Using the same group of tetraploid perennial teosinte plants mentioned in the previous work, young tassels from three stems of each plant were fixed. In each of these tassels two spikelets, located in different branches, were selected and in each spikelet 50 cells at the diakinesis stage were analyzed. A summary of the data obtained is presented in Table 2. The statistical analysis of these data showed significant differences among plants but not within plants, i.e., among spikelets of the same plant. These results seem to open the possibility for cytological selection of plants with low multivalent frequency and in this way to obtain a completely diploidized tetraploid population. This work is in process in our laboratory.
T. Angel Kato Y.
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