Abstract
Growing resistant varieties is the most effective and economical method for controlling rust of wheat ( Triticum aestivum L.). Resistance to leaf rust and stripe rust, caused by Puccinia triticina Erikss. and P. striiformis Westend. f. sp. tritici , respectively, was investigated in 148 F 5 recombinant inbred lines derived from a cross between ‘Avocet’ and ‘New Pusa 876’ (NP876). The parents and population were phenotyped for resistance in field trials for 3 and 2 yr for leaf rust and stripe rust, respectively, and genotyped with gene‐linked molecular markers. The segregation analyses indicated that the adult plant resistance to leaf rust and stripe rust was conferred by five and four additive effect genes, respectively. Among them, the slow‐rusting adult plant resistance gene Lr46/Yr29 reduced 14 and 16% of mean leaf rust and stripe rust severities, respectively, whereas a severity reduction of 26% occurred due to Lr67/Yr46 for both rusts. Both resistance genes were contributed by NP876. An additive effect between leaf rust resistance genes Lr46 and Lr67 was detected, with a reduction up to 11% when they were present together. The effect of combining Yr29 and Yr46 was additive but not significant, with a mean reduction of 5% in severity. New Pusa 876 can be used as a multiple rust resistance source to breed wheat varieties that may contribute towards durable resistance.
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Claims 10
Claim · model-written summary
Adult plant leaf rust resistance segregated as five additive effect genes.
- Taxon
- Wheat
Triticum aestivumt0 - Outcome
- adult plant resistance to leaf ruste0
- Value
- fivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“adult plant resistance to leaf rust and stripe rust was conferred by five and four additive effect genes, respectively”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
Adult plant stripe rust resistance segregated as four additive effect genes.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- stripe ruste0
- Value
- foure0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“adult plant resistance to leaf rust and stripe rust was conferred by five and four additive effect genes, respectively”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
Lr46/Yr29 reduced mean leaf rust severity by 14%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“slow‐rusting adult plant resistance gene Lr46/Yr29 reduced 14 and 16% of mean leaf rust and stripe rust severities, respectively”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
Lr46/Yr29 reduced mean stripe rust severity by 16%.
- Taxon
- WheatTriticum aestivumt0
- Gene
- Lr46/Yr29e0
- Outcome
- stripe rust severitiese0
- Direction
- reducede0
- Value
- 16%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“slow‐rusting adult plant resistance gene Lr46/Yr29 reduced 14 and 16% of mean leaf rust and stripe rust severities, respectively”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
Lr67/Yr46 reduced leaf rust severity by 26%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a severity reduction of 26% occurred due to Lr67/Yr46 for both rusts”
e1“leaf rust and stripe rust severities”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
Lr67/Yr46 reduced stripe rust severity by 26%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a severity reduction of 26% occurred due to Lr67/Yr46 for both rusts”
e1“leaf rust and stripe rust severities”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
NP876 contributed both resistance genes.
- Taxon
- WheatTriticum aestivumt0
- Material
- NP876e0
- Outcome
- Both resistance genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both resistance genes were contributed by NP876”
e1“Lr46/Yr29”
e2“Lr67/Yr46”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
Together Lr46 and Lr67 had an additive effect reducing leaf rust by up to 11%.
- Taxon
- WheatTriticum aestivumt0
- Gene
- Lr46 and Lr67e0
- Outcome
- leaf ruste0
- Direction
- reductione0
- Value
- up to 11%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An additive effect between leaf rust resistance genes Lr46 and Lr67 was detected, with a reduction up to 11% when they were present together”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
Combining Yr29 and Yr46 gave an additive but nonsignificant mean 5% reduction in stripe rust severity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of combining Yr29 and Yr46 was additive but not significant, with a mean reduction of 5% in severity”
e1“leaf rust and stripe rust, caused by Puccinia triticina Erikss. and P. striiformis Westend. f. sp. tritici”
t0“Indian Wheat Cultivar ‘New Pusa 876’”
Claim · model-written summary
The authors recommend New Pusa 876 as a multiple rust resistance source for breeding.
- Taxon
- wheatTriticum aestivume0
- Material
- New Pusa 876e0
- Outcome
- multiple rust resistance source to breed wheat varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“New Pusa 876 can be used as a multiple rust resistance source to breed wheat varieties that may contribute towards durable resistance”