RECORD: Darwin, C. R. n.d. Ipomœa very little sterile with own pollen. CUL-DAR69.B29. Edited by John van Wyhe (The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 4.2023. 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-DAR69 contains material for new editions of some of Darwin's books: supplemental note for Descent (2d ed. 1877), French trans. of 5th & 6th eds. of Origin; Coral reefs (2d ed. 1874); Coral reefs (3d ed. 1889); Climbing plants (2d ed. 1875); and Cross and self fertilisation (2d ed. 1878).
Ipomœa the self-fertilised very little sterile with own pollen, & yet great difference between the self-fert & crossed in the 1st generation: ie 100 : 76
[in margin:] On account of Henslows foolish criticism.
Mimulus crossed to self of f. grains 100 : 77 yet self flower fertilised with own pollen highly fertile
Digitalis produces an abundance of seeds when artificially self-fert
Brassica Same conclusion in weight
p. 121 seedlings from crossed flowers a semi-self-sterile Reseda profited less by the cross, relatively to the self-fertilise crossed from a fully self-fertile plant.
So with Escholtzia
(Nor can the result be attributed to some correlation between the long efficacy of own pollen
(z)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 27 August, 2023