Claim · model-written summary
Lr39, Lr40 and Lr41 had effective seedling-stage resistance, with avirulence gene frequencies of more than 85%.
- Taxon
- Wheat
Triticum aestivumt0 - Organ / stage
- seedling stagee5
- Gene
- Lr39, Lr40, Lr41e5
- Outcome
- effective resistancee5
- Value
- more than 85%e5
- Qualifier
- frequencies of avirulence genese5
Not reportedMaterialCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Leaf Rust Resistance of Wheat in China”
e5“Lr39, Lr40, Lr41 had effective resistance at the seedling stage with the frequencies of avirulence genes at more than 85%”
Title
Studies on Utilization of Worldwide Known Genes for Leaf Rust Resistance of Wheat in China
Wan Chen Zhongguo nongye Kexue 2002
Other claims from this paper (13)
- Observation Lr9, Lr19, Lr24, Lr25, Lr28, Lr29, Lr38 and Lr42 expressed high resistance to Puccinia triticina in China at seedling and adult plant stages.
- Observation Lr12, Lr13 and Lr23 displayed adult plant resistance to Puccinia triticina but were susceptible at the seedling stage.
- Observation Lr34 and Lr35 showed slow rusting resistance, with a low final disease infection rating of less than 10%.
- Observation Lr3ka, Lr16, Lr17, Lr18, Lr39, Lr40, Lr41 and Lr43 had a high final disease infection rating (more than 40%) at the adult plant stage.
- Recommendation The genes Lr39, Lr40 and Lr41 could be considered effective resistance genes and used in the wheat improvement program in China.
- Observation The remaining Lr genes were ineffective against the Chinese P.triticina population at both seedling and adult plant stages and had no utilizable value in wheat breeding.
- Observation Of 43 tested Lr genes, 25 displayed stable or basically stable infection type across pathotypes and temperature ranges.
- Observation High temperature resistance was detected in 4 Lr genes.
- Observation Low temperature resistance was detected in 3 Lr genes.
- Observation Interactions among pathogen pathotype, wheat line and temperature (PHE) were detected for the other 11 Lr genes.
- Observation Infection types of the host-parasite interactions were not affected by temperature changes in the range of 5-30℃, except for Lr29.
- Observation Lr29 displayed temperature sensitivity, with high temperature susceptibility.
- Observation Resistance expression of some Lr genes differed among wheat with different genetic backgrounds.