African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6666

Full Length Research Paper

Response of some promising cane varieties under natural infections of sugarcane smut Sporisorium scitamineum in Ivory Coast

Didier Konan KOUAMÉ1*, Crépin Bi PÉNÉ2 and Michel ZOUZOU1
  1Laboratory of Plant Physiology, UFR Biosciences, University of Cocody (Abidjan, Ivory Coast), 22 BP 582 Abidjan 22, Ivory Coast. 2Direction of Research and Development, Sucaf-CI, 33 Rue des Brasseurs 01 BP 1967 Abidjan 01, Ivory Coast.
Email: [email protected]

  •  Accepted: 10 September 2012
  •  Published: 29 October 2012

Abstract

 

Sugarcane varieties namely, NCo376 and Co957 were the most cultivated up until 2008 on the sugar complexes of Ferké in Ivory Coast (15 and 30% of the cane fields). The cane yields under irrigated field were then lower than 80 t per ha; fault of having identified varieties more productive and resistant to the principal diseases like the sugarcane smut. In view of this, the resistance of 16 varieties to Sporisorium scitamineumwas evaluated under natural conditions of infection. The international scale of Hutchinson was used to classify the varieties. As results, varieties B47258, MY5465 and NCo376 were found to be most susceptible to the smut. The variability in smut reaction of NCo376 shows that different races of smut could be present in Ivory Coast. B51129, FR80674, FR80959, FR81254, FR81258, FR8183 and SP718355 showed intermediate resistance, but they do not have good agronomic performance. As for Co449, IAC58480, IAC64257, SP75184, R575, SP791230, SP701143 and SP711406, they were found to be highly resistant to the smut. Among them, SP711406 and SP701143 have the best agronomic performances and could replace most susceptible such as NCo376, Co957, Co997 and Co997Z. In 2012, SP701143 and SP711406 are in full rise (26 and 16% of the sugarcane fields in northern Ivory Coast).

 

Key words: Sugarcane, varieties, smut disease, susceptible, resistance, Ivory Coast.