Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-26T03:05:25.088Z Has data issue: false hasContentIssue false
  • English
  • Français

Further Studies on Leaf-curl of Cotton in the Sudan

Published online by Cambridge University Press:  10 July 2009

T. W. Kirkpatrick
T. W. Kirkpatrick
Affiliation:
Assistant Entomologist, Wellcome Tropical Research Laboratories.
Get access Rights & Permissions [Opens in a new window]

Extract

The reasons for adopting the name “ leaf-curl ” for the virus disease which is manifested by symptoms of “ leaf-crinkle ” on certain varieties of cotton, and by “ mosaic ” on certain others, are discussed.

A brief review is given of the very few references in previous literature which are relevant to leaf-curl.

Up to the end of February 1931, 168 straightforward attempts had been made to transmit crinkle from Sakel cotton to Sakel by means of white-flies (Bemisia gossypiperda, Misra & Lamba), of which no fewer than 157 were successful. No transmission was obtained with any other insects.

A single white-fly can transmit the disease to a healthy plant, though infection is less regularly obtained when one or only a few white-flies are used.

There is a large amount of negative evidence which indicates that the virus is not transmitted through the seed of Sakel cotton. There is also no evidence that it can be transmitted through the soil.

In nearly 200 controlled experiments, the incubation period of the virus in the plant varied from 8 to 34 days, but over two-thirds of the recorded periods were between 11 and 19 days. Possible causes of the variation in the incubation period are discussed.

Little is known with certainty about the factors which influence the severity of the disease.

At least one case of complete recovery from the disease appears to have been observed. Partial recovery is not infrequent.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 22 , Issue 3 , September 1931 , pp. 323 - 363
Copyright
Copyright © Cambridge University Press 1931

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

(1)Aulmann, G.Fauna der deutschen Kolonien, v, 4, pp. 138–140, 1912.Google Scholar
(2)Bewley, W. F.Eighth Ann. Rept. Cheshunt Exp. and Res. Stat. Herts, pp. 34–45, 1922.Google Scholar
(3)Blattny, C.Mosaica Konvalinky. (Abstract in Review of Applied Mycology, viii, p. 589, 1929.)Google Scholar
(4)Farquharson, C. O.Reports of the Mycologist.—Ann. Rept. Agric. Dept. Nigeria, 1912 & 1913.Google Scholar
(5)Golding, F. D.A vector of leaf curl of cotton in Southern Nigeria.—Empire Cotton Growing Review, vii, 2, pp. 120–126, 1930.Google Scholar
(6)Jones, G. H. & Mason, T. G.On two obscure diseases of cotton.—Annals of Botany, xl, no. clx, 1926.Google Scholar
(7)Kirkpatrick, T. W.Preliminary note on leaf-crinkle of cotton in the Gezira area, Sudan.—Bull. Ent. Res. xxi, pp. 127–137, 1930.CrossRefGoogle Scholar
(8)Massey, R. E. Sudan Agric. Research Reports, 1926–27, p. 136 (1928).Google Scholar
(9)Massey, R. E.Ann. Rept. Dept. Agric. & Forests, Sudan, 1929, pp. 72–81 (1930).Google Scholar
(10)Massey, R. E.A preliminary statement on leaf-curl disease of cotton, June, 1929.—Agric. Research Work in the Sudan, 1928–29, pp. 181–183 (1930).Google Scholar
(11)McKinney, H. H.Quantitative and purification methods in virus studies.—J. Agric. Res., xxxv, pp. 13–38, 1927.Google Scholar
(12)Misra, C. S. & Lamba, K. S.The Cotton White-fly.—Bull. No. 196, Agric. Res. Inst. Pusa, 1929.Google Scholar
(13)Moutia, A.Sur un des modes de transmission de la mosaïque du tabac. (Abstract in Rev. Appl. Mycol., viii, p. 73, 1929.)Google Scholar
(14)Paoli, G.Notizie sull' arricciamento del cotone nella Somalia Italiana.—Rassegna Economica delle Colonie, nn. 3–4, 1930.Google Scholar
(15)Parnell, F. R. Empire Cotton Growing Corporation ; Reports from Experiment Stations, 1925–1926, pp. 24–45.Google Scholar
(16)Salaman, R. N. Crinkle “ A,” an infectious disease of the potato.—Proc. Roy. Soc., London, B.cvi, pp. 50–83, 1930.Google Scholar
(17)Salaman, R. N. & Le Pelley, R. H. Para-crinkle : a potato disease of the virus group.—Proc. Roy. Soc., London, cvi, pp. 140–175, 1930.Google Scholar
(18)Smith, K. M.Observations on the insect carriers of mosaic disease of the Potato.—Ann. Appl. Biol., xiv, pp. 113–131, 1927.CrossRefGoogle Scholar
(19)Smith, K. M.Studies on potato virus diseases, IV.—Ann. Appl. Biol., xvi, no. 1, 1929.Google Scholar
(20)Smith, K. M.Insects in relation to potato virus diseases.—J. Min. Agric. xxxvii, no. 3, pp. 224–232, 1930.Google Scholar
(21)Smith, K. M.Studies on potato virus diseases, VIII.—Ann. Appl. Biol., xviii, no. 1, 1931.Google Scholar
(22)Wright, C. H. & Mason, T. G. Third Ann. Bull. Agric. Dept. Nigeria, pp. 32–40, 1924.Google Scholar
(23)Report of Seventh meeting of the London Supervisory Committee for the Co-ordination of Agricultural Research in the Sudan(24th September, 1930).Google Scholar