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 38. 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 3. 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. 
Taste XIII.—IJnheritance of endosperm texture in 14 ears of maize. the 
reciprocal crosses between homozygous waxy and heterozygous horny plants.. 
Waxy X horny. Horny X waxy. Horny X self. 
Percentage 
Per- . Per- 5 of waxy 
Pedi- . . Pedi- 
: cent- cent- | Difference in és 5 
Pedigree No. age of No, age of | reciprocal. | D+=- Ro, D+E. 
waxy. * | waxy. * | Obser-| Ex- 
ved. | pected 
1 2 3 4 5 6 i 8 9 10 
44.8 1643 51.4 6.6+2.1 3.1 1644 25.5 2B) 0. 42 
49.1 1632 50.0 943.7 24 1633 24.5 24.5 19 
41.7 1604 51.4 9.7+3.9 2.48 1605 20.0 21.5 1.97 
48.8 1617 52.6 3.8+2.2 1:72 1618 32.0 25.6 3.41 
50. 2 1619 50.0 | —.2+2.1 | —.09 1620 24.1 Zone . 68 
60. 8 1621 54.9 | —5.94+2.3 | —2. 26 1622 28.5 33. 4 1.44 
49.4 1611 52.6 3.2+41.8 1.81 1612 31.1 26.0 4.40 
50.9 1686 53.5 2.6+2.4 1.07 1687 25.6 2.2 .o7 
45.6 1877 53:13 7.7+2.2 3.50 1878 24.6 24.3 . 60 
44.6 1874 51.8 7.24:3.2 2.29 1875 21.4 23. 2 3.00 
45.6 1920 45.4 — .242.5 | —.08 1921 25.6 21.0 -d0 
45.6 1917 55.3 9.7+2.0 4.86 1918 27.0 25. 2 1.16 
50. 2 1922 49.4 8+2.5 — .28 1923 30.8 24.8 3.41 
44.7 1924 50. 6 5.92.2 2. 63 1925 24.1 22.6 Ae 
4584 ii oS 51.5 2.74.61 4.44}... 25.5 Py. 1k iE? / 
Total 9 excess...| 48.0 |........ Bo! 4i| (yl ea eGo nee 25.6] 25.2| 1.38 
Total f excess...| 50.6 |....---- 49. 4 TP zea, Tl TROOU Sse em 27.0 25.0 2. 69 
