无花果果实发育过程中ABA和乙烯含量与果实成熟的关系
Relationship between ABA and ethylene content and fruit ripening during fig fruit development

为研究无花果果实发育过程中ABA和乙烯含量与果实成熟的关系，以玛斯义陶芬（Masui dauphine）无花果果实为试材，对果实发育过程中呼吸速率和乙烯释放量及可溶性糖、淀粉和ABA含量进行了研究。结果表明：无花果果实发育分3个时期，第1个快速生长期（时期Ⅰ）、缓慢生长期（时期Ⅱ）和第2个快速生长期（时期Ⅲ），在缓慢生长期和第2个快速生长期之间为果实发育的转折期“始熟期”。始熟期后果实淀粉分解，大量积累葡萄糖和果糖，果实快速进入成熟期。无花果果实发育过程中ABA含量整体呈下降趋势，乙烯释放量随着果实发育逐渐增加，在始熟期和呼吸速率同步出现一个高峰。结果表明无花果果实是呼吸跃变型果实，乙烯诱导果实发生一系列生理生化变化，促使无花果果实成熟。
To study the relationship between ABA and ethylene content and fruit ripening during the development of fig fruit,fig (Ficus carica L.) cultivar ‘Masui Dauphine’ was used in this study.The changes of respiratory rate,soluble sugar content,starch content,ABA level and ethylene production level were examined.The results showed that:The development of fig fruit was comprised of three phases,phase Ⅰ (the first rapid growth stage),phase Ⅱ (the lag phase of growth),and phase Ⅲ (the second rapid growth stage).The transition from phase Ⅱ to phase Ⅲ was the onset of ripening.After the onset of ripening,starch content of fig fruit was decreased,but a large amount of glucose and fructose were accumulated,and the fruit matured quickly.There was an decrease in ABA content during ripening of fig fruits.But there was an increase in ethylene production during fig fruits ripening,and during the onset of ripening a respiratory climacteric rise was concomitant with a sudden burst of endogenous ethylene production.These results suggested that fig fruit is a typical climacteric fruit.Ethylene initiated a chain of metabolic and physiological events which lead to fig fruit ripening.