R. L. Knight
Articles written in Journal of Genetics
Volume 38 Issue 1-2 July 1939 pp 133-159
Volume 41 Issue 2-3 January 1941 pp 391-409
Part II of this series gives a classification, based on blackarm resistance, of over 160 varieties and strains of cotton. Complete immunity was not found in any New World types but exists in some of the Old World species. Several of the results disagreed with statements by St Vincent workers, some of the strains classed as “somewhat resistant”, “highly resistant” and “immune” by them being found at Shambat to be fully susceptible. It is suggested that St Vincent results were based on differences in primary infection (seed infection), rather than on true tissue resistance and that these differences were accentuated by the presence or absence of seed fuzz and by plant vigour.
Part III shows the type of blackarm resistance inheritance obtaining in the crosses Uganda B. 31 × 514 and B. 31 × 513 (all three are American Upland types) the latter results being further clarified by crosses between 513 and Sakel.
Uganda B. 31 contains resistance factors
It is shown that 513, a selection from a Punjab American Upland importation with grade “5”–“6” resistance, contains factor
Volume 46 Issue 1 April 1944 pp 1-27
The genetics of blackarm resistance - IV.
Volume 47 Issue 1 July 1945 pp 76-86
The theory and application of the backcross technique in cotton breeding
Volume 48 Issue 1 April 1947 pp 43-50
The genetics of blackarm resistance - V. Dwarf-bunched and its relationship to B1
In the
The gene
The gene
Volume 48 Issue 3 January 1948 pp 359-369
A strong, partially dominant gene governing resistance to blackarm disease (
Three cytogenetically distinct techniques for transferring genes from Old World diploid to New World allopolyploid cottons are described and their relative merits discussed.
Volume 48 Issue 3 January 1948 pp 370-387
The role of major genes in the evolution of economic characters
Volume 49 Issue 2 October 1948 pp 109-116
The genetics of blackarm resistance - VII.
The immunity of Multani cotton (a variety of
Volume 50 Issue 1 June 1950 pp 36-58
Volume 50 Issue 1 June 1950 pp 67-76
The genetics of blackarm resistance - VIII.
Two forms of resistance occur in
Volume 50 Issue 1 June 1950 pp 100-111
Volume 50 Issue 3 February 1952 pp 392-395
The genetics of withering or deciduous bracteoles in cotton
The character Withering Bracteole in
At a low modifier level
Volume 51 Issue 1 July 1952 pp 47-66
The genetics of jassid resistance in cotton - I. The genes
It has been proved by workers elsewhere that hairs of sufficient length and density, on the undersides of cotton leaves, confer immunity to jassid. The resistance of Carpulla and Tanguis, two
The jassid resistance of MU 8
Resistance in Kapas Purao was found to depend on a gene phenotypically similar to
A hair density gene,
Volume 51 Issue 2 January 1953 pp 270-275
The genetics of blackarm resistance - IX. the gene B6m from
A blackarm resistance-intensifying gene, B6m, has been transferred from Gossypium arboreum to Sakel (G. barbadense). By itself, B6m confers no resistance, but in G. arboreum it is associated with, the gene B4.
The G. hirsutum resistance gene, B2, is stronger than B4 when both are transferred to Sakel background. For this reason the new gene B6m is being transferred to commercial synthetic blackarm-resistant Sudan Sakel and Upland (hirsutum) types carrying B2 and B3. In these combinations B6m confers in the Sudan a resistance closely approaching immunity, and this resistance appears to be retained under Uganda conditions.
Volume 51 Issue 3 July 1953 pp 515-519
The genetics op blackarm resistance - X. the gene
The blackarm resistance of the Upland variety Stoneville 20 is due to a major dominant gene,
Volume 51 Issue 3 July 1953 pp 582-585
The genetics of jassid resistance in cotton - II. pubescent T611
The gene controlling hairiness in the Upland variety Pubescent T611 has been transferred to Sakel and shown to be identical with the
Volume 52 Issue 1 January 1954 pp 186-198
Two Upland (
In addition to
Volume 52 Issue 1 January 1954 pp 199-207
A major hairiness gene was transferred from
Volume 52 Issue 2 May 1954 pp 466-472
The genetics of blackarm resistance - XI.
Resistance to blaokarm disease (
Volume 53 Issue 1 January 1955 pp 150-153
A major hairiness gene was transferred from tetraploid
Volume 56 Issue 2 May 1959 pp 261-280
R. L. Knight Elizabeth Keep J. B. Briggs
The resistance of Baumforth A to
Volume 58 Issue 3 December 1963 pp 328-346
Two partially dominant genes governing resistance to blackarm (
Volume 102, 2023
All articles
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode
© 2022-2023 Indian Academy of Sciences, Bengaluru.