New composites of popcorn to Brazil

Abstract

Although advances are obtained, the number of varieties and hybrids from inbred lines of popcorn are reduced. The objective of this work was to evaluate new composites developed in Brazil and to indicate those which present better potential to initiate an intrapopulation breeding program. Trials were carried out during 2005/2006 cropping season. Treatments included 21 genotypes (hybrid from inbred lines, composites and synthetic) cultivated in two locations (Umuarama and Cidade Gaúcha), both located in Northwest of Paraná State. Grain yield (GY) and popping expansion (PE) were evaluated by individual and joint analyses of variance. Composites UEM 5, UEM 6 and UEM 7 obtained the highest quality of the PE, with similar values to the check treatments in both locations. GY of genotypes ranged more than popping expansion over locations. Composites UEM 5, UEM 6 and UEM 7 revealed satisfactory potential both PE and GY when evaluated in Umuarama, Paraná State, Brazil.