Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Resistance of sugarcane relatives injected with Ustilago scitaminea.

Abstract

Relatives of sugarcane (102 clones) were evaluated for resistance to U. scitaminea in 2 greenhouse experiments. Relatives included Erianthus spp. section Ripidium, Saccharum barberi, S. sinense, S. officinarum, S. robustum, S. spontaneum and sugarcane interspecific hybrids (cultivars). Clones of Erianthus spp. section Ripidium were the most resistant and clones of S. officinarum and S. robustum were the most susceptible of the 6 taxonomic groups included in the first experiment. Clones in the 2nd experiment, predominantly S. spontaneum from recent germplasm collection expeditions, were assigned to 1 of the 3 groups depending on their geographic origin. Clones from India, Indonesia and the Philippines had means of 1, 37 and 51% infection, respectively. It is proposed that exotic, smut-resistant clones will be crossed with elite clones to enhance smut resistance in Louisiana sugarcane germplasm.