Mendel's principles of heredity : a defence / by W. Bateson ; with a translation of Mendel's original papers on hybridisation.

Date:
1902
Catalogue details

Licence: In copyright

Credit: Mendel's principles of heredity : a defence / by W. Bateson ; with a translation of Mendel's original papers on hybridisation. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    as a yellow-seeded variety. Tschermak*, however, de- scribes it as having gelbes, lifters gelblich-grunes Spekher- gewebe (cotyledons); and again says the cotyledon-colour is allerdings gerade bei Buchsbaum zur Spontanvariution nach gelb-grun neigend! The (!) is Tschermak's. There- fore Professor Weldon can hardly claim Buchsbaum as yellow-seeded without qualification. Buchsbaum in fact is in all probability a blend-form and certainly not a true, stable yellow. One of the green seeds mentioned above grew and gave 15 yellows and three greens, and the result showed pretty clearly, as Tschermak says, that there had been an accidental cross with a tall green. On another occasion Teleplwne ? (another impure green) x Buchsbaum gave four yellow smooth and two green wrinkled, but one [? both: the grammar is obscure] of the greens did not germinate!. (3 b) Telephone cases. Teleplione, crossed with at least one yellow variety {Auvergne) gave all or some green or greenish. These I have no doubt are good cases of defective dominance of yellow. But it must be noted that Telephone is an impure green. Nominally a green, it is as Professor Weldon has satisfied liimself, very irregular in colour, having many intermediates shading to pure yellow and many piebalds. It is the variety from which alone Professor Weldon made his colour-scale. / desire therefore to call special attention to the fact that Telephone, tliough * (36), p. 502 and (37), p. 663. t Professor Weldon should have alluded to this. Dead seeds have no bearing on these questions, seeing that their characters may be pathological. The same seeds are later described as icic Telephone selbst, so, apart from the possibility of death, they may also have been self-fertilised.