EAST: INTERCROSSES BETWEEN SELF-STERILE PLANTS 151 
interesting to note that the plants of both cross No. 2 and cross No. 3 
fell into the three groups as if they were samples of the same popula- 
tion. There were 40 plants of Cross No. I, and 13 plants of the 
TABLE: It 
PLANTS OF F; GENERATION OF RECIPROCAL CROSS BETWEEN JN. forgetiana AND N. 
alata, GROUPED IN ACCORDANCE WITH THEIR BEHAVIOR IN INTERCROSSES 
Plants 0-39 are products of the cross; plants 40-52 are products of its reciprocal 
. . Cases Fertile in Group Cases Sterile in Group 
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