RECORD: Darwin, C. R. [1875-1876]. Draft of Cross and self fertilisation, folios 234 and 236. CUL-DAR65.20r-21r. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2023. 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. The volume CUL-DAR65 contains materials for Earthworms, notes, observations, proofs etc. 1880-1881.
Draft in the hand of Ebenezer Norman with corrections by Darwin. The text of the draft corresponds to Cross and self fertilisation, pp. 123 and 121-2.
236
[Top half only]
236
Reseda
the last case, in two adjoining rows in the open ground; and the eight tallest plants in each row were measured, with the following result.
Table 40 ─ (seedlings from a semi-self-sterile plant planted
Reseda odorata, growing in the open ground)
|
234
234
Reseda
my anticipation was quite wrong, (61) for they benefitted profited in a less degree. An analogous result followed in the case of Eschscholtzia, in which the offspring of the partially highly self-sterile plants of Brazilian parentage, which were partially self-sterile, did not profit more from a cross, than did the plants of the far more self-fertile English stock. The above two lots of crossed and self-fertilised seeds from the same plant of Reseda odorata, after germinating on sand, were planted on opposite sides of five pots, and measured as in the last case, with the following result:—
Table 39.
Reseda odorata, (seedling from a semi-self-sterile plant)
No. of Pot |
Crossed Plants |
Self-fertd Plants |
I
II
III |
33 4/8 30 6/8 29 6/8 20 22 33 4/8 31 2/8 32 4/8 30 1/8 32 1/8 31 4/8 32 2/8
|
31 28 13 3/8 32 21 6/8 26 6/8 25 2/8 30 4/8 17 2/8 29 6/8 24 6/8 34 2/8
|
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 11 October, 2023