ISHS Acta Horticulturae 430: VII International Symposium on Flowerbulbs
STUDIES ON GLADIOLUS RESISTANCE TO TRANSVERSE RUST |
| Authors: | G.M. Littlejohn, L.M. Blomerus |
| Keywords: | Uromyces transversalis, fungal leaf disease, disease resistance |
| Abstract:
Collections of plants were made from wild populations of Gladiolus tristis. The chromosome numbers were determined and the reaction to transverse rust. Diploid, resistant plants and diploid susceptible plants were used in a partial diallel in an attempt to determine the genetic basis of resistance to transverse rust. Analysis of the results from infecting the progeny from the crosses of the partial diallel did not indicate any clear segregation ratios of resistant versus susceptible. Indications were rather that resistance was not determined by a single or a few genes, but was a quantitative characteristic. These results were substantiated by those obtained from the infection of progeny from a partial diallel between resistant G. tristis plants and susceptible commercial cultivars. | |
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