Yield of simple crosses of maize with protein quality of Valles Altos of México
DOI:
https://doi.org/10.29312/remexca.v8i3.31Keywords:
Zea mays L., androesterility, hybrids, protein quality, yieldAbstract
The incorporation of male sterility into protein quality maize (QPM) genotypes (Zea mays L.), facilitates seed production and offers a maize grain with better protein quality of agronomic advantages. Experiments were carried out in Cuautitlán Izcalli and Santa Lucía de Prías, Texcoco, State of Mexico, in order to determine the productivity of simple maize crosses between six androthermal lines and three elite lines, all of them QPM. 18 single crosses and trilineal hybrids H 47 AE and TSIRI PUMA of normal quality as controls were evaluated in a randomized complete block experimental design with three replicates. The grain yield, days at male flowering, height of plant and cob, number of rows per cob, number of grains per row and number of grains per cob were estimated. The best simple quality protein maize crosses (QPM) were LAEQ5 CML354, LAEQ4 CML173 and LAEQ3 CML173 in both localities, with yields greater than 8 t ha-1, exceeding the yield of commercial controls from 43 to 57%. These crosses could participate in the formation of superior trilineal hybrids when combined with a third line that generates a good hybrid. Due to their participation in the upper crosses, the best QPM androthermal lines were LAEQ3, LAEQ4 and LAEQ5, while the best elite QPM lines were CML 173 and CML 354.
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