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The production of alien monosomic additions in beta vulgaris as a source for the introgression of resistance to beet root nematode heterodera schachtii from beta species of the section patellares



The production of alien monosomic additions in beta vulgaris as a source for the introgression of resistance to beet root nematode heterodera schachtii from beta species of the section patellares



Euphytica 31(2): 313-324



Experiments were carried out for adding the chromosome carrying resistance to beet root nematode (Heterodera schachtii) from the wild Beta sp. of the section Patellares (B. procumbens, B. webbiana and B. patellaris) to the genome of B. vulgaris. Preliminary experiments indicated that crosses between the wild species and B. vulgaris cv. of the mangold type yielded on average move viable F1 hybrids than crosses with sugar and fodderbeet. However, crossability varied strongly between individual parental combinations. It was concluded that most types of B. vulgaris can be hybridized with the wild species of the section Patellares if a sufficient number of pair-crosses is made. Crosses between diploid cultivars or species of the section Vulgares and diploid wild species of the section Patellares yielded many hybrids which, however, were highly sterile. From crosses between tetraploid B. vulgaris and the wild species a great number of viable allotriploid and allotetraploid hybrids was obtained. In the backcross progenies of allotriploid hybrids 26% alien monosomic additions occurred, of which 4.1% carried the resistance bearing chromosome of B. procumbens or B. patellaris. The programme will be continued by screening progenies of the resistant monosomic addition plants for the occurrence of resistant disomic introgression products.

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Accession: 006742159

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DOI: 10.1007/bf00021646


Related references

The production of alien monosomic additions in Beta vulgaris as a source for the introgression of resistance to beet root nematode (Heterodera schachtii) from Beta species of the section Patellares Chromosome carrying resistance. Euphytica 31(2): 313-323, 1982

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