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Identification of temperature sensitive resistance to Puccinia striiformis f. sp. tritici in wheat differential hosts and its potential applications in resistance breeding
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Temperature affects wheat resistance responses infected by Puccinia striiformis f. sp. tritici (Pst). In order to identify if thirty-one entries of Chinese, international and other tester wheat cultivars possess temperature sensitive resistance, the entries were studied in seedling stage at two different day/night temperature regimes (24/18°C and 14/10°C). Four entries, Lutescens 128, Funo, Lee and Carstens V, were confirmed no temperature sensitive resistance genes. Six wheat cultivars, Early Piemium, Fengchan 3, Fulhard, Heines VII, Mentana and Virgilio, have shown temperature sensitive resistance. Comparison with four standard lines (S110, S111, S112, S113) with 0-3 temperature sensitive genes, derived from crosses of Itana/PI 178383, the resistance to Pst race 10E162 in Virgilio controlled by two temperature sensitive genes, and Mentana and Fulhard each possessed one temperature sensitive gene. Virgilio, Fulhard and Mentana as the temperature sensitive gene resources are useful in breeding for resistance to stripe rust. As the differential hosts of wheat stripe rust, it is necessary to strictly control the temperature without exceeding 18°C, since infection type may differ due to the different temperature.
Keywords: Differential hosts; Puccinia striiformis f. sp. tritici; Temperature sensitive resistance; Wheat
RAFT IT and Publications Pvt Limited
Title: Identification of temperature sensitive resistance to Puccinia striiformis f. sp. tritici in wheat differential hosts and its potential applications in resistance breeding
Description:
Temperature affects wheat resistance responses infected by Puccinia striiformis f.
sp.
tritici (Pst).
In order to identify if thirty-one entries of Chinese, international and other tester wheat cultivars possess temperature sensitive resistance, the entries were studied in seedling stage at two different day/night temperature regimes (24/18°C and 14/10°C).
Four entries, Lutescens 128, Funo, Lee and Carstens V, were confirmed no temperature sensitive resistance genes.
Six wheat cultivars, Early Piemium, Fengchan 3, Fulhard, Heines VII, Mentana and Virgilio, have shown temperature sensitive resistance.
Comparison with four standard lines (S110, S111, S112, S113) with 0-3 temperature sensitive genes, derived from crosses of Itana/PI 178383, the resistance to Pst race 10E162 in Virgilio controlled by two temperature sensitive genes, and Mentana and Fulhard each possessed one temperature sensitive gene.
Virgilio, Fulhard and Mentana as the temperature sensitive gene resources are useful in breeding for resistance to stripe rust.
As the differential hosts of wheat stripe rust, it is necessary to strictly control the temperature without exceeding 18°C, since infection type may differ due to the different temperature.
Keywords: Differential hosts; Puccinia striiformis f.
sp.
tritici; Temperature sensitive resistance; Wheat.
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