01765naa a2200265 a 450000100080000000500110000800800410001910000170006024500550007726000090013252010220014165000180116365000150118165000120119665000230120865300160123165300220124765300270126965300270129670000300132370000180135370000250137170000150139677300880141112125232019-08-19       2002    bl uuuu     u00u1 u    #d1 aROYER, M. R.  aOutcrossing in common bean.h[electronic resource]  c2002  aJalo Precoce, Pérola, Carioca and Michelite cultivars of Common Bean (Phaseolus vulgaris L.) were used to estimate natural hybridization rates. Two experiments were carried out, one in the "wet"season and the other in the 1997/1998 "fall-winter" season. Randomized complete blocks in a split plot scheme were used, with three replications. Four row spacings (0.20 m, 0.40 m. 0.60 m and 0.80 m) were randomized within the plots. Cultivars with a recessive genetic trait were planted in subplots, in alternate rows, with the IAPAR 44 cultivar, which has vilet flowers and hypocotyl determined by dominant genes. In the "wet" season the Jalo Precoce , Pérola, Carioca and Michelite cultivars had average natural hybridization rates of 1.23, 1.34, 1.25 and 0,71%, respectively. The mean percentages were 0.82, 0.75, 0.79 and 0.76% for Jalo Precoce, Pérola, Carioca and Michelite cultivars in the "fall-winter" season, respectively. The estimates of natural hybridization had magnitudes which ranged from 0.71 to 1.66%.  ahybridization  aCruzamento  aFeijão  aPhaseolus Vulgaris  aCommon bean  aCross-pollination  aHibridização natural  aMelhoramento genético1 aGONÇALVES-VIDIGAL, M. C.1 aSCAPIM, C. A.1 aVIDIGAL FILHO, P. S.1 aTERADA, Y.  tCrop Breeding and Applied Biotechnology, Londrinagv. 2, n. 1, p. 49-54, Mar. 2002.