Developmental Stages of Akebia trifoliata Fruit Based on Volume

Akebia trifoliata, commonly named augmelon (means August plus melon), has been domesticating as a new artificial cultivation fruit crop in China for several years. Generally, field management measurements are severely dependent on the development dynamic of harvest organs, and therefore study stage A. trifoliata is urgent production. In this study, four cloned lines with various spindle, nephroid, pyriform Banana-like shapes, were selected to observe developmental parameters, including volume, weight, length width from pollination maturity. Volume rather than or width, which can minimize influence shape growth stage, was finally employed primary parameter dividing stages. Then Logistic model volume established according data fruit, other three fruits suitability mathematical model. The resulted showed that curve appeared typical double sigmoid all shapes fruits. Based inflection points curve, classified five stages order: fast stretch (FS) lasting 48 days, stabilization (SS) 30 tardy expansion (TE) 51 suspended (SE) 21 days (FE) days. Comprehensively, an ideal augmelon, five-stage could be applied reference both gardener scientist refer status.