Study on Nut Phenotypic Diversity of Ancient Walnut Germplasm Resources in Xinjiang
Using morphological difference analysis and other methods, this study investigated the phenotypic trait diversity of ancient walnut germplasm nuts in Xinjiang, providing theoretical references for the study of walnut germplasm origin and resource protection. We measured 16 qualitative traits and 12...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Society for Horticultural Science (ASHS)
2025-03-01
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| Series: | HortScience |
| Subjects: | |
| Online Access: | https://journals.ashs.org/hortsci/view/journals/hortsci/60/4/article-p467.xml |
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| Summary: | Using morphological difference analysis and other methods, this study investigated the phenotypic trait diversity of ancient walnut germplasm nuts in Xinjiang, providing theoretical references for the study of walnut germplasm origin and resource protection. We measured 16 qualitative traits and 12 quantitative traits of 304 Xinjiang wild walnut germplasm and evaluated the phenotypic traits of ancient Xinjiang walnuts using normal distribution, cluster analysis, and correlation analysis methods. The results showed that among the 304 resources, the coefficients of variation for traits such as single fruit weight, single kernel weight, kernel percentage, and shell thickness were relatively high. Correlation analysis revealed that there were positive correlations between single fruit weight and nut length, shell carcass and single kernel weight, among other 45 pairs of data. There were significant negative correlations between transverse diameter and fruit shape index, shell thickness and suture width, and extremely significant negative correlations between shell thickness and single kernel weight, fruit shape index and shell carcass. The resource materials could be divided into six categories, with the results mainly related to nut color, nut shape, kernel odor, fruit surface smoothness, single fruit weight, kernel percentage, shell thickness, and nut dimensions. Ancient Xinjiang walnuts exhibit rich genetic diversity in phenotypic traits. Single kernel weight, single fruit weight, kernel percentage, and shell thickness can serve as reference standards for evaluating the quality and breeding of ancient Xinjiang walnuts in China. |
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| ISSN: | 2327-9834 |