تقييم الأداء وقوة الهجين وتقدير المعالم الوراثية في هجن الجيل الاول من الخيار الانثوي

Abstract

A field trial was conducted in spring season 2015 on cucumber in plastic house in Abu_Gharib region, to study combining ability and gene action in F1 hybrids of domestical evaluation cucumber. We put five lines in full diallel cross, then conducted the trial which included Geno types (lines and their hybrids) with the importer hybrid (saif) to comparison some vegetative and yield characters. Results showed that diallel hybrids 1x3 and 1x4 and reciprocal hybrid 4x1 were significant for rate of many characters like number of total female flowers, number of clusters per plant, stem diameter, number of fruits and yield per plant, the number of total female flowers was 99.48, 90.35 and 85.77 Sequentially, the number of fruits was 54.31, 48.00 and 42.87 Sequentially. The best general and specific combining ability between the lines 1,3 and 4 which their hybrids 1x3 and 1x4 give higher mean for yield of plant 4.28 and 3.84 Kg. plant-1 Sequentially, and they superior than the importer hybrid (saif). Gene action was nonadditive for characters like yield per plant , fruit set, number of fruits , number of flower clusters, for plant high rate was additive and non-additive type the gene action was additive and nonadditive type for characters of percentage plant height .the percentage of heritability was high for all characters .so we recommend to used them for local propagation to compensation some Iraqi need of seeds.