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- W12445497 abstract "Culfcivars for use in low-productivity environments (LPE) can be selected directly in LPE or indirectly in mediumor high-productivity environments (MPE or HPE, respectively). The best productivity level at which to select oat genotypes for use in LPE was predicted for a popula tion of 116 random oat lines tested in replicated yield trials in 36 Iowa environments. The 36 trials were classified as LPE, MPE, or HPE, and grain yield at each productivity level was considered a separate charac2 ter. Heritabilities (H ) of grain yield within and genetic correlations (r^) among productivity levels were used to predict expected response in 2 LPE to selection in LPE, MPE, and HPE. H was highest in HPE, but r^ between yield in LPE and HPE was only 0.59. For 10% selection based on genotype means in 2 or 4 two-replicate yield trials, the greatest yield gain in LPE was predicted to result from selection in MPE. For selection in 12 six-replicate trials, the greatest yield gain in LPE was predicted to result from direct selection in LPE. These results show that selection in HPE is not necessarily optimum when genotypes are destined for use in LPE. Additional index words; Avena sativa L., genotype by environment interaction, genetic correlation, stress environments, selection, effect of replication." @default.
- W12445497 created "2016-06-24" @default.
- W12445497 creator A5051184097 @default.
- W12445497 date "2018-08-13" @default.
- W12445497 modified "2023-09-23" @default.
- W12445497 title "Selection of oat lines for use in low-productivity environments" @default.
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- W12445497 doi "https://doi.org/10.31274/rtd-180813-13030" @default.
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