Comparación de dos métodos para la predicción del comportamiento de híbridos de maíz
DOI:
https://doi.org/10.59741/agraria.v3i1-2-3.524Keywords:
Zea mays L., yield prediction, B of Jenkins, general combining abilityAbstract
In the programs of genetic melioration of plants, predicting the yields in hybrids plays an important role, since in this way it is possible to know the best combinations the parents for its formation. The objective of this work was to compare the B method of Jenkins (PR1) with the one obtained through the sum of general combinatory aptitudes of the parents (PR2) for the prediction of simple, double, and triple hybrids of maize (Zea mays L.). Correlation between the predicted values and the yields obtained in the per se evaluation of crosses was analyzed with the purpose of determining which of both methods makes a more accurate prediction. The results showed that the correlation between the evaluated, and the predicted values, with the B method of Jenkins were not significant in double and triple crosses with values of r = 0.263 and 0.097 respectively. Nevertheless, the correlation between the evaluated, and the predicted ones by means of the method of the sum of the general combinatory aptitude of the parents registered a significant (P£ 0.01) of r = 0.534 ** for simple crosses, and a significant (P£ 0.05) values of r = 0.528* and 0.838* for doubles and triple crosses respectively. It may be concluded that the method of the sum of the general combinatory aptitudes of the parents is a better predicting method for yields than the method B of Jenkins.
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