Linkages of root characteristic from Pueblo maize II

In MNL 54:18-19 the senior author reported linkage of Su Asr1 as being p = 43.0 ± 2.2. From these experiments was isolated an su su Asr1 Asr1 line. This line was pollinated by Ga-S Su from the MGCSC. In our prior work the classes were those without any seminal root or those with one or more seminal roots, and there was a significant lack of individuals of the dominant class. In the results presented here, the classes are: zero or one seminal roots, and two or more seminal roots. In eight families, three were found by a chi-square test for homogeneity to be significantly different from the mean. They were discarded for the calculation of recombination because of excess or lack in Asr classes. We have no explanation for this variation.

The values of p obtained by maximum likelihood were: Asr1 ga 16.0 ± 2.7, Ga-S Su 31.0 ± 2.0 and Asr1 su 45.8 ± 2.2. Within limits of experimental error they agree quite well among them and with values already reported elsewhere.


Luiz Torres de Miranda, Luiz Eugenio Coelho de Miranda and Eduardo Sawazaki

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