Hybridization between wheat (Triticum aestivum) and the wild species Aegilops geniculata and A. biuncialis under experimental field conditions

Hybridization between Aegilops geniculata, A. biuncialis and bread wheat Triticum aestivum has been evaluated during two seasons under simulated field conditions to estimate the field hybridization rate under Central Spain conditions. The mean frequencies of hybridization between A. biuncialis and A. geniculata with wheat were 0.34% and 0.31%, respectively. Data from 10 hybrid plants for each combination showed that hybrids can be partially fertile by backcrossing with wheat parent, with percent averages of 3.17 grains/spikelets for A. biuncialis × wheat hybrids and 2.87 grains/spikelets for A. geniculata × wheat hybrids. Self-pollination, although at very low rates, was also possible in hybrids. The potential risks associated with natural hybridization in the context of transgenic wheat cultivation are discussed. © 2006 Elsevier B.V. All rights reserved.

Bibliographic Details

Main Authors:	Loureiro Beldarrain, Iñigo, Escorial Bonet, María Concepción, García-Baudin, J. M., Chueca, M. C.
Format:	journal article biblioteca
Language:	English
Published:	Elsevier 2007
Subjects:	Aegilops spp., Wheat hybrids, Natural hybridization, Hybrid fertility, Gene transfer, Risk assessment,
Online Access:	http://hdl.handle.net/20.500.12792/2516 http://hdl.handle.net/10261/293350
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