Abstract
Leaf rust (caused by Puccinia triticina Eriks.) is a worldwide and yield‐limiting disease of common wheat ( Triticum aestivum L.). The gene Lr32 , which confers seedling resistance to leaf rust, was previously transferred from Aegilops tauschii Coss. (RL5497‐1) to chromosome 3DS of common wheat. Without exception, Lr32 conferred resistance to 616 diverse isolates of leaf rust sampled from Canadian wheat fields over the past decade (2000 to 2009). Marker alleles specific to chromosome 3DS of RL5497 were found in Lr32 backcross lines of both Katepwa (BW196R) and Thatcher (RL6086). These introgressions from A. tauschii had no adverse effects on either agronomic performance or end use quality. A map based on 338 doubled haploid lines (DHL) from the cross of BW196R × Thatcher showed that Lr32 was slightly distal (0.6 cM) to two simple sequence repeat (SSR) loci wmc43 and barc135, which cosegregated on chromosome 3DS. A survey of the fragments amplified in wheats of diverse origin showed that both wmc43 and barc135 were cross‐applicable as markers for stacking Lr32 with other broadly effective leaf rust resistance genes.
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Claims 6
Claim · model-written summary
Without exception, Lr32 conferred resistance to 616 diverse leaf rust isolates sampled from Canadian wheat fields between 2000 and 2009.
- Taxon
- Wheat
Triticum aestivumt0 - Interactor
- leaf ruste0pathogen
- Gene
- Lr32t0
- Outcome
- resistancee0
- Value
- 616 diverse isolatese0
- Setting
- Canadian wheat fieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Gene Lr32”
e0“Without exception, Lr32 conferred resistance to 616 diverse isolates of leaf rust sampled from Canadian wheat fields over the past decade (2000 to 2009)”
Claim · model-written summary
Marker alleles specific to chromosome 3DS of RL5497 were found in Lr32 backcross lines of both Katepwa (BW196R) and Thatcher (RL6086).
- Taxon
- WheatTriticum aestivumt0
- Material
- Katepwa (BW196R) and Thatcher (RL6086)e0
- Gene
- Lr32t0
- Outcome
- Marker alleles specific to chromosome 3DS of RL5497e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Gene Lr32”
e0“Marker alleles specific to chromosome 3DS of RL5497 were found in Lr32 backcross lines of both Katepwa (BW196R) and Thatcher (RL6086)”
Claim · model-written summary
The Aegilops tauschii introgressions had no adverse effects on agronomic performance or end use quality of the wheat backcross lines.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- introgressions from A. tauschiie0
- Outcome
- agronomic performance or end use qualitye0
- Direction
- no adverse effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Gene Lr32”
e0“These introgressions from A. tauschii had no adverse effects on either agronomic performance or end use quality”
Claim · model-written summary
In the mapping population of 338 doubled haploid lines, Lr32 was slightly distal (0.6 cM) to the SSR loci wmc43 and barc135.
- Taxon
- WheatTriticum aestivumt0
- Gene
- wmc43 and barc135e0
- Outcome
- slightly distale0
- Value
- 0.6 cMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Gene Lr32”
e0“Lr32 was slightly distal (0.6 cM) to two simple sequence repeat (SSR) loci wmc43 and barc135”
Claim · model-written summary
The SSR loci wmc43 and barc135 cosegregated on chromosome 3DS.
- Taxon
- WheatTriticum aestivumt0
- Gene
- wmc43 and barc135e0
- Outcome
- cosegregated on chromosome 3DSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Gene Lr32”
e0“wmc43 and barc135, which cosegregated on chromosome 3DS”
Claim · model-written summary
Both wmc43 and barc135 were cross-applicable as markers in diverse wheats for stacking Lr32 with other leaf rust resistance genes.
- Taxon
- WheatTriticum aestivumt0
- Gene
- wmc43 and barc135e0
- Outcome
- cross‐applicable as markerse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Wheat Gene Lr32”
e0“both wmc43 and barc135 were cross‐applicable as markers”
The same questions in other papers
transgenic · quality: general · Triticum aestivum (wheat)Positive and negative results
1 in the opposite direction
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.