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R. D. Williams
Articles written in Journal of Genetics
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Volume 27 Issue 2 May 1933 pp 341-362
Genetics of red clover (
Trifolium pratense L.), compatibility. IThe occurrence of intra-sterile inter-fertile classes has been demonstrated within red clover families derived from the mating of pairs of self-sterile individuals. As in
Nicotiana and other genera, self-and cross-incompatibility in red clover are controlled by an extensive series of at least seven sterility allelomorphs which render pollen bearing any one factor non-functional on a plant containing the same gene in its constitution, by reason of the inhibited growth of the pollen-tube. The existence of a non-inhibitory self-fertility allelomorph has also been shown. -
Volume 31 Issue 3 October 1935 pp 431-450
Genetics of flower colour in
Trifolium pratense L - I. Basic white colour (factor c)1. In red clover the basic dominant flower-colour factor (
C ) is a simple dominant to the pure white factor (c ).2. The basic recessive factor (
c ) is epistatic to all the other known flower-colour factors (with the exception ofCp gene), and to the anthocyanin factors.3. The factor pair
C/c is linked with the incompatible allelomorphsS 1, S1, S2, etc.4. The mean cross-over value for
S andC factors is about 35 per cent. -
Volume 37 Issue 3 May 1939 pp 441-458
Genetics of chlorophyll deficiencies in red clover (
Trifolium pratense L.) - I. Albinos -
Volume 37 Issue 3 May 1939 pp 459-482
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Volume 38 Issue 1-2 July 1939 pp 357-365
Genetics of cyanogenesis in white clover (
Trifolium repens )1. The presence and absence of cyanoglucoside in white clover are governed by a simple pair of factors which are designated
Ac andac .2. The cyanophoric character is completely, or almost completely, dominant to the acyanophoric.
3. The marked differences which occur between certain families, and in some cases between plants within the same families, in regard to their HCN content are probably due to modifying factors acting as intensifiers or diluents.
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Volume 48 Issue 1 April 1947 pp 51-68
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Volume 48 Issue 1 April 1947 pp 69-79
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Journal of Genetics
Volume 101, 2022
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