Summary
In this third paper results are given regarding the resistance in adult bulbs of progenies from the incomplete diallel cross of cultivars described in paper 2.
It appeared that the resistance in adult bulbs corresponded with the resistance found earlier in juvenile bulbs. Both for juvenile and adult progenies, resistance proved to be mainly determined by additive gene action; GCA's of individual parents of the adult progenies showed good agreement with those found for juvenile ones, indicating that early selection for Fusarium resistance is very effective.
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References
Eijk, J. P.van & J. Leegwater, 1975. Criteria for early selection in tulip breeding. Acta Horticulturae 47: 179–186.
Eijk, J. P.van, B. H. H. Bergman & W. Eikelboom, 1978. Breeding for resistance to Fusarium oxysporum f.sp. tulipae in tulip (Tulipa L.). 1. Development of a screening test for selection. Euphytica 27: 255–261.
Eijk, J. P.van, Frida Garretsen & W. Eikelboom, 1979. Breeding for resistance to Fusarium oxysporum f.sp. tulipae in tulip (Tulipa L.). 2. Phenotypic and genotypic evaluation of cultivars. Euphytica 28: 67–71.
Garretsen, Frida & M. Keuls, 1978. A general method for the analysis of genetic variation in complete and incomplete diallels and North Carolina II designs. Part. II. Procedures and general formulas for the fixed model. Euphytica 27: 49–68.
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Van Eijk, J.P., Eikelboom, W. Breeding for resistance to Fusarium oxysporum F. SP. Tulipae in tulip (Tulipa L.). 3. genotypic evaluation of cultivars and effectiveness of pre-selection. Euphytica 32, 505–510 (1983). https://doi.org/10.1007/BF00021462
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DOI: https://doi.org/10.1007/BF00021462