594 
Journal of Agricultural Research voi. xxvii, no. 
There are 21 significant correlations in a possible 29, and, without 
exception, these correlations indicate a tendency for the maizelike form 
of pistillate inflorescence to be associated in inheritance with other 
characters of maize. 
The high correlation of rank with the number of double female alicoles 
(0.654), rather than with alicole index, arouses the suspicion that size 
was largely the determining factor in arranging the spikes. However, the 
correlation of rank with length of spike is only 0.148, and the partial cor¬ 
relation of rank with the number of double female alicoles for constant 
length of spikes is 0.648 ±0.028. Mere size, therefore, could not have 
been an important factor in grading the ears. 
Aside from the correlations of the several characteristics of the in¬ 
florescences with rank, the correlations with season seem worthy of 
note. Thus, it is apparent that the maizelike form of inflorescence is 
found on the earlier plants, a condition to be expected from the inter¬ 
action of genetic factors. 
SUMMARY 
Several hybrids between normal maize and teosinte have been grown 
and, aside from variations in size, the first and second generations of such 
hybrids are very much alike. These generations are similar in inher¬ 
itance to the hybrid between Tom Thumb pop com and Florida teosinte, 
the inheritance of which has been reported previously. 
In view of the seemingly complete blending of characters of both 
parents in such hybrids, it became of interest to analyze the behavior 
of some of the more strictly Mendelian variations of maize in hybrids 
with teosinte. 
The present paper reports the inheritance of three striking Mendelian 
characters of maize, crinkly, ramose, and brachytic, in hybrids with the 
annual, teosinte, Euchlaena mexicana. As in hybrids with normal maize, 
all three variations are recessive in the hybrid with teosinte, and all three 
reappeared in the F 2 , the two former in the expected monohybrid per¬ 
centage of 25, but the last in only 12 per cent of the plants. 
With the crinkly variation none of the measures of this character 
showed a bimodal distribution, though it was possible to classify the 
plants arbitrarily into two groups on their general appearance. 
The several characteristics of the crinkly variation were found to be 
correlated among themselves, though in some cases the degree ot correla¬ 
tion was low. The crinkly type of plant, as classed in the field, was 
found to be associated with maize characters not involved in the change 
from normal to crinkly, such as the form of the pistillate inflorescence, 
etc. This behavior indicates that there are genetic correlations among 
the maize characters in hybrids with teosinte, as well as a correlation 
between these characters and the mutant type, crinkly. 
The classification of ramose plants in the F 2 of the hybrid with teosinte 
was accomplished without difficulty and, while variation obviously 
existed among the plants classed as ramose, this was not as pronounced 
as in the ramose-Gordo hybrid ( 12 ). The variability was visible chiefly 
in the tassels, the pistillate inflorescences seeming to be more uniform. 
Thus, no intermediate pistillate spikes were found, all the ramose spikes 
being branched along the entire axis. 
The teosintelike plants with ramose inflorescences, though apparently 
functioning normally with respect to the production of male gametes, 
were practically sterile with respect to the production of female gametes. 
