Abstract
k]Triticale is a material in evolution; thus, it carries typical reproductive problems of those individuals with two genomes in an unique cytoplasm and where the stabilization process is yet evolving. The objectives of this study were to estimate the strict sense heritability of spikelet fertility and meiotic index in hexaploid triticale and to determine the respective correlated responses and those related to several agronomical traits. Sixty 60 F2 3 families were evaluated during 1997 using a completely randomized design. A random sample of five principal culms per family was taken in order to analyse ten traits. A 0.25 and 0.38 values of realized heritabilities were obtained for spikelet fertility an meiotic index, respectively.Corrdated responses respect to grain number and grain yield per spike, but not for other agronomic and cytologic characters analysed were observed when the plants were selected according the spikelet fertility selection criteria. The grain number per spikelet could be used as selection criteria to improve it and indirectly grain yield per spike.
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