摘要： 为改进甜瓜货架期，利用成熟果实乙烯释放量及变化速率存在显著差异的3个甜瓜变种为亲本，配制了皇后×9-8（非跃变类型材料间）和皇后×Charentais（非跃变类型与跃变类型材料间）两个组合，对各组合F₁，F₂及回交世代BC果实中乙烯的生成变化及果实脱落性、外果皮迅速黄化等相关性状的遗传变化进行了分析。结果表明，甜瓜果实中乙烯生成量为不完全显性遗传，受两对以上基因控制。在皇后×Charentais组合的F₁中，内源乙烯含量在采收1d后表现出急剧升高，同时伴随着外果皮迅速黄化及果柄脱落的发生，根据这些性状在F₂及分别与父母本回交世代中的不同分离比率指出，乙烯的跃变类型、外果皮迅速黄化及果柄脱落在甜瓜果实中为显性遗传。

关键词: CucumismeloL., 变种, 货架期, 乙烯, 呼吸跃变, 遗传分析

Abstract: For improving the shelf-life of melon fruit, the experiment was conducted to evaluate the inheritances of ethylene production, abscission of peduncle and rapid yellowing of epidermis in melons. Queen×9-8 (within non-climacteric melons) and Queen×Charentais (among non-climacteric and climacteric melons) including their F₁, F₂ and BC generations were obtained from these three varieties with contrasting ethylene production and rate of change. Results showed that inheritance of ethylene production in melon was of incomplete dominance mode, and controlled by more than two genes. Internal ethylene concentration in F₁ generation of Queen×Charentais displayed a great rise at one day after harvest and companied with abscission of peduncle and rapid yellowing of epidermis. The different segregation ratios in F₂ and BC generations suggested that the inheritances of these characters were of dominance mode. Shelf-life of melons can be improved by back-crossing with low ethylene parent at early stages.

Key words: Cucumis melo L., Variet ies, Shel-f life, Ethylene, Climacteric, Inheritance

中图分类号: 

• S652.01