Abstract
Genotypes of spring wheat and triticale exhibited significant differences in spike harvest index (SPHI). SPHI averaged 78% over genotypes and experiments. Genotype SPHI differed by up to 13% units. SPHI, however, was not correlated with either plot harvest index, or grain yield.Key words: Spike harvest index, genotypic differences, spring wheat, Triticum aestivum L.
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