摘要
以云烟87为材料，考察了植物生长调节剂GA3（赤霉酸：C19 H22O6）对烤烟上部叶生物碱含量及生物碱组成的影响。结果表明：①用1．5×10^5～3．5×10^-5浓度的GA，对烤烟上部叶进行喷施处理可较大幅度地降低上部烟叶总生物碱、烟碱、降烟碱、新烟草碱及假木贼碱的含量；②在0～3．5×10^-5的GA，浓度范围内，上部烟叶总生物碱、烟碱、降烟碱及新烟草碱的含量均与GA3呈极显著负相关（P〈0．01），假木贼碱的含量与GA3呈显著负相关（P〈0．05）；③在0～3．5×10^-5的范围内，上部烟叶烟碱含量占总生物碱含量的百分率随GA3浓度的增加而上升，而降烟碱含量、新烟草碱含量及微量生物碱总量占总生物碱的百分率均随GA3浓度的升高而下降，假木贼碱含量占总生物碱的百分率受GA3的影响不大；④在0～3．5×10 ^-3的范围内，烟碱含量及微量生物碱总量占总生物碱的百分率与GA3浓度间的相关程度均达极显著水平（P〈0．01），降烟碱及新烟草碱含量占总生物碱的百分率与GA3浓度间的相关程度均达显著水平（P〈0．05）。合适浓度的GA3叶面喷施可显著降低烤烟上部叶的刺激性，有利于提高烤烟上部叶的品质．
The effect of GA3 （Gibberellic Acid： C19H22O6 ） on the alkaloid content and composition in upper leaf was investigated with Yunyan 87 as experimental material, the results showed that ： 1 ） the contents of total alkaloid, nicotine, nornicotine, anatabine and anabasine significantly decreased by GA3 spraying at the concentration of 1.5 × 10^-5 - 3.5 × 10 ^-5 ; 2） the contents of total alkaloid, nicotine, nornicotine, anatabine and anabasine were significantly negatively correlated with GA3 concentration in the range of 0 to 3.5 × 10^-5, the confidence level for anabasine was P 〈0.05 and for the others was P 〈0.01 ; 3） with the increase of GA3 concentration in the range of 0 to 35 × 10^-5, the percentage of nicotine in total alkaloid increased, while thepercentages of nornicotine, anatabine and total microalkaloid decreased, and the percentage of anabasine changed little; 4） in the range of 0 to 3.5 × 10^-5, the confidence level of correlation between the percentage of nicotine or total microalkaloid in total alkaloid and GA3 concentration was P 〈0.01, and that of nornicotine or anatabine was P 〈 0.05. The irritancy of upper leaf of flue-cured tobacco could be significantly weakened by GA3 spraying at suitable concentration, and it was of benefit to the leaf quality.
出处
《烟草科技》
EI
CAS
北大核心
2008年第10期39-42,46,共5页
Tobacco Science & Technology
基金
湖南省烟草专卖局项目(02001)
常德卷烟厂项目(020308)
中国博士后科学基金资助
关键词
GA3
烤烟
上部叶
总生物碱
烟碱
降烟碱
新烟草碱
假木贼碱
GA3
Flue-cured tobacco
Upper leaf
Total alkaloid
Nicotine
Nornicotine
Anatabine
Anabasine
