01738naa a2200229 a 450000100080000000500110000800800410001910000180006024501070007826000090018552011190019465000130131365000170132665000100134365000130135365300100136670000210137670000240139770000160142170000180143777300530145514757062018-07-19       1982    bl uuuu     u00u1 u    #d1 aVIANNA, R. T.  aInbreeding depression of several introduced populations of maize (Zea mays L.).h[electronic resource]  c1982  aAn inbreeding depression study was conducted with 14 maize populations introduced from CIMMYT to the National Corn and Sorghum Research Center, Sete Lagoas, MG, Brasil. It was initiated by selfing 200 unselected So plants per populations and from each 100 ears were selected. The S1 generation of each population was represented by a mixture of 100 kernels from each of the 100 selected ears. Experiments were conducted in 1979 at two locations to evaluated yield change associated with inbreeding by selfing. A drought period caused considerable yield reduction a Piracicaba. In these populations, with inbreeding due to only one selfing generation, mean yield reduction ranged from 31 to 65% and 44 to 69% at Sete Lagoas and Piracicaba, respectively. In bothlocalization a significant interaction between population ans inbreeding depression was observed. In general materials grown under moisture stress did not respond the same as under non stress conditions. In the non stress environment data confirmed that the synthetic variety showed a significant lower inbreeding depression than broad basis populations.  abreeding  aMelhoramento  aMilho  aZea Mays  aMaize1 aGAMA, E. E. G. e1 aNASPOLINI FILHO, V.1 aMORO, J. R.1 aVENCOVSKY, R.  tMaydica, Bergamogv. 27, n. 3, p. 151-157, 1982.