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[Ecological regionalization of cotton varieties based on GGE biplot]
Nai-Yin Xu1, Guo-Wei Zhang, Jian Li
1Ministry of Agriculture Key Laboratory of Crop Growth Regulation, Nanjing Agricultural University, Nanjing 210095, China. naiyin@jaas.ac.cn
Summary
Ecological regionalization of Yangtze River basin cotton varieties was performed using heritability-adjusted GGE biplot analysis. This identified three distinct cotton regions to guide variety selection for improved lint cotton yield.
Area of Science:
- Agronomy
- Genetics
- Biometrics
Context:
- The Yangtze River basin is a significant cotton-producing area.
- Optimizing cotton variety selection requires understanding regional ecological adaptations.
- Previous regionalization efforts may not fully account for genotype-by-environment interactions.
Purpose:
- To ecologically regionalize cotton-planting areas in the Yangtze River basin based on lint cotton yield.
- To apply heritability-adjusted GGE biplot analysis for robust regionalization.
- To provide a scientific basis for selecting appropriate cotton varieties in different basin regions.
Summary:
- Heritability-adjusted GGE biplot analysis was employed across 15 trial sites in the Yangtze River basin.
- Cotton-planting areas were classified into three ecological regions: Sichuan Basin, Nan-Xiang Basin, and a majority complex region.
- The Information Ratio (IR) method was used to adjust the regionalization results for enhanced accuracy.
Impact:
- The study provides a refined ecological regionalization map for cotton in the Yangtze River basin.
- Findings will aid breeders and farmers in making informed decisions for cotton variety deployment.
- Improved variety selection is expected to enhance lint cotton yield and agricultural sustainability in the region.
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