Collection, Identification and Evaluation of Soybean Germplasm Resources in Sichuan Province
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Crop Research Institute, Sichuan Academy of Agricultural Sciences/Environment-friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, Chengdu 610066

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Foundation projects: Natural Science Foundation of Sichuan (2023NSFSC1176); The Third National Campaign of Crop Germplasm Census and Collection (111821301354052034); Sichuan Academy of Agricultural Sciences Project "1+9 Unveiling the List"(1+9KJGG001); Sichuan Provincial Finance Department (1+3 ZYGG001); Crop Germplasm Census (51000023T000009852064)

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    Abstract:

    Based on “the Third National Campaign of Crop Germplasm Census and Collection”, soybean germplasm resources were collected from different cities in Sichuan province. 192 soybean germplasm resources were identified the morphological features and major agronomic traits in the field. These soybean germplasm resources were collected from sixteen cities and forty-one counties, with enrichments at five cities including Ya'an, Leshan, Guangyuan, Bazhong and Luzhou. This study indicated that the coefficient of variation for 12 morphological traits ranged from 10.11% to 57.62%, with the highest coefficient of variation for seed number per plant and the lowest coefficient of variation for SPAD value. The results of correlation analysis showed that there was extremely significant positive correlation among plant height, stem diameter, branch number, pod number per plant and seed number per plant, while 100-seed weight was negatively correlated with branch number and pod number per plant. The results suggested that three principal components that showed a cumulative contribution rate of 76.29%, reflecting most of the morphological features by principal component analysis. 192 soybean germplasm resources were divided into four groups by cluster analysis, which had the characteristics of big 100-seed weight, high pod number, high SPAD value and long petiole length, and seven elite soybean germplasm resources were selected. Additionally, soybean germplasm resources showed good genetic diversity in terms of seed color and seed types in Sichuan province. In summary, this study revealed the genetic diversity of soybean germplasm resources in Sichuan province. Ultimately, this study offers a theoretical basis for improving soybean breeding in terms of high yield parental lines and special soybean varieties.

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History
  • Received:January 25,2024
  • Revised:
  • Adopted:
  • Online: June 11,2024
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