424 SEMI-CENTENNIAL OF TORREY BOTANICAL CLUB 
were all above 20 (see TABLE 42) and the range had shifted to 
decidedly higher values than had previously appeared. One 
plant gave a rather low value of a, 16.9. The complete sterility 
of all but one of these plants prohibited the study of selection for 
high or low values in uniparental offspring. The very prevalent 
cross-incompatibility also limited the possibility of testing such 
selection in biparental heredity. However, crosses were made 
from which six different progenies were grown in 1016. 
TABLE 42 
DISTRIBUTION OF VALUES OF FLOWER NUMBER OF FIRST DAY OF BLOOM (а) FOR THE VARIETY RED- 
AVED TREVISO. DATA FOR I9I3, 1014, 1015, AND 1016 
и (5 n 
Distribution of values of a | oa ri 
Е 5.5 verage г 2 of 
Series m Om ALIE SUN ROT ate | | ey a of ies parents 
w| 9| 5| oj ^| омо м of шо! v ol vl ol el el wl ol 38 series 
F R R tad tad S E A cd Oca S g ИНЕНІ 
тоа. I I | 2| 18.5 = ae 
19.5 
юы. т 1 4 2 т 9| 198 0.07. 3 17.4 
1915 
19.5 
Ri,2,3 етттт|2 2 т..- || 9| 20.8 | 0.99] } 19.72 
19.8! 
Hav М I Кате S a l E E S ФОУ &IDOWS | 915 19.9 
19.8! 
Re. x. | 1|1|2/2/5|1,..|3 rz | z|r|r | 19 | 20.6 |-т.56 4 15.72 
I916 
R Һ-|3|.21.421|31....11|1|..1..!..|:2| 19.5 |-Е1.52| по data 
| 19.0 
ee А ыыт за т vies osha В |-&т.70 19.8 
| 21.73 
Жы... 1345213 2334 ров E зү 1&6 ^37 19.2, 
| 19.0 
Ко. т 2 2 ара кара о 190 |: 140]1 ове 
r.7* 
Жил... разреда 3 Байт т И 20.) 19.7 |: 1.6411 no дам 
| | 21.8% 
Ваг 216 3 |т 4 рер 1132] 20:8 | O77 13 25g 
A glance at the results recoreded in TABLE 42 shows that the 
ranges of values per plant and the averages for the different series 
are somewhat different. The lowest average of 18.4 + 1.79 seen 
in series 8 is lower than the average of the generations grown in 
the previous two years. The range is also lower. The immediate 
parents of this series were of lower than average rank, but the 
offspring average still lower. The highest average (20.8) seen in 
series 12 is the highest realized in any of the 1916 series and is 
