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This article in CS

  1. Vol. 46 No. 1, p. 247-249
    Received: Apr 20, 2005

    * Corresponding author(s): hucl@sask.usask.ca
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Estimating Out-Crossing Rates in Spring Wheat Cultivars Using the Contact Method

  1. R. G. Lawrie,
  2. M. A. Matus-Cádiz and
  3. P. Hucl *
  1. Dep. of Plant Sciences and Crop Development Centre, Univ. of Saskatchewan, 51 Campus Dr., Saskatoon, SK, Canada S7N 5A8


Wheat (Triticum aestivum L.) is a self-pollinated species with out-crossing (OC) rates assumed to be less than 1%. The objective of this study was to evaluate the OC rates for 35 Canadian spring wheat cultivars grown under greenhouse conditions. Recipient cultivars were crossed with Purendo-38, a blue aleurone wheat, using direct spike contact inside glassine bags. Four seeding dates were used in each of two greenhouse experiments (2001 and 2002). Out-crossing rates ranged from 0 to 2.8% (2001) and 0 to 3.5% (2002), with the exception of ‘Glenlea’ and ‘Wildcat’. Only Glenlea (10.6% [2001]; 8.6% [2002]) and Wildcat (6.3% [2001]; 4.2% [2002]) displayed consistently elevated levels of OC.

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