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Estimating Out‐Crossing Rates in Spring Wheat Cultivars Using the Contact Method
Author(s) -
Lawrie R. G.,
MatusCádiz M. A.,
Hucl P.
Publication year - 2006
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2005.04-0021
Subject(s) - cultivar , biology , spring (device) , agronomy , greenhouse , poaceae , seeding , horticulture , aleurone , botany , mechanical engineering , endosperm , engineering
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.