Yr15 — a new gene for resistance to Puccinia striiformis in Triticum dicoccoides sel. G-25

Gerechter-Amitai, Z. K.; Silfhout, C.H. van; Grama, A.; Kleitman, Frida

doi:10.1007/bf00037912

Cited by 82 publications

(38 citation statements)

References 4 publications

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“…These are Lr18 on 5BL that derives from T. timopheevii (Dyck & Samborski, 1968) and Yr15 from T. dicoccoides (Gerechter-Amitai et al, 1989) that is located on 1BS (McIntosh et al, 1995). reported the transfer of two linked genes with temporary designations LrS8 and YrS8 from T. dicoccoides accession 479 that was obtained from Israel in 1983.…”

Section: Introductionmentioning

confidence: 98%

Leaf rust and stripe rust resistance genes transferred to common wheat from Triticum dicoccoides

et al. 2005

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Linked leaf rust and stripe rust resistance genes introduced from Triticum dicoccoides protected common wheat seedlings against a range of pathotypes of the respective pathogens. The genes were chromosomally mapped using monosomic and telosomic analyses, C-banding and RFLPs. The data indicated that an introgressed region is located on wheat chromosome arm 6BS. The introgressed region did not pair with the 'Chinese Spring' 6BS arm during meiosis possibly as a result of reduced homology, but appeared to pair with 6BS of W84-17 (57% of pollen mother cells) and 'Avocet S'. The introgressed region had a very strong preferential pollen transmission (0.96-0.98) whereas its transmission through egg cells (0.41-0.66) varied with the genetic background of the heterozygote. Homozygous resistant plants had a normal phenotype, were fertile and produced plump seeds. Symbols Lr53 and Yr35 are proposed to designate the respective genes.

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Section: Introductionmentioning

confidence: 98%

Leaf rust and stripe rust resistance genes transferred to common wheat from Triticum dicoccoides

et al. 2005

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“…The susceptibility of the lines with cross code B 195 and X1 in contrast to the other selections may find its explanation in the fact that the wild emmer selection GI 10 (Van Silfhout & Gerechter-Amitai, 1988) was selected for high protein content (Van Silfhout, personal communication) and G695 as selected for mildew resistance but not for yellow rust resistance (Groenewegen & Van Silfhout, 1988 (1989) that many wild emmer derivatives contain some undescribed genes on its own or in addition to Yr9, Yr6 and YrSU found in this study, and Yrl S reported earlier by Gerechter-Amitai et al . (1989) .…”

Section: Resultsmentioning

confidence: 99%

“…Wild emmer wheat is a source for disease resistance and high protein content (Gerechter-Amitai & Van Silfhout, 1984 ;Grama et al ., 1983) . Extensive research on wild emmer wheat was carried out in Israel and the Netherlands (Gerechter-Amitai & Stubbs, 1970 ;Gerechter-Amitai et al ., 1989 ;Nevo & Beiles, 1989 ;Van Silfhout & Gerechter-Amitai, 1989 ;Van Silfhout et al ., 1989) . Some promising wild emmer derivatives introduced from Israel were selected in Nepal for further evaluation .…”

Section: Introductionmentioning

confidence: 99%

Postulation of resistance genes to yellow rust in wild emmer wheat derivatives and advanced wheat lines from Nepal

Sharma

Louwers²,

Karki

et al. 1995

Euphytica

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“…Similarly, Plant Pathology Division had tested wild emmer derivative (Triticum dicoccoides) to broaden the genetic base of wheat cultivars in Nepal [8,20]. The lines V763 and V879 were resistant to the rust and they have T. dicoccoides G-25 in their pedigree which carries Yr15 [21]. This gene was incorporated in high yielding disease susceptible wheat varieties, such as UP262, RR21, Triveni and Vaskar.…”

Section: Evaluation Of Wheat Lines/cultivars For Stripe Rust Resistancementioning

confidence: 99%

Wheat Stripe Rust Virulence and Varietal Resistance in the Foot Hill Himalayas of Nepal

Sharma¹,

Duveiller²,

Karki³

et al. 2015

JAST-B

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Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst) is an important disease of wheat (Triticum aestivum) in Nepal, which is a part of the Himalayas stretching over the North of Nepal, India, Pakistan, Bhutan and beyond. Wheat production plays a crucial role in food security of the marginal hill farmers of Nepal. Frequent epidemics of the rust have caused huge loss in farmer's field. Periodic monitoring during 1980-2008 showed that changes in virulence occurred during this period. The objective of this study was to evaluate Pst resistance and its effective genes in wheat genotypes. For this, trap nurseries, wheat stripe rust differentials, commercial cultivars and advanced breeding lines were tested under artificial epiphytotic and natural hot spots conditions during 2005 to 2010. Four genes (Yr5, Yr10, Yr15 and YrSp) consistently showed resistance to the prevailing races. The gene Yr9 and Yr27 in combinations with Yr18 were found effective. Other lines with combination of minor genes were also found effective. The genotypes Amadina, Kukuna, Tukuru, Kakatsi and Buck Buck widely used in breeding program were resistant. The cultivation of varieties WK1204, Gautam, Gaura and Dhaulagiri have ensured genetic diversity for the rust resistance and slowed down frequent occurrence of epidemics. The findings of these studies could help in developing effective varietal resistance program in the sub-continent.

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Yr15 — a new gene for resistance to Puccinia striiformis in Triticum dicoccoides sel. G-25

Cited by 82 publications

References 4 publications

Leaf rust and stripe rust resistance genes transferred to common wheat from Triticum dicoccoides

Leaf rust and stripe rust resistance genes transferred to common wheat from Triticum dicoccoides

Postulation of resistance genes to yellow rust in wild emmer wheat derivatives and advanced wheat lines from Nepal

Wheat Stripe Rust Virulence and Varietal Resistance in the Foot Hill Himalayas of Nepal

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