1990 亞熱帶農業硏究 Vol.7 No.-

1. 濟州道 柑橘 生産量 調査에 있어서 樹齡別 層化는 推定値의 精度를 높이는데 기여하지 못하고 있다. 2. 濟州道 柑橘 生産量 調査에 있어서 目標精度를 相對標準誤差 0.01로 할 경우 標本의 크기는 1,000∼1,100으로 나타냈다. 3. 非標本 誤差를 줄일 수 있도록 實際 調査方法 및 集計方法을 詳述하였다. In order to find out the reasonable methods to estimate the yield of Citrus fruits produced in Cheju Island, data of the sample surveys conducted in Aug. 1990 and previous years were analyzed. Stratification by tree ages turned out to be meaningless for the increase in the accuracy of the estimate. Stratification by areas (12 administrative districts) and varieties (Super Early, Early and Common Satsuma mandarins, and other miscellaneous varieties) may be helpful for the efficient survey and the practical use of the results. Sample size for the relative standard error of 0.01 was calculated to be about 1,000∼1,100 groves. Possible sources of errors in surveys were discussed and methods to reduce the errors in various steps of survey were described.

柑橘 葉面積의 推定法

文斗吉 濟州大學校 1982 논문집 Vol.14 No.-

非破壞的인 方法으로 葉面積을 推定하기 위하여, 興津早生을 供試하여 葉表面積(A)과 葉長(L) 및 葉幅(W)과의 關係에 대한 여러가지 數學的 模型을 檢討하였다. 葉面積과 葉長 또는 葉幅의 對數 사이에 直線的인 關係가 있었지만 이들 對數의 重回歸 關係를 利用하는 것이 더욱 變異가 적었다. 그러나 實用的인面에서는 A=a+b(L×W) 또는 A=b(L×W)의 關係式(여기서 a, b는 常數)을 利用하는 것이 좋을 것으로 判斷되었다. 다른 다섯개의 溫州密柑 品種과 溫州密柑 以外의 8種 도는 品種에 대해서 上記式의 a. b 常數를 決定하였다. Several mathematical relationships between leaf surface area and linear dimensions were investigated in 'Okitsu' Satauma Mandarin, in order to select an effecient method of leaf area estimation. Unexplained variation was much less in multiple regression among logarithms of leaf area, length and width than simple regression between logarithms of leaf area and length of width. For the practical application, however, it was suggested that the equation of A=a+b(LxW) or A=b(LxW) where A, L, and W are area, length and width of leaves, and a and b are constants, would be satisfactory. The constants a and b were tabulated, for 13 other cv. of species of Citrus.

