| Summary: | With one or two cycles of recurrent hybridization, with or without neutron irradiation, improvements in selection for high yield and high yield components appear possible through a notable increase in variability and averages. Irradiation itself was not effective in this regard.
In all treatments, the number of pods per plant (X) constituted a good index of grain yield (W). In hybrids but not in the parents, W was significantly correlated with the number of seeds per pod (Y) and with seed weight (2); however, the correlation coefficients were very
low. The XY and XZ correlation coefficients were also highly significant and relatively low, with the XY coefficients showing a tendency to decrease with hybridization and with irradiation. Considering the high heterogeneity and the reduced magnitude of their correlation coefficients, Y and Z did not appear to be closely correlated.
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