Development And Application Of The Fruit Uality Modifier

Today, with the rapid development of China's economy, our citizens' needs for thequantity of fruit and vegetable have been met greatly. However, the continuous problems onfood security drew much increasingly attention recently. Owning to the rapid development ofprotected agriculture, more and more out-of-season vegetables come into the markets. So,how to improve the quality of such kind of vegetables has become a research priority neededto be solved promptly.Fruit color was the most intuitive indicator when the consumers judge the maturity of thefruits and vegetables. So, it is of importance for both farmers and scientists to how to promotethe fruit coloring, to regulate the coloring process, to shorten the time of fruit coloring and toimprove the fruit quality.Till now, many products exist in the markets, which could promote fruit coloring.However, when using these products improperly may cause uneven coloring, fruit crackingand deformed fruit, or even lead to the decline of yields due to the plant hormone containedin the products. Therefore, the entry point of this study was to choose the replacement ofhormone and the biologically active components of natural plants to improve fruit quality.On the basis of previous studies, the tomatoes were chose as our test crop. The fieldexperiments were conducted. Through the determination of fruit coloring status and theinternal quality in the laboratory, the potential of the testing of self-developed qualityimprover on the promotion of fruit coloring and the improvement the intrinsic quality wastested. So, these provided an effective way for further research and theoretical basis.Though two year experiments and analysis, the following conclusions were gained.1.In the first stage the principal component analysis stage, and the results showed that bothreagent A and B have significant effects on fruit coloring. Specifically, the reagent A1000xtreatment showed the most significant effect on the increase of the concentration of vitamin C(Vc) of the tomatoes; the reagent B1000x treatment can enhance the concentration of thesoluble sugar significantly. And adding nutrient salts need to be considered in the futureexperiments in order to promote the effectiveness of the enhancement of plant growth and thefruit quality. 2In the process of the screening test for salt-tolerate dispersing agent, the anionicsodium dodecyl benzene sulfonate and non-ionic Tween-80combinations showed the highesttolerance to the quality improver added potassium salt solution, they could maintain thesteady state of the combinations, which is complied with the national agricultural standards.And when the added concentration was2‰, the combinations was the most stable.3In the validation phase of the effect of the quality improver, with the increase ofconcentration, the sugar to acid ratio in the tomato fruit, the concentration of Vc and lycopeneincreased gradually. Besides, the adding of appropriate amount of exogenous potassiumnutrients promoted the fruit weight and the tomato yields per plot. Results of this experimentshow that,compared to CK,the fruits reached the harvest standards12d in advance. Theyield of1000x treatment reached91380kg/hm2, which is13.5%higher than ck treatment.Theintrinsic quality, the titration acid content of the1000x treatment is0.11%, which is0.06%lowered than ck. Also, the content of soluble sugar, vitamin c and lycopene are1.5times,1.51times, and0.57times higher than the ck treatment,respectively.The results of the fieldsexperiment and lab analysis show that the improver can promote the color reform and fruitexpansion of the red fruit crops,and enhance the fruit quality, advance its harvest. Amongwhichthe1000x was the most optimized treatment.