溫州蜜柑 夏·秋枝의 發生 및 生長에 미치는 c-MH의 效果

文斗吉,許英珍,韓海龍 濟州大學校 亞熱帶農業硏究所 1986 亞熱帶農業硏究 Vol.3 No.-

溫州蜜柑(Citrus unshiu)에 있어서 夏·秋枝 發生의 化學的 抑制 方法을 探索하는 一環으로 c-MH(maleic hydrazide의 choline鹽)의 利用可能性을 檢討한 結果를 要約하면 다음과 같다. 1. 橋本早生 幼木을 供試하여 6月 中旬부터 9月 初旬에 걸쳐 時期 및 濃度別로 1回 處理한 c-MH의 效果는; 1) 夏枝의 生長은 遲延되었으나 頂芽優勢現象이 없어져 新稍發生數는 오히려 增加되었으며 가지별 生長 특히 잎의 生長이 抑制되었고 심한 경우에는 쐐기 모양의 奇形葉이 出現되었다. 2) c-MH 處理에 依한 夏枝의 生長抑制 效果는 7月 處理區에서 그리고 250ppm 以上의 濃度에서 觀察되었다. 3) 秋枝發生은 1,000ppm 以上의 濃度 1回 處理로 充分히 抑制되었다. 2. 興津早生 結實樹에서 8月 下旬에 이미 發生된 夏枝를 除去한 後 2,000ppm을 1∼2回 處理한 結果; 1) 無處理區는 除去後 얼마 안있어 新梢가 많이 發生되었으나 處理區는 많은 눈이 形成되었지만 가지의 生長은 볼 수 없었다. 2) 處理 當年度 果實은 c-MH 處理에 의해 果汁의 糖度가 增加되었고 酸含量은 減少되는 傾向을 보였다. 3) 2回 處理區는 翌年의 春枝發生이 遲延되었을 뿐만 아니라 發育이 심히 抑制된 가지에서 쐐기모양의 奇形葉이 叢生하였다. 4) 그러나 顯微鏡으로 觀察한 잎의 橫斷面 細胞의 크기는 奇形葉과 正常葉 사이에 差異가 없었다. 5) 處理 다음 해에는 開花時期가 遲連되었고 着花數도 減少되었다. 6) 2回 處理區의 翌年度 果實은 發育이 抑制되었고 果梗部가 突出하였으며 果皮가 두껍고, 거칠은 奇形果의 發生이 많았다. 그러나 1回 處理區는 無處理區와 같았다. 3. 米澤溫州와 宮川早生의 結實樹를 供試하여 7月 下旬부터 10日 間隔으로 500PPM의 C-MH를 2∼3回 그리고 8月 下旬 1,000ppm 1回 處理로 夏·秋枝 發生을 充分히 抑制할 수 있었다. 果實의 發育과 果汁 成分에 미치는 c-MH의 效果는 試驗年度와 供試品種 에 따라 달랐다. The chemical control of summer and autumn shoots in Satsuma mandarin (Citrus unshiu) was examined using the foliar application of the choline salt of maleic hydrazide(c-MH). The results obtained are summarized as follows: 1. The effects of the concentrations and the dates of application were investigated in two-year old tress of 'Hashimoto Early'. 1) While the occurrence of summer shoot was delayed by c-MH, many buds were stimulated to grow afterwards. The growth of individual shoots, especially leaves, was conspicuously retarded. 2) The growth of summer shoot was affected by the application of 250ppm or higher in July. 3) The occurrence of autumn shoot was completely inhibited by an application of 1,000ppm or higher in late August. 2. Fruiting trees of 'Okitsu Early' were sprayed once or twice with 2,000ppm c-MH in late August after artificial removal of summer-shoots. 1) Regrowth of new buds in the current season was totally restricted by c-MH. 2) Juice Brix of the fruit in the current season seemed to be increased by c-MH, while acid content decreased. 3) Double sprays of 2,000ppm resulted in the delayed sprouting and the rosette-type shoots with underdeveloped wedge-shaped leaves in the following spring. 4) No differences in cell size were recognized under an optical microscope between the normal and the underdeveloped leaves. 5) Flowering was also delayed and the number of flowers was reduced by c-MH. 6) Abnormal fruits with protruded stem-end and thickened rough peel resulted from the double sprays of 2,000ppm in the end of the previous growing season, but not from the single spray. 3. It was demonstrated in fruiting trees of 'Miyagawa Early' and 'Yonesawa' Satsuma mandarin that the occurrence of summer flush could be inhibited by 2∼3 sprays of 500ppm c-MH during the period from late July to mid August and that of autumn flush by a spray of 1,000ppm in late August. The effects of c-MH on the fruit development and juice quality varied with years and orchards.

