Overcoming Cross-Incompatibility among some Mexican Diploid Species of Solanum

@article{Swaminathan1955OvercomingCA,
  title={Overcoming Cross-Incompatibility among some Mexican Diploid Species of Solanum},
  author={M. S. Swaminathan},
  journal={Nature},
  year={1955},
  volume={176},
  pages={887-888}
}
SPECIES of Solanum belonging to the section Tuberarium and occurring in Mexico have long been of interest to potato breeders, as several of them possess resistance to the late-blight caused by Phytophthora infestans de Bary. Like the tuberbearing species of Solanum found in South America, the Mexican species also form a polyploid series comprising diploids (2n = 24), triploids (2n = 36), tetra-ploids (2n = 48), pentaploids (2n= 60) and hexa-ploids (2n = 72). These species have been classified… 

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