RECORD: Darwin, C. R. 1878.03.12-14. Cytisus fragrans / Draft of Cross and self fertilisation, p. 32. CUL-DAR209.11.48. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 7.2023. 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-DAR209.11 contains material for Darwin's book Movement in plants (1880). Draft in the hand of Ebenezer Norman with corrections by Darwin. The text of the draft corresponds to Cross and self fertilisation, p. 32.
[48]
Cytisus fragrans — Apo-geotropism
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4.43 seeds. Thus the average number of seeds in the crossed capsules is to that in the self-fertilised capsules was 100 to 94. A hundred of the crossed seeds weighed 43.27 grains, whilst a hundred of the self-fertilised seeds weighed only 37.63 grains.
Many of these lighter self-fertilised seeds placed on damp sand germinated before the crossed; thus 36 of the former germinated whilst only 13 of the latter or crossed seeds germinated. In Pot I. the three clo crossed plants produced spontaneously under the net (excluding besides the 26 artificially cross-fertilised capsules) 77 self-fertilised capsules containing on an average 4.41 seeds; whilst the three self-
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 19 August, 2023