휘가론과 에스렐 葉面撒布가 溫州蜜柑의 落果 및 果實品質에 미치는 影響

文斗吉,高康豪,韓海龍 濟州大學校 亞熱帶農業硏究所 1993 亞熱帶農業硏究 Vol.10 No.-

장마기 이전에 약제를 살포할수 있는 화학적 적과방법을 확립하기 위하여 탱자에 접목한 宮川早生 溫州蜜柑 (Citrus unshiu. Marcovitch cv. 'Miyagawa')을 공시하여 휘가론(5-chloroindazol-8-acetic acid ethylester)과 에스렐(2-chloroethylphosphonic acid)의 적과효과를 '87∼'92년 6년간 시험한 결과를 요약하면 다음과 같다. 1. '87∼'90 4년간 시험에서 제 1차 생리낙과가 거의 끝나는 6월 15일전후 (과경 10∼16㎜인 시기)에 휘가론 50mg/l 살포로 최종착과수를 20∼30%정도 감소시키는 적과효과를 얻을수 있었다. 그러나 무처리구의 최종엽과비가 14이하로 착과과다인 경우는 휘가론 단독살포만으로는 목표엽과비에 접근하기 어려웠다. 2. 만개 후 20∼25일인 6월 13∼15일에 엽면살포한 휘가론 (50mg/l)과 에스렐 (5∼200mg/l)의 낙과촉진 효과는 相加的으로 작용하여 두 약제 혼용살포구에서 그리고 에스렐 농도가 높을수록 낙과가 많았다. 3. 50mg/l이상 농도의 에스렐은 낙엽율을 증가시켰는데 휘가론 혼용은 에스렐의 의한 낙엽증가를 경감시켰다. 4. 착과안정기의 엽과비는 '91년도는 대조구 14에 비해 에스렐 25mg/l 단독살포구 36, 휘가론 50mg/l 가용 에스렐 12.5mg/l 살포구에서 39가 되었으며 '92년도는 대조구 10.5에 비해 에스렐 10∼40mg/l 단독살포구에서 17∼18, 휘가론 50mg/l 가용 에스렐 5∼20mg/l 살포구에서 14∼24였다. 5. 만개 후 15일부터 1주 간격으로 5주간에 걸쳐 에스렐 20mg/l의 살포시기를 달리한 결과 모든 처리에서 살포 후 2주째에 낙과가 급증되었다. 최종낙과율은 비록 살포일 사이에 유의차는 인정되지 않았지만 살포시기가 가장 빨랐던 6월 8일 살포구와 가장 늦었던 7월 8일 살포구와 가장 늦었던 7월 6일 살포구에서 많았다. 6. 화학적 적과의 실증실험에서 '91년도는 대조구의 착과안정기 엽과비가 16.9였는데 비하여 휘가론 50mg/l 살포구는 21.6 휘가론 50mg/l+에스렐 50mg/l 혼용구는 196.5로서 에스렐 50mg/l 가용은 적과과다에 의한 착과과소 상태를 초래했다. '92년도 시험에서는 대조구의 엽과비가 12.2였는데 비하여 휘가론 50mg/l 과 에스렐 20mg/l 단용구 및 혼용구의 엽과비가 각각 15.2, 15.6, 21.3이였으며 휘가론 혼용은 에스렐에 의한 낙엽율 증가를 경감시켰다. 7. 적과정도에 따라 과실크기가 증가하였으며 특히 과육중의 증가가 인정되었으나 착과과소상태의 경우를 제외하고는 과즙의 감미비에는 별 영향이 없었다. 8. 만개 후 20∼25일이 되는 6월 10∼15일경과경이 10∼15mm인 시기에 휘가론 50mg/l의 단독살포 또는 착과정도에 따라 20mg/l 전후의 에스렐을 혼합 살포함으로써 적절한 적과효과를 얻을 수 있다고 생각되었다. In order to establish the chemical fruit-thinning method of applying thinning agents before rainy season, the effect of Figaron (5-chloroindazol-8-acetic acid ethylestel) and Ethrel (2-chloroethylphosphonic acid) was evaluated in 'Miyagawa' Satsuma mandarin (Citrus unshiu Marcovitch cv. Miyagawa) grafted on trifoliate orange stock during '87-'92. The results obtained are summarized as follows: 1. Foliar spray of Figaron (50mg/l) on about June 15 accelerated fruit-drop, resulting in the decrease in the number of fruits by 20-30%. In case of over-fruit load less then 15 of final leaf-fruit ratio in Control, however, it was calculated that the ideal leaf-fruit ratio could not be obtained by the application of Figaron alone. 2. When foliar-sprayed on June 13-15 (20-25 days after full bloom), Figaron (50mg/l) and Ethrel (5-200mg/l) additively accelerated fruit-drop, resulting in more fruit-drop by more concentrated Ethrel with Figaron. 3. Higher concentration of Ethrel more than 50mg/l increased leaf-drop ratio, and the effect was reduced by Figaron. 4. The numbers of leaves per fruit in '91 were 14, 36 and 39, respectively, in the plots of Control, 25mg/l Ethrel only, and 12.5mg/l Ethrel with 50mg/l Figaron. Those in '92 were 10.5, 17-18 and 14-24, respectively, in plots of Control, 10-40mg/l Ethrel only, and 5-20mg/l Ethrel with 50mg/l Figaron. 5. Foliar spray of 20mg/l Ethrel on 5 different days at one-week interval from 15 days after full-bloom resulted in the remarkable increase in fruit-drop ratio in the second week after spray. Though significant difference in the final fruit-drop ratio among the dates of spray was not statistically recognized, the highest was observed in the plots of June 8 and July 6. 6. In the practical test of chemical fruit-thinning in '91, the numbers of leaves per fruit after June drop were 16.9 and 21.6, respectively, in the plots of Control and 50mg/l Figaron, and that in the plot of 50mg/l Ethrel with 50mg/l Figaron was 196.5, resulting in too few fruits from excessive thinning effect. Those in '92 were 12.2, 15.2, 15.6, and 21.3, respectively, in the plots of Control, 50mg/l Figaron, 20mg/l Ethrel, and 20mg/l Ethrel with 50mg/l Figaron. Leaf drop caused by Ethrel was reduced by the addition of Figaron. 7. The size and weight of fruit, especially pulp weight, increased according to the degree of fruit-thinning, while the Brix/acid ratio in juice was not affected except in the case of too few fruits caused by excessive thinning. 8. It was suggested that practical fruit-thinning could be attained by the foliar spray of 50mg/l Figaron or the mixture of 50mg/l Figaron and 20mg/l or so(depending on the degree of fruit load) of Ethrel on June 10-15, or 20-25 days after full bloom.

