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<p>Pearl millet production environments spans from severely moisture stressed to better endowed ecologies. ‘Minicore collection’, a global diversity capsule of 238 genotypes is a prized genetic resource for strengthening breeding programs. With the aim to evaluate genetic merit of pearl millet minicore for best trait combinations for different production environments, data on eight metric traits were recorded from field trials conducted for four years during 2021–2024. The results revealed significant effects of genotypes, environment and genotype × environment with higher mean squares due to environments indicating larger role of environment in trait expression. Fifteen early-flowering including two extra-early genotypes hold strong promise for drought‐prone and short‐season environments, where rapid flowering is a vital adaptive trait. Days to flowering and panicle length exhibited both moderate-to-high heritability whereas in contrast, grain yield, panicle and tiller number showed low heritability reflecting a greater influence of environmental variation. Genotypes IP 13387, IP 19964, IP 5869, IP 10953, IP 7422, IP 10371, IP 12374 and IP 16402 stands out based on MGIDI and MTSI indices representing key candidates with higher stability and broad adaptability. These findings highlight the potential of minicore to accelerate pearl millet improvement under changing climatic conditions and diverse production environments.</p>

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Multi-trait ideotype-based selection and stability analysis in pearl millet minicore collection for diverse production environments

  • 期刊论文

  • 发表日期：

    2026年1月12日

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  • Chandan Kapoor,
  • Anamika,
  • Sumer Pal Singh,
  • Sudhir Kumar,
  • S. Mukesh Sankar,
  • Nirupma Singh,
  • Tripti Singhal,
  • Naveen Aavula,
  • S. Hemanth,
  • Vikas Khandelwal,
  • V. Chinnusamy

摘要

Pearl millet production environments spans from severely moisture stressed to better endowed ecologies. ‘Minicore collection’, a global diversity capsule of 238 genotypes is a prized genetic resource for strengthening breeding programs. With the aim to evaluate genetic merit of pearl millet minicore for best trait combinations for different production environments, data on eight metric traits were recorded from field trials conducted for four years during 2021–2024. The results revealed significant effects of genotypes, environment and genotype × environment with higher mean squares due to environments indicating larger role of environment in trait expression. Fifteen early-flowering including two extra-early genotypes hold strong promise for drought‐prone and short‐season environments, where rapid flowering is a vital adaptive trait. Days to flowering and panicle length exhibited both moderate-to-high heritability whereas in contrast, grain yield, panicle and tiller number showed low heritability reflecting a greater influence of environmental variation. Genotypes IP 13387, IP 19964, IP 5869, IP 10953, IP 7422, IP 10371, IP 12374 and IP 16402 stands out based on MGIDI and MTSI indices representing key candidates with higher stability and broad adaptability. These findings highlight the potential of minicore to accelerate pearl millet improvement under changing climatic conditions and diverse production environments.