ISHS Acta Horticulturae 673: IX International Symposium on Flower Bulbs
LEVEL OF RESISTANCE TO FUSARIUM OXYSPORUM F. SP. LILII (FOL 4 AND 11) USING ENDOGENOUS ANTIFUNGAL SUBSTANCES EXTRACTED FROM BULBS AND/OR ROOTS IN LILIUM GENUS |
| Authors: | J.H. Lim, S.T. Choi, H.K. Rhee, H.R. Cho, H.Y. Joung |
| Keywords: | Fusarium oxysporum, lily, breeding, disease resistance, endogenous antifungal substances |
| Abstract:
In the bioassay by endogenous antifungal substances among 147 genotypes, Fol 4 strain was more sensitive to antifungal effect of the substances than Fol 11 strain. The root extracts showed higher antifungal effects than the bulb extracts. Twenty-two Asiatic hybrids including ‘Monte Negro’, 17 Oriental hybrids including ‘Sartre’ and LA hybrid ‘Abba’ were selected as breeding parents by antifungal activity tests with the endogenous substances. Those occupied 60% of Asiatic hybrids, 30% of Oriental hybrids and 5% of L. longiflorum and its hybrid among the total genotypes tested. For the breeding of LA and LO hybrids resistant to Fusarium oxysporum f. sp. lilii, L. formolongi (female) and Asiatic hybrid (male) were crossed and eight F1 hybrids were selected, and then, a screening test for resistance to Fusarium oxysporum by endogenous antifungal substances was carried out. ‘Hae-wool’, ‘Sinavro’ and LA 96-16 were classified as highly resistant cultivars and ‘Supia’ and ‘Doran’ as moderately resistant ones to Fusarium bulb-rot disease. In case of moderately resistant or susceptible female, resistant or moderately resistant F1 hybrids could be obtained by using a resistant male. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
