Evidence of natural hybridization between Aegilops geniculata and wheat under field conditions in Central Spain

This study deals with hybrids between Aegilops geniculata and bread wheat, Triticum aestivum L., detected in two Ae. geniculata populations in the “Meseta Central”, Spain’s central plateau where wheat is a major crop. Morphological traits and pentaploid chromosome numbers were used to identify hybri...

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Bibliographic Details
Published in:Environmental biosafety research 2006-04, Vol.5 (2), p.105-109
Main Authors: Loureiro, Iñigo, Escorial, María Concepción, García-Baudín, José María, Chueca, María Cristina
Format: Article
Language:English
Subjects:
Aegilops geniculata
Biosafety
Cereals
Chromosomes
Chromosomes, Plant
crop-wild hybrids
Crops
cultivation
Goat grass
Hybridization
hybridization rate
Hybridization, Genetic
hybrids
Plant Infertility - genetics
Plants, Genetically Modified - physiology
plateaus
Poaceae - anatomy & histology
Poaceae - genetics
Poaceae - physiology
pollen flow
Population
Q1
Q2
Q3
Risk Factors
Seeds
Spain
Triticum - anatomy & histology
Triticum - genetics
Triticum - physiology
Triticum aestivum
wheat
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Summary:This study deals with hybrids between Aegilops geniculata and bread wheat, Triticum aestivum L., detected in two Ae. geniculata populations in the “Meseta Central”, Spain’s central plateau where wheat is a major crop. Morphological traits and pentaploid chromosome numbers were used to identify hybrids in 2004 and 2005. The frequency of hybridization under natural conditions was calculated for one of these populations. Six hybrids were detected from a sample of 3158 seeds from this population. The hybrids were mainly sterile but seed set can be found. This study extends the range of documented hybridization to include central Spain. The potential risks associated with natural hybridization in the context of transgenic wheat cultivation are discussed.
ISSN:1635-7922
1635-7930
DOI:10.1051/ebr:2006020