INHERITANCE OF WAXY ENDOSPERM IN MAIZE. 83 
higher correlation was due to the weak growth of the pollen grains 
carrying the odd character combinations. If this be the case, it 
should also be observed on ear No. 1764, but not on ear No. 1799, as 
the male parent of this ear was making but one kind of pollen 
grains—white waxy. 
The grouping for ear No. 1764 is as follows: 
Number of seeds. 
Class. 
CH. CX. WH. Wx. 
TERED GT. bAceade pA SaaS ESR EASE So Soa SCE eR eRenCP Cds soo aesod 186.7 62.3 62.3 186.7 
EBSCEVCR ERE eee enn sae oS oe ee eek e Geneeaee ceded Ae 203 44 45 206 
These figures would certainly seem to indicate that the odd combi- 
nations (CX and WH were in some way at a disadvantage when com- 
pared with CH and WX. 
The grouping for ear No. 1799 is as follows: 
Number of seeds. 
Class, 
CH. CX WH. WX. 
WERPOCHEE = os. = Sees SR cls SRE nee eee aig eae 191.3 63.7] 63.7 191.3 
DSoIVedeen eee SoS 5 oso Scialae's se ante calinse’e - oie dices Ses oat ese 168 71 80 191 
The low correlation on this ear is obviously due to paucity of 
colored horny female gametes, a combination that would not be 
expected to be deficient. No question of the vigor of part of the 
pollen grains is concerned on this ear, since they were all alike. A 
shortage in the colored horny gametes was indicated on the self- 
pollinated ear (No. 1800), but not to the extent noted on ear No. 1799, 
while an increase was observed of the white waxy gametes on ear 
No. 1800, which was also found on ear 1764, but not in such an 
increased degree as would naturally be expected. 
Summing up the three ears, we find ear No. 1799 indicating that 
the female gametes were deficient in the colored horny combination, 
practically the expected proportion of white waxy gametes, and a 
slight excess of the two odd combinations. The male gametes, as in- 
dicated on ear No. 1764, were in excess in both the colored horny and 
white waxy combinations and deficient in the odd combinations. 
From these two ears we would expect the self-pollinated ear to be 
deficient in colored horny seeds, in excess in white waxy seeds. 
Using the zygotic ratios of the male and female parents as repre- 
senting the actual gametic ratios, we find the white waxy combina- 
tion in excess by 20 in the male gametes and equal in the female 
gametes; so we would expect an excess of about 20 in the self-polli- 
nated ear, and we find an excess of 21, 
