But in the autumn all the plants were so equal that it
did not seem worth while to measure them. In two of the pots they were
absolutely equal; in a third, if there was any difference, it was in
favour of the crossed plants, and in a somewhat plainer manner in the
fourth pot. But neither side had any substantial advantage over the
other; so that in height they may be said to be as 100 to 100.
19. DIPSACEAE.--Scabiosa atro-purpurea.
The flowers, which are proterandrous, were fertilised during the
unfavourable season of 1867, so that I got few seeds, especially from
the self-fertilised heads, which were extremely sterile. The crossed and
self-fertilised plants raised from these seeds were measured before they
were in full flower, as in Table 5/65.
TABLE 5/65. Scabiosa atro-purpurea.
Heights of plants measured in inches.
Column 1: Number (Name) of Pot.
Column 2: Crossed Plants.
Column 3: Self-fertilised Plants.
Pot 1 : 14 : 20.
Pot 2 : 15 : 14 4/8.
Pot 3 : 21 : 14.
Pot 3 : 18 4/8 : 13.
Total : 68.5 : 61.5.
The four crossed plants averaged 17.12, and the four self-fertilised
15.37 inches in height; or as 100 to 90. One of the self-fertilised
plants in Pot 3 was killed by an accident, and its fellow pulled up; so
that when they were again measured to the summits of their flowers,
there were only three on each side; the crossed now averaged in height
32.
Pages:
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266