作　　者： ; ; ; ;

机构地区： 华南农业大学园艺学院广东省广州市果蔬保鲜重点实验室

出　　处： 《园艺学报》 2006年第5期1087-1089,共3页

摘　　要： 研究了正常成熟、成熟抑制和促进成熟处理的香蕉果实蔗糖磷酸合成酶(SPS)与呼吸速率、硬度及蔗糖形成的关系。结果表明:(1)使用乙烯吸收剂不仅极显著抑制了呼吸速率、果实软化和蔗糖的积累(P<0·01),同时抑制了SPS的活性,与正常成熟果实相比,其SPS活性高峰延迟3d出现,酶活性明显降低。(2)丙烯处理不仅使SPS活性高峰比对照提前9d出现,而且促进了呼吸速率的提高,加速了硬度的下降和蔗糖的积累。表明SPS与香蕉果实的成熟、衰老和糖的积累及果实软化等有密切的关系。 The relationships between the activity of sucrose phosphate synthase （SPS） and respiration rate, softening and sucrose accumulation during banana ripening were studied. It was shown that the application of ethylene absorbent not only inhibited the rate of respiration, delayed the fruit softening and the accumulation of sucrose （P 〈 0. 01 ）, but also inhibited the activity of SPS, the peak of which appearing 3 days later, and the activity of SPS being decreased significantly than that of normal ripening fruits. The peak of SPS activity in fruits treated with propylene appeared 9 days earlier than that in fruits with normal ripening. The rate of respiration of fruit, the decline of fruit firmness and sucrose accumulation were found to be accelerated by the treatment with propylene. The SPS was found to be correlated closely with the ripening, senescence, sugar accumulation and softening of the fruits.

关 键 词： 香蕉 果实 蔗糖磷酸合成酶 成熟 衰老

领　　域： [农业科学] [农业科学]