01674naa a2200241 a 450000100080000000500110000800800410001910000190006024501200007926000090019952010060020865000120121465000120122665000120123865300270125065300260127765300130130365300130131665300230132965300190135270000230137177300380139417523801995-01-04       1994    bl ---       0--  u    #d1 aMELO, P. E. de  aEffect of Ogura male-sterile cytoplasm on the performance of cabbage hybrid variety. I. Vegetative characteristics.  c1994  aCabbage hybrid seeds are commercially produced by means of self-incompatibility. This system may show some instability mainly under tropical conditions, where cytoplasmic male sterility can be an alternative approach for hybrid seeds production. However, cabbage hybrids holding Ogura male-sterile cytoplasm show some irrgularities during development. By assessing some characteristics during the growing cycle of male-sterile cabbage hybrids and comparing them to genomic similar male-fertile ones and to the most common cabbage hybrid cultivated in Brazil, it was observed that the male-sterile hybrids had the same vigour, uniformity, number of leaves, resistance to Xanthomonas campestris pv. campestris, and earliness as their male-fertile counterparts and performed better than the commercial check hybrid for some of these characteristics. Although male-sterile hybrids showed yellowing of leaves, some parental combinations succeeded in overcoming or strongly reducing this cytoplasmic effect.  acabbage  aCerrado  aRepolho  aAuto-Incompatibilidade  aBrassica oleracea var  acapitata  aHibridos  aMacho-Esterilidade  aMale-Sterility1 aGIORDANO, L. de B.  tEuphyticagv.76, p.117-123, 1994.