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Transfer of germ plasm from the secondary to the primary gene pool in pennisetum

Theoretical and Applied Genetics volume 80, pages 200–204 (1990)Cite this article

Summary

Germ plasm from the A′-genome of Pennisetum purpureum Schum. (A′A′BB) of the secondary gene pool was transferred to cultivated pearl millet (AA) [P. glaucum (L.) R. Br.] by pollinating cytoplasmicnuclear male-sterile (cms) pearl millet with fertile allohexaploid pearl millet x P. purpureum hybrids (AAA′A′BB). Certain allohexaploids used as pollinators on cms pearl millet resulted in 14-chromosome diploid pearl millet progenies. Three types of diploid pearl millet plants were produced in addition to the expected 28-chromosome AAA′B-genome plants: (1) cms plants with only the A-genome, (2) cms plants with the A- and A′-genomes, and (3) fertile plants with the A- and A′-genomes. The latter group has allowed the utilization of genes for fertility restoration, stiff stalk, maturity, height, and morphological characteristics from the A′-genome of P. purpureum in the pearl millet breeding program. Production of monoploid gametes by the allohexaploids appeared to be genetically controlled.

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Affiliations

  1. University of Georgia, Coastal Plain Experiment Station, USDA-ARS, 31793, Tifton, GA, USA

    W. W. Hanna

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  1. W. W. Hanna
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Communicated by G. S. Khush

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Hanna, W.W. Transfer of germ plasm from the secondary to the primary gene pool in pennisetum. Theoret. Appl. Genetics 80, 200–204 (1990). https://doi.org/10.1007/BF00224387

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  • DOI: https://doi.org/10.1007/BF00224387

Key words

  • Pennisetum glaucum
  • Pennisetum purpureum
  • Pearl millet
  • Genome segregation
  • Germ plasm