Development of a ploidy series from a single interspecific Trifolium repens L.Ā . nigrescens Viv. F1 hybrid

@article{Hussain1997DevelopmentOA,
  title={Development of a ploidy series from a single interspecific Trifolium repens L.Ā . nigrescens Viv. F1 hybrid},
  author={Syed Wajid Hussain and Warren M. Williams and Derek R. Woodfield and John G Hampton},
  journal={Theoretical and Applied Genetics},
  year={1997},
  volume={94},
  pages={821-831}
}
 The objective of the current research was to generate a ploidy series of backcross progenies from a single triploid (2n=3x=24) Trifolium repens×T. nigrescens F1 hybrid (3x H-6909-5). The 3x H-6909-5 plant was highly sterile and produced no seeds from approximately 3000 reciprocal backcrosses to both parental species. Chromosome doubling by an in vitro colchicine method resulted in a marked increase in fertility. Pollen stainability was increased from 9.9% in 3x H-6909-5 to an average of 89.2… CONTINUE READING

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