RECORD: Darwin, C. R. 1864.05.00-1864.06.13 Antirrhinum Peloric. CUL-DAR51.B20-B21. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2022. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.
[B20]
Antirrhinum Peloric var. Wonder. (May 64
Black thread by own pollenĀ |
White thread by pollen of common red Snap-dragon |
267 [illeg] of seed |
332 finest pod 157 |
I weighed seed from 3 finest pods = 1.04 gr. |
3 finest pods 0.92 gr |
from 6 finest pods including above = 1.83 gr The half of this is 0.915, so same weight as pods fertilised by common snap-dragon. |
6 flowers were thus fertilised & all produced capsules, but 3 of them were poor so that 1/2 well set. |
13 flowers were fertilised 8 produced capsules, of which one was poor, so 7/13 set well, rather above half |
|
[B20v]
One pod alone set without aid & under net & this produced few very poor seed.
This is a remarkable contrast to common snap dragon, of which the 2 lower anthers touch the stigma, & they self seed. After net removed the peloric set some pods. I suppose owing to visits of insects, & a seedling has come up in a pot. It is singular that the capsules of the peloric do not open by 3 sinuous doors like those of Common snap-d
[B21]
Judging by eye the capsules of common snap-d- naturally & artificially fertilized produced the same number of seed as when fertilized by Peloric. All or nearly all the flowers fertilized by Peloric pollen set capsules
Seed put in watch-glasses & carefully compared.
June 13' 64. The seedlings are coming up, a multitude from common Snap-d by pollen of peloric - & conversely from peloric by pollen, of common snap-d. But the seedlings from peloric by own pollen (not one flower) are all only about 1/3 of size of the seedlings from above other two crosses!!
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022