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Associations between nitrogen harvest index and yield characteristics of oats

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Summary

Fifty lines of oats (Avena Sativa L.) with a broad range of nitrogen harvest indexes (NHI) and nine check lines were evaluated in 15 environments to study the association between NHI and adaptability of oat lines to soils with different productivity levels due primarily to different amounts of N. Three yield characteristics (i.e., mean across environments, regression response to improving environments, and stability of response) were used to measure adaptability. The lines were significantly variable for means of grain and straw yield, for responsiveness to improving environments, and for stability of yield. Among the yield characteristics, only the mean of grain yield was significantly correlated with NHI.

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Authors and Affiliations

  1. Department of Agronomy, Iowa State University, 50011, Ames, Iowa, USA

    K. J. Frey

  2. Dep. Genet., Universiti Kebangsaan, Malaysia, Bangi, Selangor, Malaysia

    N. MD. Kairudin

Authors
  1. N. MD. Kairudin
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  2. K. J. Frey
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Additional information

Journal Paper No. J-13336 of the Iowa Agric. and Home Econ. Exp. Stn., Ames, Iowa, 50011. Project 2447.

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Kairudin, N.M., Frey, K.J. Associations between nitrogen harvest index and yield characteristics of oats. Euphytica 47, 1–10 (1990). https://doi.org/10.1007/BF00040355

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  • DOI: https://doi.org/10.1007/BF00040355

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