Comparison of half-sib and S1 recurrent selection in 'Krug Yellow Dent'

A quantitative trait response evaluation to selection in the BS13(S) maize (Zea mays L.) population

“…Additionally, upon removal of effects from random genetic drift, yield gains for both selection methods were less than predicted. Tanner and Smith (1987) reported similarly to , and Homer et al (1989) that Si progeny selection resulted in decreased inbreeding depression and produced better yielding bulk samples of Si progeny. In addition to non-additive gene action, Tanner and Smith (1987) attributed the inferior gain predictions to over-estimated heritabilities used in their prediction equations and a reduction in genetic variance in the population after multiple cycles of selection.…”

“…The conclusion for lack of superior responses from S% progeny selection in each case was attributed largely to the importance of overdominance. Tanner and Smith (1987) conducted a similar comparison study by comparing halfsib and Si progeny recurrent selection for eight cycles of selection in the Krug Hi I maize population (Lonquist, 1949). Tanner and Smith (1987) separated the responses observed into two discrete classes, those observed for cycle 0 through 4 and those observed for cycles 4 through 8.…”

“…Tanner and Smith (1987) conducted a similar comparison study by comparing halfsib and Si progeny recurrent selection for eight cycles of selection in the Krug Hi I maize population (Lonquist, 1949). Tanner and Smith (1987) separated the responses observed into two discrete classes, those observed for cycle 0 through 4 and those observed for cycles 4 through 8. They observed that the grain yield gains of the population per se from the inbred progeny selection method were superior for the early cycles of selection.…”

“…S] and S2 progeny recurrent selection are both inbred progeny recurrent selection methods that have been evaluated extensively Tanner and Smith, 1987;. While some of the evaluation studies report positive responses for disease resistance , insect resistance , or cold tolerance , none have proven inbred progeny recurrent selection as superior to other methods of recurrent selection for long term response of grain yield.…”

“…The self progeny recurrent selection method, also referred to as inbred progeny recurrent selection , is the method that argued was the superior population improvement method. This method has been evaluated and concluded to be ineffective for improvement of grain yield in multiple maize populations Tanner and Smith, 1987;and Homer et al, 1989). Additionally, the latter two studies indicate, via direct comparisons of selection methods, that inbred progeny selection is not superior to other methods of selection.…”