Chiavarino, MaurizioRosato, Carmen Luisa MarcelaRosi, PabloPoggio, LidiaNaranjo, Carlos2024-01-252024-01-251998Chiavarino, Amilcar M., et al. «Localization of the Genes Controlling B Chromosome Transmission Rate in Maize ( Zea Mays Ssp. Mays , Poaceae)». American Journal of Botany, vol. 85, n.o 11, noviembre de 1998, pp. 1581-85. https://doi.org/10.2307/2446484.0002-912210.2307/2446484https://hdl.handle.net/20.500.14352/95348This research was supported by grants of the “Consejo Nacional de Investigaciones Cienti´ficas y Te´cnicas (CONICET),” “Universidad de Buenos Aires,” and “Universidad Nacional de La Plata,” Argentina. M. R. and A. M. C. were supported by scholarships from CONICET. L.P. and C.A.N. belong to the “Carrera del Investigador del CONICET”.In previous papers we found that the frequency of B chromosomes in native races of maize varies considerably in different populations. Moreover, we found genotypes that control high and low transmission rates (TR) of B chromosomes in the Pisingallo race. In the present work crosses were made to determine whether the genes controlling B‐TR are located on the normal chromosome set (As) or on the B chromosomes (Bs). We made female f.0B × male m.2B crosses between and within high (H) and low (L) B‐TR groups. The Bs were transmitted on the male side in all cases. The mean B‐TR from the progeny of f.0B (H) × m.2B (H) and f.0B (H) × m.2B (L) crosses was significantly higher than that from f.0B (L) × m.2B (L) and f.0B (L) × m.2B (H) crosses. The results show that the B‐TR of the crosses corresponds to the H or L B‐TR of the 0B female parents irrespective of the Bs of the male parent. This indicates that B‐TR is genetically controlled by the 0B female parent and that these genes are located on the A chromosomes.engjournal article1537-2197https://doi.org/10.2307/2446484restricted access581.15Zea mays ssp. maysB chromosomeB transmission rate controlMaizeMaize native racesPoaceaeGenética2417.14 Genética Vegetal