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Corn hybrids use in mechanized planting areas in Panama represent an annual investment of US $ 6,000, 000.00 in seed value importance. This strategic corn production input increased 30% the corn production and productivity in Panama. The presented study was made to determine the adaptation, yield potential and agronomic characteristics of new hybrids developed by IDIAP'S corn hybrids program with yellow grain homozygous lines organited at CIMMYT. Diallel crosses were evaluated in 1986, to predict the formation of double and triple yellow grains, superior hybrids were evaluated in 1987 at two sites of the Los Santos corn area. In the combined variance analysis for yield and agronomic characteristics highly significant differences were detected, between genotypes and the genotype-environment interaction for all variables studied; in the triple crosses serial some hybrids were identified with better yield and agronomic characteristics than X-304-C, yields of experimental hybrids IDIAP-304, 305 and 306 were 5010, 4939 and 4816 kg/ha, respectively, 17% better than Pioneer 304C. Estimeted correlations between yield and agronomic characteristics showed a negative value (r=0.59) for yield an ear cover. Superior hybrids evaluation and seed increases in farmer's field are recomended.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto de Innovación Agropecuaria de Panamá
1990
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| Online Access: | http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/520 |
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