3份无刺刺梨材料果实外观形态与营养成分评价OA

[Objective]A comprehensive study on the morphological characteristics and nutritional quality of thornless Rosa roxburghii,with multidimensional analysis to reveal its biological traits and nutritional value,provides a theoretical basis for the utilization of its resources.[Method]The study investigated the fruit morphological traits(fruit longitudinal diameter,transverse diameter,fruit shape index,single fruit weight,seed weight,edible rate and seed number),nutritional quality(soluble solids,ascorbic acid,citric acid,L-malic acid,total tannin,fructose,sucrose,glucose and superoxide dismutase),and mineral nutrient elements(potassium,calcium,zinc,magnesium,iron and inorganic phosphorus)of three thornless R.roxburghii materials(24-1,24-2,24-3)and the control(CK).Correlation analysis and principal compo-nent analysis were performed on the 22 quality indicators.[Result]In terms of morphological indicators,the fruit shape index and seed weight of 24-3 is significantly higher than those of the control(CK)(P＜0.05,the same as below),indicating that its fruit shape was more round-ed.The edible rates of 24-1 and 24-2 were significantly higher than those of CK,with 24-1 having the highest edible rate.Additionally,the fruit longitudinal diameter,transverse diameter,and single fruit weight of the three thornless R.roxburghii materials all showed significant differences compared to CK,with all these indicators being superior to CK.Nutritional component analysis revealed that the contents of ascor-bic acid,citric acid,and L-malic acid in the three thornless R.roxburghii materials were significantly higher than the CK.Among them,24-2 had the highest ascorbic acid and citric acid contents,while 24-3 had the highest L-malic acid content.Meanwhile,the fructose,glucose and sucrose contents of the three thornless R.roxburghii materials were also significantly higher than the CK,demonstrating an overall superior performance.Specifically,24-2 had the highest fructose and sucrose contents,and 24-3 showed the most glucose content.The study also found that the SOD activity of the three thornless R.roxburghii materials were significantly higher than the CK,with 24-2 exhibiting the highest SOD activity.Analysis of mineral nutrients indicated that the contents of potassium,calcium,zinc,magnesium,iron and phosphorus in the three thornless R.roxburghii materials were significantly higher than those in CK,and these elements showed excellent performance across the thornless R.roxburghii materials.Specifically,24-1 had the highest calcium,zinc,and magnesium contents;24-2 ranked first in potassium and iron contents;and 24-3 had the highest phosphorus content.[Conclusion]The 24-3 exhibited the best overall quality performance,and phos-phorus(P),transverse diameter(TD),single fruit weight(SFW),potassium(K),sucrose content(SC),longitudinal diameter(LD),fruit shape index(FSI),superoxide dismutase(SOD)activity,tannin content(TC)and iron(Fe)content were identified as key indicators for quality grading of thornless R.roxburghii.The combined application of these parameters provides a robust and scientifically sound basis for objectively evaluating and classifying the quality of thornless R.roxburghii germplasm resources,which is crucial for optimizing resource utili-zation and breeding programs aimed at improving fruit quality traits.