【摘要】 不同品种、不同发育阶段的甜椒果实,采收后,在20℃下的呼吸、乙烯释放均表现下降趋势。外源乙烯处理不能诱导绿熟甜椒果实出现呼吸高峰,而只能对于过熟的全红果实的呼吸有暂时的促进作用,甜椒果实的呼吸表现属于非跃变类型。 甜椒果实ACC含量与EFE活性从幼嫩果到成熟的全红果实呈下降趋势,不表现跃变型番茄果实所具有的ACC含量和EFE活性峰形变化趋势。跃变类型果实与非跃变型果实的乙烯代谢有明显的区别。更多还原

【Abstract】 Climacteric rise of respiration,ethylene production and internal ethy-lene were not found at 3 different stages of sweet pepper ( Capascium annuum L, ) at 20 ℃. Different varieties planted in different regions of the northern part of China gave the same results. Ethylene treatment cannot induce the rises of respiration and ethylene production of sweet pepper fruit at mature-green stage, but a slight respiration rise was found at the late ripening stage of fruit after the ethylene treatment. From small and prematur stage to mature-green to turning red and to red stage of sweet pepper fruit, ACC content and EFE activity became lower and lower, no rise was seen as the ethylene production occured. Tomato fruit(climacteric type)gave the double rise of EFE activity and single rise of ACC content during the respiration rise. In ethylene biosynthesis, at least at stage of SAM-ACC and ACC-ethylene is different between the two respiration groups.更多还原