Selection studies in sugar beet breeding. III. Efiiciency of mass selection and application of ellipsis with equal probability deviation for mother line selection.

Abstract

The authors compared the efficiency of mass selection and mother line selection for root weight and sucrose content using Donyu No. 2 orignal seed population. The ellipsis of equal probability deviation with P=0.05 was applied to the Donyu No. 2 population, and the mother lines out of ellipsis were selected at each quadrant as genetically superior lines, and were synthesized as a new population M, L and K respectively. Our experimental results showed no significant. difference between the original and mass selection population. The new synthetics M, L and K were significantly superior to the original population in root yield, but the same in sucrose content.