92 - BULLETIN 754, U. S. DEPARTMENT OF AGRICULTURE. 
pected on theory, as all of the correlations obtained could be re- 
ferred to some of the expected degrees of association. 
The first ear shown in Table XLIV, No. 1856, has an exact recip- 
rocal in ear No. 1877, and the self-pollinated colored horny parent 
is ear No. 1878, both of the same table. All three of these ears show 
practically no correlation, and the Mendelian ratios approximate 
the expected. proportions. This group can be said to fulfill the ex- 
pected results where either circles 4, 7, 12, 15 are crossed with circle 
8, or where circles 4 or 7 are crossed with circle 16 (Table XLIT). 
The second group.-consists of ear No. 1860, its exact reciprocal ear 
No. 1874, together with the self-pollinated colored horny parent ear 
No. 1875 (Table XLIV). 
TABLE XLIV.—Correlation between the endosperm texture and the aleurone 
color of 12 ears of maize, bhe progeny of the cross Dh 330. 
COLORED WAXY X COLORED HORNY. 
Pedigree No. of— mt 
Number of seeds. A . Rereeiiaes 
Self-pollinated. a = E 
Progeny ear. e s g o 
on ic} o 
aS Se 
® SS Ray B ° S 3 
Py ice las, lec loee ee ele 
1 2 3 4 5 6 7 8 9 10 11 12 13 
TSO6 Soe aeee UY ieee aaellocsecraoon A Siideecee 525 69 74 | 170} 212 | 0.075 10.067 | 45.6 | 25.4 
1860 Nee caer: IS 75 ace oe | eee mens eyes ese 649 | 119 45 | 170] 315] .653] .039 | 44.6} 25.3 
SGUe Se sa INIOH EWE Saal Bos were oS Gy Ale ees 450 51 58 | 153] 188] .034] .074 | 45.4] 24.2 
lee eSseauses Bae GOressecleeaeaeeace None....| 679 72} 102} 234) 271 |—.114]} .059 | 45.0} 25.6 
ES60 5S ace S75 Se veinnleG Se toerseel ae do....| 739] 143 38 | 237) 321] .670]| .081 | 51.4] 24.5 
COLORED HORNY X COLORED WAXY. 
1S7 eee | All waxy..| None....| 1861..... 81 10 11 23 37 | 0.188 [0.053 | 40.6 | 25.9 
ISG ee as eae ae STORE ees AS6OE S322 137 25 16 46 50} .259 | .120} 51.8} 29.9 
ILY(seeoopece INOne2 2-5. None....| None....| 377 86 36 | 115] 140] .491 | .064} 53.4] 32.4 
CVA (heseasenc All waxy..| 1878..... TS56seee2 424 51 50 | 175] 148 |—.074 | .076 | 53.3 | 23.9 
COLORED HoRNy X SELF. 
ISTE SORA BASS | Sa taseaaebs aes 8 Sinaia, Bee 716 | 104} 194 47 | 371 | 0.605 |0.042 | 21.1] 41.6 
TRS fie Spee Caeser ONES Soul SEAS eae Ee eee er 496 32} 104 90 | 270 |—.040 |} .080 | 24.6] 27.4 
ISP Baca booallead Os Has SA See a aosis Merescmsnae 136 19 42 9 66 | .588 | .077 | 20.6 | 44.8 
Since the self-pollinated ear from the colored horny parent of the 
above reciprocals had approximately 9 colored to 7 white seeds with 
a correlation of 0.605 between C’ and H, it could have come only from 
circle 15 (Table XL). The expected correlation upon self-polli- 
nating circle 15 is 0.570, of which 0.605+.0.04 can reasonably be con- 
sidered an approximation. 
