The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. n.d. I have insisted on case of Petunia & Iberis in which self-fertile Plants. CUL-DAR76.B159. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. 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. The volumes CUL-DAR 76-79 contain material for Darwin's book Cross and self fertilisation (1876).

[159]

I have insisted on case of Petunia & Iberis in which self-fert Plant exceeded greatly the crossed plants, but not so when growing very crowded & at p. 329, there is somewhat analogous case with Nicotiana, in which self were to cross, as 100 to 178 & flowered first, whereas in crowded pot the crossed rather exceeded the self — & this experiment was repeated, with nearly the same result

(p. 329)

Give when I discuss effect of severe amputation — showing some sort of advantage in crossed

[159v]

A nearly analogous case was ~~case~~ observed twice over with the Plants of 1' gen of Nicotiana

Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)