ISHS Acta Horticulturae 325: VI International Symposium on Flower Bulbs
BREEDING OF NEW HIPPEASTRUM CULTIVARS USING DIPLOID SPECIES |
| Authors: | A.W. Meerow, T.K. Broschat, M. E. Kane |
| Keywords: | amaryllis, flower bulbs, interspecific hybridization, Hippeastrum papilio, H. brasilianum, H. reticulatum var. striatifolium |
| Abstract:
An amaryllis breeding program using diploid species not well represented in current commercial tetraploid cultivars has been underway since 1988. Objectives are to develop evergreen cultivars with attractive foliage and fragrant flowers of novel floral form and coloration. F1 progeny between Hippeastrum papilio and, respectively, H. lapacense, H. cardenasianum, and H. vittatum var. tweedianum were successfully produced, and selections made during their first and second flowering season (February through June, 1990 and 1991). All selections from the F1 generation are entirely evergreen, requiring no dormant period for flowering. Under Florida conditions, some repeat bloom in the autumn months. Forty-one second generation crosses (sibling, interhybrid and new primary hybrid crosses) have been established in a new field under 30% saran shade and first flowering is presently occurring. The progeny of one hundred and thirty-nine third year crosses are in production, consisting of additional sib and interhybrid crosses; new primary hybrid crosses with H. papilio, H. tucamanum, H. brasilianum, H. fragantissimum [these latter three all white, heavily fragrant, trumpet-flowered species], and H. reticulatum var. striatifolium. Complex crosses with selected Dutch cultivars and hybrids originating with Fred Meyer of California have also been generated. A third trial field is being developed in the coming year for these plants. At present, nearly 300 crosses have been completed. | |
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