Abstract:
【Objective】 To evaluate the texture diversity of F
1 hybrid fruit between jujube and jujube and reveal the relationship between different texture fruit and split fruit.
【Methods】 Correlation analysis, principal component analysis and cluster analysis were used to conduct TPA analysis on fruit of F1 generation and its parents of jujube male sterility JMS2 (
Z.jujuba JMS2)× jujube Xing16 (
Z.acidojujuba) and to compare Dehiscent fruit rate. By analyzing the stress curve, 7 fruit texture parameters including hardness, adhesion, cohesiveness, elasticity, breaking force, adhesiveness and chew ability were obtained.
【Results】 The results showed that the indexes of fruit texture were separated to different degrees, and the coefficient of variation was 17.79%-52.43%. Correlation analysis found that elasticity, rupture strength, adhesiveness and chewiness were extremely positively correlated, correlation coefficients were distributed between 0.33-0.94, and hardness, adhesiveness and chewiness had strong correlation with other indicators and cohesion were very negatively correlated with hardness, fracture force, and the adhesive. Using principal component analysis, the seven texture parameters were transformed into four principal components contributing to 96.47%, which were hardness factor, cohesion factor, adhesion factor and elastic factor. According to the four fruit essence landlord component cluster analysis, the hybrid group different fruit quality was divided into three groups, which were dense soft group, high elastic hard maternal group and median paternal group. Median paternal group is the largest among the three groups, accounting for 76.56% of the total.
【Conclusion】 It is found that the group with high hardness, viscosity and elasticity parameters or high pulp cohesiveness has lower Dehiscent fruit rate.