The Origin of the Cultivated Cucurbita

  title={The Origin of the Cultivated Cucurbita},
  author={Thomas W. Whitaker},
  journal={The American Naturalist},
  pages={171 - 176}
  • T. Whitaker
  • Published 1 May 1956
  • Biology
  • The American Naturalist
The five cultivated species of Cucurbita (C. pepo, C. mixta, C. moscbata, C. ficifolia and C. maxima) are very much alike in their morphological characteristics, but they are for the most part cross-incompatible. They have apparently developed a sequence of sterility barriers that effectively prevent gene flow between them. In a series of interspecific matings, the five cultivated species are shown to be cross-compatible with a wild species, C. lundelliana, from southern Mexico and neighboring… 

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