Relationship of Fruit Color and Anthocyanin Content of Hawthorn Germplasm Resources
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College of Horticulture, Shenyang Agricultural University, Shenyang 110866

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Foundation projects: Doctoral Initiating Project of Shenyang Agricultural University (880418037); Hawthorn Resource Conservation Project (19200357)

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    Abstract:

    The aim of this study was to evaluate the fruit color traits of hawthorn (Crataegus pinnatifida Bge.var. major N.E.Br.) germplasm resources via measuring the chromatism index and anthocyanin content. Fifty-one hawthorn cultivars that preserved at the national hawthorn germplasm resource repository (Shenyang) were used. The peel and flesh of these hawthorn resources were initially determined using a colorimeter to identify their chromatism index (L*a*, and b*), followed by the calculation of the h°C*, and CIRG (color index of red grape) values. The anthocyanin content in the hawthorn peel and flesh was measured using a microplate reader. The relationship between fruit color traits and anthocyanin content was established using correlation analysis, principal component analysis, and cluster analysis. The anthocyanin content of hawthorn peel was considerably correlated with the CIRG value of the peel and the anthocyanin content of the flesh. The a*C*, and CIRG values of the flesh as well as the CIRG value of the peel were largely influenced by the anthocyanin content of the hawthorn flesh. 51 hawthorn resources could be divided into four groups based on fruit chromatism index and anthocyanin content. The a* value and anthocyanin content of the flesh were both highest in the first group, while the peel has the lowest a* value and the highest anthocyanin content. The a* value and anthocyanin content of the peel were highest and lowest in the second group, respectively, while both were lowest in the flesh. The peel of the third group's fruit has a medium a* value and a high anthocyanin level, whereas the flesh has a higher a* value and a higher anthocyanin content. The higher a* value and medium anthocyanin content of the peel, and medium a* value and anthocyanin content of the flesh were found in the fourth group. The fourth group contained both the peel's higher a* value and medium anthocyanin levels as well as the flesh's medium a* value and anthocyanin content. Collectively, this study assigned fruit color trait using digital scores and assessed the relationship between fruit color traits and its anthocyanin concentration, thus providing a reference basis for enhancing the evaluation of hawthorn germplasm resources.

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History
  • Received:June 13,2023
  • Revised:July 06,2023
  • Adopted:
  • Online: January 08,2024
  • Published: January 08,2024
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