Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: PBR-119-520

[Submit comment/correction]

Reference	PBR-119-520
Title	Outcrossing rates of barley landraces from Syria
Journal	Plant Breeding
Year	2000
Volume	119
Pages	520-522
Author	Parzies HK Spoor W Ennos RA
Abstract	Summary: Diversity levels in populations of barley landraces may be influenced by varying levels of natural outcrossing caused by environmental conditions. Outcrossing was studied in 10 accessions of the barley landrace Arabi Aswad from different environments in Syria. Electrophoretic variation at two codominant isoenzymes (Est1 and Est2) in six seeds of 50 families per population were analysed and multilocus outcrossing rates calculated. Results were correlated with interpolated environmental conditions. Outcrossing was, on average, 1.7% and not significantly different from the outcrossing rate of wild barley. A significant increase of outcrossing was observed with increasing inter-annual variation in rainfall and decreasing minimum temperatures of the coldest month
Keyword	[ Hide all but 1 of 34 ] accessions air temperature alleles barley barley landrace codominant different environments diversity electrophoresis environment environmental environmental temperature enzyme polymorphism esterases family gene frequency genotype environment interaction heterogeneity Hordeum vulgare isoenzyme landrace loci outcrossing population rain rainfall seed syria temperature temporal variation variation wild wild barley winter

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.