The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1863.06.16-08.14. Cabbages / Marked with white thread. CUL-DAR76.B41. 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).

[41]

June 16th. 1863.—

Cabbages

Marked with white thread 6 fl of cabbage with lacinated leaves, of which anthers already open & probably own pollen on, & then I placed pollens of Barnes cabbage on & likewise own pollen on; & Bees were visiting flowers. — (To compare growth of uncrossed seedlings in same pod.—)

Aug 14th Now counted seed — these 6 pods contained on average 17.5 seed — Eight pods not touched from close above & below produced 16.1 seed; but this slight gain ~~not~~ hardly to be trusted.—

Eight pods of pure Barnes cabbage contained, on average, 19.6 seed

Good Effect of crossing (Dichogamy)

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