Summary
Five cycles of divergent mass selection for crown height in sugar beets gave average gains of 11.3% to 24.1% per cycle. Realised heritabilities were about 0.4. This progress from mass selection was obtained by paying special attention to soil uniformity, seedbed preparation and sowing, regular stands with plant distances of 50 cm, selection per plot, checking of the measurements, equal representation of seed parents in the next generation, reasonable population sizes and flexible selection intensities.
Comparing the data of the generations grown in different seasons with the data of the same generations in one growing season resulted in very high correlation coefficients. It is concluded that mass selection can still be a powerful method of intrapopulation improvement.
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Mesken, M. Mass selection for crown height in sugar beets (Beta vulgaris L.). 1. Divergent selection in diploids. Euphytica 36, 129–145 (1987). https://doi.org/10.1007/BF00730656
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DOI: https://doi.org/10.1007/BF00730656