PLant Coxtors In Maize 95 
occurred in so nearly the expected relation of 9:3:4 that the observed 
deviations might be expected by chance considerably more than once in 
three trials, P equaling 0.37. The comparison follows: 
Color types Purple Sun red Green Total 
Ig Ilg IIlg, [Vg 
_lugeinealss = G8 See 293 105 150 548 
Brlemittedan 22... 6... ss 308 103 137 548 
_ JIGS CO eal a a5 +2 +13 0 
The F: greens of this cross are assumed to consist of the genotypes 
Ab PIR’ and Ab pl R’, which, if r’ had been present instead of R’, 
would have been dilute purples and dilute sun reds, respectively. In 
substantiation of this assumption, crosses of F,’s, all green-anthered 
purples, with dilute sun red, A 6 pl7r’, and with green VIc, ab plr’, are 
recorded in group 2 of table 41. As expected, the result was the four 
classes purple, sun red, dilute purple, and dilute sun red, all with colored 
anthers. The expected numerical equality of the four classes was so 
closely approached that deviations such as those observed might be 
expected by chance in nearly three out of four trials, P equaling 0.74. 
The comparison follows: - 
Dilute Dilute Total 
Color types ‘Purple Sun red aime. gun a 
la Ila Illa IVa 
| OSSIRVGS bo eee 58 61 62 70 251 
| LALGUOIB TEC lc ek ek eer 63 63 63 63 252 
Minicrences. se. 26s. se. —) —2 —l +7 —l 
Still another F; was crossed with a pink-anthered sun red, A B pl7’, 
and gave 68 purples and 67 sun reds, all with colored anthers, where 
equal numbers were expected. 
So far as tested, therefore, the cross of green-anthered purple with 
green [Vg has given the results expected on the basis of the hypothesis 
under test. 
Purple Ig x brown V.— A cross of green-anthered purple, A B Pl FR’, 
with brown, a B Pl 7’, gave in F, 49 purple-anthered purples, presumably 
4 
