Effects of Growth Regulators on the Tuberization of Perennial Weed, Cyperus serotinus Rottb.

생장조절제(生長調節劑)가 다년생잡초(多年生雜草) 너도방동사니(Cyperus serotinus Rottb.) 괴경형성(塊莖形成)에 미치는 영향(影響)

This study was conducted to determine the possible role of growth regulators and the effect of foliar part cutting on the tuber formation of C. serotinus. Foliar application of 6-benzylaminopurine (BA) increased tuber number and fresh weight of C. serotinus by an average of 24.7% and 32.4%, respectively, as compared with the untreated control. However, the tuberization of C. seratinus was inhibited by single treatment of abscisic acid (ABA) and gibberellic acid (GA) as the concentrations increased. As compared with the untreated control, BA at $10^{-4}$M and combination of BA $10^{-5}$ + GA $10^{-5}$M increased 31.8% and 53.7% of tuber number, respectively, but GA at $10^{-5}$M decreased tuber number by 21.9%. 15㎏/10a of nitrogen under three levels of BA resulted in the highest number of tuber formation of C. serotinus, an increase of 24.7% as compared with the untreated control. GA treated increased flowering of C. serotinus by an average of 4.8% based on the untreated control. Tuber number and fresh weight of C. serotinus was markedly inhibited as the number of cutting times increased. Three times cutting inhibited tuber number and fresh weight of C. serotinus by 76.1% and 96.6%, respectively, under nitrogen of 15kg per 10a as compared with the untreated control.

생장조절제(生長調節劑)가 너도방동사니의 생육(生育) 및 괴경형성(塊莖形成)에 미치는 영향(影響)과 경엽절단(莖葉切斷)의 효과(效果)를 구명하여 얻어진 결과(結果)는 다음과 같다. 1. BA의 경엽처리시(莖葉處理時) 너도방동사니의 괴경수(塊莖數)와 괴경(塊莖)의 생체중(生體重)은 무처리(無處理)에 비(比)해서 각각(各各), 평균(平均) 24,7%와 32.4%로 현저(顯著)히 증가(增加)했으나 ABA 및 GA를 단독(單獨) 처리(處理)한 경우(境遇), 대체(大體)로 억제(抑制)되는 경향(傾向)이었다. 2. BA $10^{-4}$M 처리(處理)와 BA $10^{-5}$M과 GA $10^{-5}$M의 혼합처리(混合處理)에서 괴경수(塊莖數)는 무처리(無處理)에 비(比)해 각각(各各), 31.8%와 53.7%로 증가(增加)했으나 GA $10^{-5}$M 처리(處理)에서는 21.9%의 감소(減少)를 보였다. 3. 질소수준별(窒素水準別) BA의 처리효과(處理效果)를 보면, 질소시용(窒素施用)이 15kg/10a 수준(水準)에서 괴경수(塊莖數)는 BA의 농도(濃度)를 평균(平均)하여 무처리(無處理)보다 24.7% 증가(增加)되었다. 4. 생장조절제(生長調節劑)가 너동방동사니의 개화(開花)에 미치는 영향(影響)을 보면, GA 처리구(無處理區)만이 무처리구(無處理區)보다 평균(平均) 4.8% 증가(增加)를 나타냈다. 5. 절단회수(切斷回數)의 증가(增加)는 너도방동사니의 괴경수(塊莖數) 및 괴경(塊莖)의 생체중(生體中)을 현저(顯著)히 감소(減少)시켰으며 3회(回) 절단(切斷)의 경우(境遇), 질소수준(窒素水準) 15kg/10a에서 괴경수(塊莖數)는 무처리(無處理)보다 76.1% 감소(減少)되었다.