키위(Actinidia chinensis)의 休眠枝揷에 關한 硏究

朴才昊,文斗吉 濟州大學校 亞熱帶農業硏究所 1990 亞熱帶農業硏究 Vol.7 No.-

키위 苗木을 短期間內에 大量으로 生産할수 있는 方法을 究明하기 위하여 'Hayward' 品種을 供試하여 休眠枝揷을 實施한 바 그 重要 結果는 다음과 같다. 1. 揷木床土의 加溫 (24℃와 28℃)은 揷穗의 發根 및 地下部 生育에 도움을 주지 못하였다. 2. 揷穗 基部의 Rooton 塗布는 揷穗의 發根 및 뿌리의 生育을 촉진하였다. 3. 揷木時期에 있어서 4月 上旬 보다는 3月 中旬에 揷木하였을 때가 發根率, 根의 生長 그리고 出芽率이 良好하였다. This study was conducted to establish the effective methods of dormant wood cutting of kiwifruit tree(Actinidia chinensis Planch. cv. 'Hayward'). Cuttings from one-year old shoots of six-year old tree were taken in mid Feb. and planted under mist in polyethylene film house. Results obtained are summarized as follows : 1. Heating of soil temperature (24℃ and 28℃) didn't improve rooting and shooting percentage of cuttings. 2. Treatment of the basal cut end with Rooton increased rooting percentage and accelerated root growth. 3. Based on the rooting percentage, number of roots per cutting and shooting percentage, the suitable time for dormant wood cutting was found to be mid March rather than early April.

開花前 低溫處理에 의한 복숭아, 배 및 사과 花器의 低溫障害

高光出,文斗吉 서울大學校 農科大學 1979 서울대농학연구지 Vol.4 No.2

Excised twigs with developing flower bud of peach (Daekubo), pear (Jangsiplang), and apple (Jonathan and Ralls) were treated by the different degrees and durations of low temperature on the different developing stages. Though discolouration of pistil or stamen was conspicuous low-temperature injury, many abnormal flowers with healthy pistil but under-developed short filament were observed in peach treated on the first bloom stage. Injury was caused, in most cases, by -3℃, and the degree of injury was increased by the increased duration of treatment and the progressiveness of bud development. Even when the injury was not immediately apparent, low temperature tended to delay flower development. Peach bud of first bloom stage and pear of white bloom were more sensitive to low temperature than apple of full pink.

