AI Article Synopsis
- The study analyzed the genetic structure of Hessian fly species M. destructor and M. hordei in Tunisia across 21 cereal fields in 14 localities, finding no strict link between cereal types and fly species.
- M. destructor exhibited no heterozygosity, while M. hordei demonstrated higher heterozygosity but significant deficits at certain loci in males, necessitating analysis of females for population structure.
- Both species showed low but significant genetic differentiation with similar gene flow rates, informing strategies for controlling Hessian flies using resistant wheat cultivars.
Article Abstract
Genetic structure of Hessian flies in Tunisia. The genetic structure of M. destructor and M. hordei was investigated by sampling 21 fields of cereals in 14 localities of central and southern Tunisia. As previously shown, there was no strict association between the cereal species (wheat, barley and oat) and the Mayetiola species. M. destructor males displayed no heterozygosity at the Pgm3 locus, indicating that they were hemizygous as is the PGM locus in North America. In M. hordei, heterozygous males were observed at all loci, but strong heterozygote deficits were found at two loci (Mdh2 et Hk). Since no such deficit was observed in females, the population structure of M. hordei was studied only in females. Although heterozygosity was two fold higher in M. hordei than in M. destructor, the two species were similar for other genetic characteristics, including a low (Fst<0.05) but significant (P<0.05) genetic differentiation, no isolation by distance, and similar rates of gene flow (5.7
Download full-text PDF
Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2706880 PMC http://dx.doi.org/10.1186/1297-9686-32-6-577 DOI Listing Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!