01827naa a2200241 a 450000100080000000500110000800800410001902400440006010000280010424501240013226000090025652011220026565000100138765000130139765000180141065000220142865000120145065000100146265000230147265000240149565000130151977300530153212048652023-06-21       1996    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1007/BF000228372DOI1 aZIMMERMANN, M. J. de O.  aBreeding for yield, in mixtures of common beans (Phaseolus vulgaris L.) and maize (Zea mays L.).h[electronic resource]  c1996  aDespite the growing industrialization, technification and transformation that is happening in the agriculture around the world, and despite that agricultural research has always concentrated its effort on sole crops, multiple cropping systems have historically been important for common bean production in tropical countries. The reasons for this fact, are economical and social, as well as biological. Bean breeders have always been questioned on their work, because the development of new varieties is usually done in sole crop, but the varieties are grown in either systems. This paper addresses a set of questions that are usually presented to the breeders, in light of the evidence obtained from many trials conducted in Brazil and in the U.S.A.: Will the genotypes bred for sole crop conditions, perform well when grown in intercrop; How different should a genotype be, for cultivation in intercropping compared to genotypes developed for sole crop conditions; Is there a need for special breeding programs for intercropping and How could a breeding program focus the question of multiple (associated) cropping?  aBeans  aGenotype  aIntercropping  aSelection methods  aFeijão  aMilho  aPhaseolus Vulgaris  aSeleção Genética  aZea Mays  tEuphyticagv. 92, n. 1-2, p. 129-134, Jan. 1996.