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Sugar Tech

, Volume 2, Issue 1–2, pp 29–35 | Cite as

Mutational studies on sugarcane using gamma irradiation

  • E. H. Kwon-Ndung
  • O. P. Ifenkwe
Article

Abstract

The application of mutation breeding method was aimed at identification of mutants which possess positive agro-morphological and quality characteristics. In a series of studies between 1994 and 1998 using gamma irradiation for sugarcane, the dose sensitivity range of 4–8 kilograys (kgy) were identified for optimum germination of cane buds: The LD50 for cane buds was observed to lie between 30–50 kgy while complete lethality occurred at 70 kgy. The growth and quality traits of first generation of vegetative mutants (M1V2) tended to be reduced when gamma doses increased. This relationship which was inconsistent in M1V2 showed stabilized effects of these traits in M1V2. Artificial inoculation with smut spore were used to screen M1V3 mutants of three standard sugarcane clones of diverse origins. Eight selected mutants showing resistance to smut were identified. The significance of these clonal selections in breeding for smut resistance (which is the most important disease of sugarcane in Nigeria) have been discussed.

keywords

Gamma rays Irradiation Mutants Resistance Sugarcane Smut 

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Copyright information

© Society for Sugar Research & Promotion 2000

Authors and Affiliations

  • E. H. Kwon-Ndung
    • 1
  • O. P. Ifenkwe
    • 2
  1. 1.National Cereals Research Institute, Numan OutstationC/o Savannah Sugar Company NumanYolaNigeria
  2. 2.Cyto-Genetics & Plant Breeding Unit, The Department of BotanyUniversity of JosJosNigeria

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