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Hybridisation experiments with protoplasts from chlorophyll-deficient mutants of some Solanaceous species

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Abstract

Following fusion between protoplasts from two different chlorophyll-deficient diploid mutants of Datura innoxia Mill. it was possible to select 33 green hybrid calli on agar culture medium. Half of the somatic hybrids gave rise to leaves and some to shoots. The chromosome number of 20 somatic hybrids was determined: five were tetraploid, eight hexaploid, three octoploid, and four showed an aneuploid chromosome number. After transfer of the shoots of the five tetraploid hybrids to soil they developed roots. In control experiments in which protoplasts of the two mutants were cultured either as a mixture without being treated with the fusion agent, or cultured separately, no green callus could be obtained. Similar experiments involving protoplasts from one chlorophyll-deficient mutant of Datura innoxia, on the one hand, and those from similar mutants of Nicotiana sylvestris Spegazz. et Comes and Petunia hybrida, on the other, yielded no green somatic hybrid although hybrid protoplasts could be detected.

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  1. Abt. Straub, Max-Planck-Institut für Züchtungsforschung, D-5000, Köln 30, Federal Republic of Germany

    O. Schieder

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  1. O. Schieder
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Schieder, O. Hybridisation experiments with protoplasts from chlorophyll-deficient mutants of some Solanaceous species. Planta 137, 253–257 (1977). https://doi.org/10.1007/BF00388159

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  • DOI: https://doi.org/10.1007/BF00388159

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