01869naa a2200229 a 450000100080000000500110000800800410001910000180006024500460007826000090012452012680013365000130140165000160141465000090143065300130143965300230145265300170147565300120149270000220150470000230152677300900154912125902004-10-27       2002    bl uuuu     u00u1 u    #d1 aSEIFERT, A L.  aInheritance of male-sterility in soybean.  c2002  aGenetic studies on a spontaneous male-sterile/female-fertile soybean mutant identified at the Embrapa Soybean breeding program were carried out in Londrina County, State of Paraná, South Brazil. The mutant showing segregation for male-sterility (BR97-17958) was selected within F5 progeny lines derived from the BR5(6) x Paranaíba cross performed in 1995. The F1, F2 and F3 generations from test-crossings among heterozygous plants of the BR97-17958 line and recessive homozygous plants (male-sterile) of the T 266H (ms1 ms1), T 259H (ms2 ms2), T 273H (ms3 ms3), T274H (ms4 ms4), T277H (ms5 ms5) and T 295H (ms6 ms6) lines were studied to identify whether this mutant defines a new locus or represents and indepedent mutation in one of the six loci already described. The F1, F2, and F3 plants from the crosses were visually classified as presenting normal phenotype of male fertility or male-sterily. Results from inheritance and allele test study among the mutant genotypes and the recessive homozygous male-sterile lines (m1, m2, m3, m4, m5,  and m6) provided evidence that the male-sterile characteristics of the line BR97-17958 have a simple recessive Mendelian  inheritance and represents a mutatin in a locus different from the ms-loci already described.  agenetics  aGlycine Max  aSoja  aHerança  aMacho-esterilidade  aMale-sterile  aSoybean1 aALMEIDA, L. A. de1 aKIIHL, R. A. de S.  tCrop Breeding and Applied Biotechnology, Londrinagv. 2, n. 4, p. 543-548, Dec. 2002.