| Key germplasm developing of foxtail millet in arid and semi\|arid areas based on phenotypic traits |
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| DOI：10.7606/j.issn.1000-7601.2025.01.03 |
| Key Words: foxtail millet phenotypic traits key germplasm sampling strategy representative evaluation arid and semi\|arid areas |
| Author Name | Affiliation | | ZHAO Xiaoqin | Dingxi Academy of Agricultural Sciences, Dingxi, Gansu 743000, China | | JIA Ruiling | Dingxi Academy of Agricultural Sciences, Dingxi, Gansu 743000, China | | LIU Junxiu | Dingxi Academy of Agricultural Sciences, Dingxi, Gansu 743000, China | | WEN Yinhua | Dingxi Academy of Agricultural Sciences, Dingxi, Gansu 743000, China | | LIU Yanming | Dingxi Academy of Agricultural Sciences, Dingxi, Gansu 743000, China | | SHI Lili | Dingxi Academy of Agricultural Sciences, Dingxi, Gansu 743000, China | | ZHANG Juanning | Dingxi Academy of Agricultural Sciences, Dingxi, Gansu 743000, China | | MA Ning | Dingxi Academy of Agricultural Sciences, Dingxi, Gansu 743000, China |
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| Abstract: |
| In this study, a total of 871 foxtail millet germplasm resources were categorized based on their botanical varieties. Key accessions were identified through the analysis of 17 phenotypic traits, employing the square root strategy, UPGMA clustering within groups, and random sampling within individual clusters. These key accessions were evaluated using t-test, F-test, Chi-squared test, and phenotypic retention ratio analyses. Finally, the principal components analysis and the histogram analysis were used to re\|confirm the foxtail millet key germplasm. A total of 85 as key germplasm was selected, accounting for 9.8% of total resources, including 21 white varieties, 49 yellow varieties, 3 orange varieties, 5 cyan varieties, 4 red varieties, 2 black varieties, and 1 brown variety. The results of significant analysis showed that the variance (P from 0.047 to 0.986), coefficient of variation (P=0.965), and Shannon\|weaver diversity index (P=0.873) for 17 phenotypic traits were not significantly different between key germplasm and entire collection (P＞0.05), and the distribution range, the ratio of phenotypic retention (0.812~1.402) of entire collection were preserved. The phenotypic correlations displayed the same genetic association and distribution frequency between the two collections. Thus, the key germplasm of foxtail millet in arid and semi\|arid areas can represent the genetic variability and reduce the genetic population in entire resources and can provide a theoretical basis for evaluation, innovation of foxtail millet and cultivation of new varieties. |
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