Estimating Out-Crossing Rates in Spring Wheat Cultivars Using the Contact Method
- R. G. Lawrie,
- M. A. Matus-Cádiz and
- P. Hucl *
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% ; 8.6% ) and Wildcat (6.3% ; 4.2% ) displayed consistently elevated levels of OC.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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