Postęp hodowlany w plonowaniu pszenicy jarej w Polsce

The yield and other traits of 27 Polish spring wheat varieties developed in 1925-1997 were studied in field experiments conducted in 1997-1999. The yearly breeding progress was found to amount to 28.6 kg ha-1. The varieties developed after 1986 averaged higher yields by 41% compared to the ones developed before 1939. The modern varieties were 22 cm lower than the ones from before 1939 and the harvest index of this variety group increased from 27 to 36%.

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