RESULTS OF ANALYSIS OF COLLECTION SAMPLES AND HYBRIDS F1 OF WINTER WHEAT FOR RESISTANCE TO LEAF RUST
Journal Title: Наукові доповіді НУБіП України - Year 2017, Vol 5, Issue 5
Abstract
In 2013-2016, 78 collectable samples of winter bread wheat were examined to identifying effective and stable sources of resistance to leaf rust and a degree of phenotypic dominance was identified in 39 first-generation hybrids based on resistance to this pathogen. On the artificial infectious background, sources of resistance to the pathogen of leaf rust (Puccinia triticina f.p. tritici Erikss) were identified: Beres (Hungary), IPS-520 (Bulgaria), Tudda 81 (Romania), MV-17 (Hungary), OK 91 P 605, HBE 0425-156, HBE 0140-119, HBE 0303-156, HBE 208-120, Tх91v4511, Tх92v4511, Rochy (USA), Zhitnytsia, Mironivska 30 and Khersonska ostista (Ukraine). It has been established that in the forest-steppe area of Ukraine, a high level of stability is protected by known effective genes: Arthur 71 (Lr9), McNair 2203 (Lr9), Flex (Lr19), Agrus (Lr19), Century (Lr24 + Lr42), TAM-200 (Lr24 + Lr43), Rendezvous (Lr37) and others. According to the results of the analysis of F1 hybrids with the use of resistant samples tо leaf rust, a different nature of the inheritance of this feature was established: overdomination was found in 10.3% hybrid combinations, partial positive dominance – 25.6%, intermediate inheritance – 51.3%, partial negative domination – 10.3% and depression – 2.5% of combinations. The overdominance, in combination with the best manifestation of the sign of resistance to leaf rust, is found in the combinations: НВЕ 0140-119/НВЕ 0303-156, НВЕ 0303 156/НВЕ 208-120, Тх91v4511/НВЕ 0140-119 and NEE 0140-119 / Mironіvska 65.
Authors and Affiliations
Yu. M. Dmytrenko
Keywords
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