26 BULLETIN 754, U. S. DEPARTMENT OF AGRICULTURE. > 
centage of waxy seeds on ears that result from crossing homozy- 
gous waxy plants with heterozygous horny plants. 
These 14 ears are shown in Table XIII. Column 1 of the table 
gives the pedigree numbers of the ears borne on the homozygous 
waxy plants pollinated by heterozygous horny plants. Column 2 
gives the percentage of waxy seeds observed on these cars. Column 
3 gives the pedigree number of the reciprocal ears of those shown in 
column 1. The ears shown in column 3 were borne on heterozygous. 
horny plants, the result of pollen from homozygous waxy plants. 
Column 4 gives the percentages of waxy seeds on the ears shown 
in column 8. Column 5 gives the difference in percentage of waxy 
seeds between the reciprocal ears. A minus sign is used in this 
column to indicate the ears that had a higher percentage of waxy 
seeds when the male parent was heterozygous horny than when the 
male parent was heterozygous waxy. Column 6 gives the number of 
times the difference observed exceeds the probable error. Column 
7 gives the pedigree number of the ears which resulted from self- 
pollinating the heterozygous horny plants which bore the ears shown 
in column 38. Column 8 gives the percentage of waxy seeds observed 
on the ears shown in column 7, and column 9 shows the percentage 
of waxy seeds expected from the gamete classes of the parents in 
columns 2 and 4. Column 10 gives the number of times the deviation 
of the percentages in column 8 from the expected 25 per cent exceeds 
the probable error. 
7 
TasreE XIII1.—IJnheritance of endosperm texture in 14 ears of maize. the 
reciprocal crosses between homozygous wary and heterozygous horny plants. 
Waxy X horny. Horny X waxy. Horny X self. 
Percentage 
Per- = Per- : of waxy 
Pedi- . . Pedi- 
E = cent- cent- } Difference in ; : 
Pedigree No. age of tg ace of | reciprocal. D+E. eee D+E., 
waxy. | ~ a waxy ~*~" | Obser-| Ex- 
ved. | pected 
1 2 3 + 9 10 
EGS LSE a aaa em ta eset 44.8 1643 51.4 6.6+42.1 5 23.1 0.42 
1 5G5 Wo. SES oo. cS Se 49.1 1632 30.0 943.7 -9 24.5 .19 
BY PA ae ee ae 41.7 1604 51.4 9.743.9 =| 21.5 1,97 
LUG / eh = Le ae ee eee a 48.8 1617 52.6 3.84:2.2 .0 25.6 3.41 
19D ceed head oes 50.2 1619 50.0} — .2+2.1 mil 25.1 - 68 
PROZ Reco Soe aoe se el | 60. 8 1621 54.9| —5.942.3 5 33.4 1.44 
TRE ee eee ee eee | 49.4 1611 52.6 3.21.8 J 26.0 4.40 
UC rl lS ee ak Soe ee 50.9 1686 53.5 2.6+2.4 6 27.2 57 
RG se eee ene SS 45.6 1877 53.3 7.7+2.2 .6 24.3 - 60 
if Ree es eee 44.6 1874 51.8 7.243, 2 .4 23. 2 3.00 
re De 45.6 1920 45.4} — .242.5 6 21.0 50 
NO ee ee eh ee 45.6 1917 55. 3 9.7+2.0 -0 25.2 1.16 
1O0G A ee ee e 50. 2 1922 49.4 842.5 er 24.8 3.41 
BAL | Se Fe Sa ge 44.7 1924 50. 6 5.942.2 S24) 22-6 Bs) 
Total........-.--| as gt bitte | Seis aaa a et en 
Total 9 excess...| 48.0 |...----- | 52.4 4.44.73 6 25.2 1.38 
Total ¢ excess... 50! Gree | 49.4 i SE es] 0 25.0 | 2. 69 
