【摘要】 通过河南确山和宝丰两地区烤烟蔗糖含量及其代谢关键酶的对比分析,研究了NC89不同发育时期18片叶蔗糖代谢相关酶即蔗糖磷酸合成酶(SPS)、蔗糖合成酶(SS)、转化酶(INV)的活性变化与蔗糖含量的变化。结果表明:烟叶蔗糖积累过程中,SPS、SS和INV活性的变化趋势是基本相同的,SPS、INV活性在烟叶生长中期宝丰烟叶均明显高于确山烟叶,蔗糖合成酶活性差别不显著,而确山烟叶蔗糖含量明显高于宝丰烟叶,说明了宝丰烟叶的碳代谢远远高于确山烟叶。更多还原

【Abstract】 The paper studied the relationships between the activity of sucrose metabolism key enzymes,namely sucrose phosphate synthase(SPS),sucrose synthase(SS) and invertase(INV),and the content of sucrose in eighteen leaves of flue-cured tobacco variety NC89 at different growth stages in the field in Queshan and Baofeng of Henan province.The results showed that the changeable trends of the activity of SPS,SS and INV were similar in the process of sucrose accumulation of tobacco leaf,the activity of SPS and INV in the metaphase of tobacco growth in Baofeng area was obviously higher than that in Queshan area,and the activity of SS was similar in two areas,but the sucrose content in tobacco leaves of Queshan was remarkably higher than that of Baofeng.All these results revealed that the carbohydrate metabolism level of tobacco leaves in Baofeng was significantly higher than that in Queshan.更多还原