Heterosis percentage of yield traits in quality maize single crosses hybrids developed in Argentina

CORCUERA, VR; BERNATENE, EA Y POGGIO, L

Maize Genetics Cooperation Newsletter

University of Illinois

Lugar: Illinois; Año: 2007 vol. 81 p. 20 - 21

1090-4573

 During the growing season 2005/06, twenty single cross hybrids, generically termed CIG, and their parents were evaluated in a completely randomized blocks field trial design (three replicates) at the Instituto Fitotécnico de Santa Catalina and CIGEN placed in the location of Llavallol province of Buenos Aires, Argentina. Genotypes were evaluated for minimun potential yield expressed in kilograms/hectare (Y), ear weight (EW), kernel weight per ear (KWE) and cob percentage (% C).The single crosses may be divided into three groups: 1) wx1, 2) o2 and 3) double recessive (wx1 o2 hybrids). Considering that these single crosses carry one or two mutant genes usually associated with lower yield, the high HP heterosis values and minimum potential yield found in some makes them candidates for commercial release.