Articles

INTERSPECIFIC CROSSES IN TULIP BREEDING

Article number
177_97
Pages
590 – 590
Language
Abstract
At the IVT interspecific crosses are carried out to determine the possibilities of broadening the variation in flower colour, flower shape and plant height and to determine the relationship between species.

For the breeding for resistance to Fusarium oxysporum, species and interspecific hybrids have been tested and crosses with the resistant ones were made.
For the breeding on resistance to mosaic virus (TBV) a test method is being developed.

Some species and their hybrids showed a high level of resistance.
There are prospects that mosaic resistant forcing tulips may be obtained.

To save energy, species and hybrids were tested for cold requirement and forcing period.
Tulipa praecox requires a relatively short cold and forcing period and is therefore considered for interspecific crosses.
However, it is triploid and practically sterile and therefore pre-breeding with related species is being studied.
Research on pollen growth and embryoculture can help here to break breeding barriers.

Tetraploid tulips can keep longer than diploids.
Therefore, tetraploids were made by laughing gas treatment in crosses including T. gesneriana and T. fosteriana.

Publication
Authors
J.P. van Eijk, W. Eikelboom, J.B.M. Custers, J. Franken, L.W.D. van Raamsdonk
Keywords
Full text
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