RECORD: Darwin, C. R. 1864.07. Linaria vulgaris / Interbreeding. CUL-DAR79.174-175. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2023. 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 volumes CUL-DAR 76-79 contain material for Darwin's book Cross and self fertilisation (1876).


[174]

Linaria

[175]

July 1864 ) (Interbreeding

Linaria vulgaris. Linaria vulgaris. self & spontaneously fertilised under nets, were very sterile compared to plants outside— & I raised some seedlings of the two; under every condition similar in every respect.— The self-fert. plants, though not quite so thick in pot. & so better mounted were shorter— The 3 tallest plants here given — Of the naturally crossed plants, I took 3 tall ones by chance.

These latter certainly taller & not drawn up by being too crowded

(In Antirrhinum majus the peloric seedlings by own pollen conspicuously smaller, than peloric mother by common pollen; or than common Antirrhinum by peloric pollen.

[sketch] 3 self-fertilised self plants

[sketch] 3 naturally crossed Plants

Delphinium Consolida — seedlings from self & spontaneously fert flowers, of the same size as some seedlings from flowers crossed with pollen from other flowers, & I believe from other plants. — No difference. Hence no harm from interbreeding —


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

File last updated 31 May, 2023