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Euphytica

, Volume 109, Issue 1, pp 51–67 | Cite as

Crossability between cultivated and wild tuber-and non-tuber-bearing Solanums

  • S.A. Jackson
  • R.E. HannemanJr.
Article

Abstract

The cultivated potato has over 200 extant wild relatives many of which contain genes valuable for disease resistance, hardiness, processing and agronomic traits. Crossability of these wild species directly with the cultivated potato is complicated by several reproductive phenomena such as stylar and ploidy barriers and Endosperm Balance Numbers (EBN). However, a systematic analysis of crossability with many of these wild relatives has never fully been examined. Reciprocal crosses were made between cultivated potato and over 400 wild potato accessions; stylar barriers and 2n gamete production were examined as was the fertility of many of the putative hybrids. Generally, the seed/fruit ratio increased the more closely related the species were to the cultivated potato. However, a few crosses were successful in spite of predicted failure due to ploidy or EBN differences.

Solanum crossability 2n gametes hybridization wild species potato 

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Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • S.A. Jackson
    • 1
  • R.E. HannemanJr.
    • 2
  1. 1.United States Department of Agriculture, Agricultural Research Service and the Wisconsin Agricultural Experiment StationCooperative investigation of the Vegetable Crops Research UnitUS
  2. 2.Department of Horticulture, University of WisconsinUSDA, Agricultural Research ServiceMadisonU.S.A

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