早生溫州의 果皮內 主要 無機成分 組成面에서 본 日燒發生率 및 防止法에 關한 硏究

金承化,文斗吉 濟州大學校 亞熱帶農業硏究所 1985 亞熱帶農業硏究 Vol.2 No.-

탱자대목에 接木한 宮川早生 18年生을 供試하여 果皮內 成分을 中心으로 日燒症狀의 發生要因을 追跡 調査하고, 三保早生 18年生을 供試해서 無機成分 供給을 主로한 防止法 試驗을 實施하여 얻어진 結果를 要約하면 다음과 같다. 1. 果皮 두께가 얇을수록 그리고 果皮內 水分含量이 적을수록 日燒發生率이 높았다. 2. 果皮內 N와 Zn成分은 많을수록 日燒發生率이 높았고 K₂O와 Fe成分은 적을수록 發生이 많았으나 다른 成分은 有意差가 없었다. 3. 對照區의 日燒發生率이 12%인데 比하여 종이 봉지씌우기, Monmorin撒布 및 CaHPO₄+B 撒布區가 日燒發生率이 3%以下로 防止效果가 가장 좋았으며 CaCO₃撒布와 K?O施用區도 多少防止效果가 認定되었다. 4. 處理別 果皮內 無機成分의 集積은 Monmorin 및 CaHPO₄+B 處理區에서 N 成分이 낮고 K₂O, Fe成分이 높게 나타났으나 종이 봉지區에서 K₂O 및 Fe와 더불어 N成分도 높았다. 5. 果實品質에서는 Monmorin 및 CaHPO₄+B가 糖度가 無處理에 比해 0.3∼0.4% 높았고 종이 봉지에서는 糖이 적고 酸含量이 많았으며 着色도 지연되었다. 6. 無機成分의 葉面撒布 方法으로 日燒被害를 줄이고 果實의 品質도 向上시킬 수 있다고 結論되었다. Factors affecting the occurrence of sun scald on fruit peel were analyzed, especially in relatin to the inorganic composition of fruit peel, in Citrus unshiu Marc. cv. 'Miyagawa'. And in order to find out tge profitable method of the control of sun scald, the effects of several treatments including the application of various inorganic salts, were tested with Citrus unshiu Marc. cv. 'Miho'. The occurrence of sun scald and some fruit characters were observed. Results obtained are summarized as follows; 1. The thinner the peel thickness and the lower the moisture content in the fruit peel, the more the fruits damaged by sun scald. 2. The greater amounts of N and Zn in the fruit peel were correlated with the susceptibility to the sun scald, whereas those of K₂O and Fe with the tolerence. 3. The foliar applications of Monmorin, or of (CaHPO₄+B), and paper bagging satisfactorily decreased the occurrence of the fruit sun scald. The foliar spray of CaCO₃and the soil application of K₂O also suppressed the damage by sun scald, but those effects were not sufficient. 4. The foliar applications of Monmorin, or of (CaHPO₄+B) resulted in the hihger contents of K₂O and Fe, while the lower contents of N in the fruit peel. Paper bagging, however, increased the contents of N as well as K₂O and Fe. 5. Higher Brix of fruit juice was resulted from the application of Monmorin, or of (CaHPO₄+B), while lower brix, higher acid content of juice an delayed colour development were from paper bagging. 6. The foliar application of the proper inorganic salts was considered to be an efficien practice for the control of sun scald without any hazardous side effects on the fruit quality.

감귤의 樹體生長 및 開花結實에 미치는 B-995(n-Dimethyl Amino Succinamic Acid)의 效果

文斗吉,白子勳,張田益 제주대학교 1975 논문집 Vol.7 No.-

B-995 solutions, in concentrations of from 500 to 3,000㎎/ℓ in Aug. and Sept., and from 500 to 5,000㎎/ℓ in Oct. and Nov., were sprayed on four-year old Hayashiunshiu(a cultivar. of Satsuma mandarin) trees on trifoliate orange stocks. Neither the shoot length nor the internode length of summer-and autumn-cycle shoot was affected by B-995 treatments in Aug. and Sept. The number of flowers born on a tree in the following spring was not significantly influenced by and of the above treatments. Even when nine-year old bearing trees were sprayed with B-995 solutions in conc. of 0-3,000㎎/ℓ from Aug. to Oct., no significant changes were observed in the volume increasement, coloring, and juice Brix and acid content of their fruits. It was showed that Satsuma mandarin trees were very insensitive to the sprays of B-995, and it was concluded that B-995 could not be utilized for the purpose of regulating the tree growth, flowering, and fruit development of Satsuma mandarin.

