01452naa a2200265 a 450000100080000000500110000800800410001910000180006024501260007826000090020452007410021365000190095465000130097365000180098665000140100465000120101865000160103065000350104665000090108165300150109065300140110565300140111965300150113377300380114815519331996-10-15       1994    bl ---       0--  u    #d1 aSPEHAR, C. R.  aField screening of soya bean (Glycine max (L.) Merrill) germplasm for aluminium tolerance by the use of augmented design.  c1994  aSelection for aluminium tolerance is necessary to adapt the soya bean crop to vast areas of acid soil in the tropics such as the Brazilian Savannas (Cerrados). The breeding programmes include field testing of large numbers of varieties. The tests are laborious, time consuming and need to be repeated to minimize effects of uncontrolled environmental fators. The present results show that augmented designs are efficient in the identification of Al-tolerant genotypes. These designs (i) allow elimination of soil differences as common causes for error in comparison of entries, and (ii) can be successfully employed in genetic studies and breeding programmes for crop improvement, being more cost effective than fully replicated trials.  aplant breeding  asoybeans  aAclimatação  aAlumínio  aCerrado  aGlycine Max  aMelhoramento Genético Vegetal  aSoja  aAdaptation  aAluminium  aTolerance  aTolerancia  tEuphyticagv.76, p.203-213, 1994.