RECORD: Darwin, C. R. 1878.09.18. Celery / Draft of Cross and self fertilisation. CUL-DAR209.7.37. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2022. 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-DAR209.7-8 contain notes on heliotropism (phototropism) for Darwin's book Movement in plants (1880).


[37]

Celery Heliotropism Sept. 18' S.W. window — Very Cloudy day — Rain

Left (a little bowed from light at start & turned about not true at first probably)

Right-Hand (Kept on all sides dark except front)

[data not transcribed]

[37v]

Ipomoea

in the proportion of ….. 100 to 93

Combining the total number of capsules produced by these plants and the average number of seeds in each the above crossed and self-fertilised plants yielded seeds in the proportion of ….. 100 to 64

Fifty-six spontaneously self-fertilised pods capsules on the above same five crossed plants, and twenty-five spontaneously self-fertilised pods capsules on the above same five self-fertilised plants yielded seeds

[Cross and self fertilisation, pp. 56-7: "First Generation of crossed and self-fertilised Plants growing in competition with one another.—Sixty-five capsules produced from flowers on five crossed plants fertilised by pollen from a distinct plant, and fifty-five capsules produced from flowers on five self-fertilised plants fertilised by their own pollen, contained seeds in the proportion of: 100 to 93.
Fifty-six spontaneously self-fertilised capsules on the above five crossed plants, and twenty-five spontaneously self-fertilised capsules on the above five self-fertilised plants, yielded seeds in the proportion of: 100 to 99.
Combining the total number of capsules produced by these plants, and the average number of seeds in each, the above crossed and self-fertilised plants yielded seeds in the proportion of: 100 to 64."]


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

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