Effect of MH and FA on the Change of Several Metabolites in Flue-cured Tobacco (Nicotiana tabacum L.) I. MH Absorption Ratio, Change of MH Residues and Alkaloid contents

MH 및 FA이 황색종 잎담배의 몇가지 대사산물 변화에 미치는 영향 I. MH 흡수율과 잔류량 및 Alkaloid함량의 변화

Using a flue - cured tobacco variety, KF lH9, recently bred and released to farming, effect of growth regulators(fatty alcohol and C - MH) on the change of alkaloid contents and dynamics of MH uptake and distribution were investigated. An efficient sucker control method was also pursued. Treatment of fatty alcohol at button stage remarkably increased the rate of C - MH uptake. However, except in the plants treated with 2- fold volume of C - MH, residue of C -MH was kept under maximum residue level(80 ppd). C - MH residue in stalk was higher than in foliage in general. Compared to untreated control, leaf weight per unit area was increased by the treatment even in lower leaves where vigorous transfer of C - MH from treated tips was indicated and sucker control higher than 94.9% was achieved with all treatments except for sole half volume C - MH treatment at topping stage. Alkaloid content in foliage was reduced by dual treatment of fatty alcohol and C - MH but increased in stalk and root.