Abstract
Introduction. The global climate change conduces spreading of main diseases of winter bread wheat (Triticum aestivum L.) and increases the yield losses caused by both these diseases and drought. Preventing the devastating impact of these factors on the yield depends on development of donors carrying the resistance genes. Aim. The diversity of new introgression wheat lines derived from complex interspecies crosses was evaluated for resistance to widespread diseases, drought and other agricultural traits. Methods. The trial was conducted consecutively during two vegetative periods (2018-2019 and 2019-2020) on the black earth area under the arid system in a control nursery design. Genetic material includes seventy-eight introgression wheat lines of different origin with two check cultivars for the arid climate zone of Ukraine. The data on nine agronomic (quantitative scores) and five plant pathological (point scores) traits were collected and subjected to both variance and correlation analysis to comprehend the contribution of the factors towards general diversity and connections between the characters. Results. Most lines were resistant to rust species due to the successful introgression of alien Lr, Yr and Sr genes from all sources involved in hybridization. High long-term resistance to stem rust was observed mainly among the derivatives of the collection sample H74/90-245 from Bulgaria, whose genetic background was favorable for generating a positive effect of 1BL.1RS translocation on both productive and adaptive traits in southern Ukraine and the ability to combine with other resistance genes. The yield traits did not correlate with the resistance to diseases except stem rust (Rsp = 0.34**) and Septoria blight (Rsp = −0.23*). Resistance to stem rust correlated with the grain and protein yield, test weight and flour density, which may be due to the presence of translocation 1BL.1RS. Negative correlation was observed between quality traits and grain yield, but quality traits mainly positively correlated with each other. The plant height had the highest contribution to grain yield followed by volume of 1000 kernels and WTK. Conclusions. The introgression lines were found to be diverse and potential for use in the wheat improvement programs for resistance to the diseases or drought in Southern Ukraine.
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Claims 11
Claim · model-written summary
Most introgression wheat lines were resistant to rust species owing to introgression of alien Lr, Yr and Sr genes.
- Taxon
- winter bread wheat
Triticum aestivume0 - Interactor
- rust speciese1pathogen
- Gene
- Lr, Yr and Sr genese1
- Outcome
- resistante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e1“Most lines were resistant to rust species due to the successful introgression of alien Lr, Yr and Sr genes from all sources involved in hybridization”
Claim · model-written summary
High long-term stem rust resistance was observed mainly among derivatives of the collection sample H74/90-245 from Bulgaria.
- Taxon
- winter bread wheatTriticum aestivume0
- Material
- derivatives of the collection sample H74/90-245e1
- Interactor
- stem ruste1pathogen
- Outcome
- long-term resistancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e1“High long-term resistance to stem rust was observed mainly among the derivatives of the collection sample H74/90-245 from Bulgaria”
Claim · model-written summary
The 1BL.1RS translocation had a positive effect on productive and adaptive traits in southern Ukraine.
- Taxon
- winter bread wheatTriticum aestivume0
- Gene
- 1BL.1RS translocatione3
- Outcome
- productive and adaptive traitse3
- Setting
- southern Ukrainee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e3“whose genetic background was favorable for generating a positive effect of 1BL.1RS translocation on both productive and adaptive traits in southern Ukraine”
Claim · model-written summary
Stem rust resistance correlated with grain and protein yield, possibly due to the 1BL.1RS translocation.
- Taxon
- winter bread wheatTriticum aestivume0
- Interactor
- stem ruste2pathogen
- Gene
- 1BL.1RSe2
- Outcome
- grain and protein yielde2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e2“Resistance to stem rust correlated with the grain and protein yield, test weight and flour density, which may be due to the presence of translocation 1BL.1RS”
Claim · model-written summary
Stem rust resistance correlated with yield traits (Rsp = 0.34).
- Taxon
- winter bread wheatTriticum aestivume0
- Interactor
- stem ruste3pathogen
- Outcome
- resistance to diseasese3
- Value
- 0.34e3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e3“The yield traits did not correlate with the resistance to diseases except stem rust (Rsp = 0.34**) and Septoria blight (Rsp = −0.23*)”
Claim · model-written summary
Septoria blight resistance correlated negatively with yield traits (Rsp = −0.23).
- Taxon
- winter bread wheatTriticum aestivume0
- Outcome
- Septoria blighte3
- Value
- −0.23*e3
SeptoriaNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e3“The yield traits did not correlate with the resistance to diseases except stem rust (Rsp = 0.34**) and Septoria blight (Rsp = −0.23*)”
Claim · model-written summary
Quality traits correlated negatively with grain yield.
- Taxon
- winter bread wheatTriticum aestivume0
- Outcome
- quality traitse4
- Comparator
- grain yielde4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e4“Negative correlation was observed between quality traits and grain yield”
Claim · model-written summary
Quality traits were mainly positively correlated with each other.
- Taxon
- winter bread wheatTriticum aestivume0
- Outcome
- quality traitse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e5“but quality traits mainly positively correlated with each other”
Claim · model-written summary
Plant height contributed most to grain yield, followed by 1000-kernel volume and WTK.
- Taxon
- winter bread wheatTriticum aestivume0
- Outcome
- contribution to grain yielde6
- Qualifier
- followed by volume of 1000 kernels and WTKe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e6“The plant height had the highest contribution to grain yield followed by volume of 1000 kernels and WTK”
Claim · model-written summary
The introgression lines were diverse.
- Taxon
- winter bread wheatTriticum aestivume0
- Material
- introgression linese7
- Outcome
- diversee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e7“The introgression lines were found to be diverse”
Claim · model-written summary
The introgression lines are recommended for wheat improvement for disease or drought resistance in Southern Ukraine.
- Taxon
- wheatTriticum aestivume1
- Outcome
- use in the wheat improvement programse1
- Qualifier
- for resistance to the diseases or droughte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter bread wheat (Triticum aestivum L.)”
e1“potential for use in the wheat improvement programs for resistance to the diseases or drought in Southern Ukraine”