RECORD: Darwin, C. R. [1880]. Fig 66. [Pisum sativum] / Draft of Forms of flowers. CUL-DAR209.4.12. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 9.2022. 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 volume CUL-DAR209.4 contains materials for Darwin's book Movement in plants (1880).


[12]

(Fig 66.)

[Two sketches pinned to the page.]

[Movement in plants, p. 159: "Pisum sativum: deflection produced within 24 hours in the growth of vertically dependent radicles, by little squares of card affixed with shellac to one side of apex: A, bent at right angles; B, hooked."]

[12v]

(224

Ch. V. P. Illeg. veris

by itself could have added much to their vigour * (* For such petiole of this experiment, see my 'Effects of Cross & Self Fertilisation 1876' p. 220) When their illegitimate plants were transferred to fairly good soil out of door, they became during the two following years still more developed in stature & produced very few flower-stems; & although they must have been naturally legitimately fertilised by insects they yielded capsule, as compared with those produced by the surrounding legitimate plants, in the

[words excised] It is [words excised] certain [rest excised]

[Forms of flowers, p. 234: " These whilst still in the greenhouse produced smaller leaves and shorter flower-stalks than some legitimate plants with which they grew in competition; but it should be observed that the latter were the product of a cross with a fresh stock,—a circumstance which by itself would have added much to their vigour.* When these illegitimate plants were transferred to fairly good soil out of doors, they became during the two following years much more dwarfed in stature and produced very few flower-stems; and although they must have been legitimately fertilised by insects, they yielded capsules, compared with those produced by the surrounding legitimate plants, in the ratio only of 5 to 100!."]


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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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