바나나에 있어서 栽植樣式에 따른 年次間 收量 變化

金龍湖,吳現道,文斗吉 濟州大學校 亞熱帶農業硏究所 1988 亞熱帶農業硏究 Vol.5 No.-

바나나 栽植樣式이 年次間 收量에 미치는 影響을 究明하기 爲하여 濟州大學校 亞熱帶農業硏究所 하우스 內에서 ‘Dwarf Cavendish ’를 長方形(2.45 ×1.25m), 三角形(1.75 ×1.75m) 및 正方形(1.75 ×1.75m)으로 栽植하여 1985年 3月부터 1987年 2月에 걸쳐 plant crop과 ratoon crop에서의 收量形質을 分析한 結果를 要約하면 다음과 같다. 1. 出穗로부터 成熟까지의 所要日數는 ratoon crop에서 긴 편이었고 栽植樣式別로는 正方形, 三角形, 長方形 順이었으나 有意差는 없었다. 2. 果梗長은 ratoon crop에서 길었으나 果軸長은 반대로 plant crop에서 길었다. 3. 果房當 果指數와 果掌當 果指數는 年次間 및 栽植樣式間에 有意差가 없었으며 果指直徑은 ratoon crop에서 增加되었다. 4. 果房重은 ratoon crop에서 무거웠다. 5. 果房重에 미치는 栽植樣式의 影響은 ratoon crop에서 크게 나타났으며 長方形과 正方形에서 收量이 많았다. In order to elucidate the effect of planting arrangements on the yearly changes in yield characters, suckers of ‘Dwarf Cavendish ’ banana(Musa cavendishii Lamb.) were planted by the oblong(2.45 ×1.25m), triangular(1.75 ×1.75m), and square(1.75 ×1.75m) arrangements in March 1985, in the green house at The Research Institute for Subtropical Agriculture, Cheju National University, Cheju, Korea. Yield characters of two generations (plant and ratoon crops) were analyzed. The results obtained are summarized as follows; 1. More days from bunch head emergence to maturity were required in ratoon crop than in plant crop. No significant differences were recognized among planting arrangements. 2. While the fruit stalk was longer in ratoon crop than in plant crop, fruit bearing axis was longer in plant crop. 3. Number of fingers per hand or per bunch was not significantly different between generations and among planting arrangements. The diameter of finger in ratoon crop was wider than that in plant crop. 4. The weight of bunch in ratoon crop was heavier than that in plant crop. 5. The effect of planting arrangements on the bunch weight was remarkable in ratoon crop, and heavier bunch was obtained by the oblong and square arrangements.

바나나에 있어서 裁植苗의 種類가 生育과 收量에 미치는 影饗

金龍湖,朴才昊,文斗吉 濟州大學校 亞熱帶農業硏究所 1988 亞熱帶農業硏究 Vol.5 No.-

바나나의 莖頂培養에서 얻은 培養苗(草長 70㎝)와 吸芽苗(草長 120㎝와 170㎝)를 栽植하여 1987年 11月부터 1988年 11月에 걸쳐 濟州大學校 亞熱帶農業硏究所內 하우스에서 生育과 收量을 比較한 結果를 要約하면 다음과 같다. 1. 莖葉의 生長은 培養苗에서보다 吸芽苗에서 좋았고 吸芽苗 中에서는 170㎝ 苗에서 더 좋았다. 2. 出穗 및 成熟까지의 日數는 培養苗에 비해 吸芽苗에서 많았으나 有意差는 없었다. 3. 果房當 果指數와 果掌數는 培養苗에서 많은 편이었으나 果指長과 果指重은 반대의 경향이었으며 果房重은 栽植苗 間에 差異가 없었다. 4. 收量構成形質中 果房重과 正의 相關이 認定된 것은 果指長, 果指重, 果掌重 等이었는데 培養苗에서는 果指直徑도 高度의 相關이 있었다. 5. 段階別 多重回歸分析에서 收量에 가장 크게 영향을 미치는 形質은, 培養苗와 170㎝ 吸芽苗에서는 果掌重, 果房當 果掌數 順이었고 120㎝ 吸芽苗에서는 果指重, 果房當 果掌數 順이었다. This experiment was carried out to elucidate the effect of planting materials (shoot-tip cultured plantlet and sucker) on the growth and yield in banana (Musa cavendishii Lamb. cv. Dwarf Cavendish), from Nov. 1987 to Nov. 1988 in the plastic film house at the Research Institute for Subtropical Agriculture, Cheju National University, Cheju, Korea. 1. The growth of leaf and pseudostem was better in the sucker than that in the plantlet, and better in the larger sucker(170㎝) than that in the smaller one(120㎝). 2. Sucker tended to spend more days to bunch head emergence and maturity, but no statistically singificant difference was recognized. 3. While more fingers and hands per bunch were obtained in the plantlet, longer and heavier fingers were obtained in the sucker. Bunch weight was not different among planting materials. 4. The bunch weight was positively correlated with the length and weight of finger, and the weight of hand. In plantlet, the diameter of finger also highly positively correlated with the bunch weight. 5. In multiple stepwise regression analysis, variables most closely correlated with the yield turned out to be the weight and number of hands in the plantlet and the sucker of 170㎝, and the finger weight and the number of hands in the sucker of 120㎝.