Breeding of a hard white wheat “Tamaizumi R” with resistance to wheat yellow mosaic virus

Kiribuchi‐Otobe, Chikako; Fujita, Masaya; Takayama, Tetsuji; Kojima, Hisao; Chono, Makiko; Fujita, Yumiko; Yamakawa, Tomohiro; Matsumoto, Kengo; Kitagami, Toru; Takahasi, Takeshi; Sekiwa, Takahiro

doi:10.1270/jsbbr.18j19

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“…For this purpose, we decided to screen for recombinants in the progeny of a BC 4 line derived from the recurrent parent “Tamaizumi” and “Yumechikara”. Q.Ymym was introduced into “Tamaizumi” by four recurrent backcrosses using two markers, wmc41 and TNAC1139 , which led to the development of a new WYMV‐resistant variety “Tamaizumi R” (Kiribuchi‐Otobe et al, ). During the breeding process, 603 BC 4 F 2 plants were screened and three lines which showed heterozygosity for 19 markers within the Q.Ymym block were obtained (Figure b; Figure S2).…”

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confidence: 99%

“…Six of the nine associated markers are dominant markers detecting either the "Yumechikara" or "Kitahonami" allele; still, several sets of these markers have been used for marker-assisted selection (MAS) in Japanese breeding programmes. Recently, the Q.Ymym QTL has been successfully introduced into the susceptible variety "Tamaizumi" and a new pathotype I resistant variety, "Tamaizumi R", has been registered (Kiribuchi-Otobe et al, 2019).…”

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Characterization of the Q.Ymym region on wheat chromosome 2D associated with wheat yellow mosaic virus resistance

et al. 2019

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Yellow mosaic disease, caused by wheat yellow mosaic virus (WYMV), is one of the most serious diseases of winter wheat in Japan and China. A single major QTL for WYMV resistance in the Japanese wheat variety 'Yumechikara', designated Q.Ymym, has been mapped on a 43.6 cM linkage block between the two markers Xcfd233 and Xgwm349 on chromosome 2D. We were able to obtain two recombinants within the block, which facilitated reducing the size of the linkage block. The pseudomolecule sequence of 'Chinese Spring' (CS) indicated that the original Q.Ymym region of 43.6 cM corresponded to 68.5 Mb and the narrowed Q.Ymym region represents a size of 27.3 Mb. The sequence features of the Q.Ymym region were unique in comparison with CS sequences, which may have led to the low recombination rate within the block. The Q.Ymym haplotype block was detected in other WYMV‐resistant varieties but not in the susceptible varieties used in this study. The unique sequence structure of the Q.Ymym region allowed the development of co‐dominant markers for use in marker‐assisted selection.

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Characterization of the Q.Ymym region on wheat chromosome 2D associated with wheat yellow mosaic virus resistance

et al. 2019

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“…This presents a possibility to pyramid Qym4 with other WYMV-resistance QTLs. Resistance QTLs on chromosome arm 2DL have been reported to be closely linked to small grain size and high polyphenol oxidase activity, both of which are considered undesirable traits in wheat breeding (Kasuya et al 2017, Kiribuchi-Otobe et al 2019). Although we have yet to elucidate whether Qym4 is closely linked to such undesirable agronomic or processing quality traits, our results indicate that Qym4 can be transferred to breeding materials by marker-assisted selection.…”

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A single QTL on chromosome 6DS derived from a winter wheat cultivar ‘OW104’ confers resistance to Wheat yellow mosaic virus

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Wheat yellow mosaic (WYM) is a soilborne disease caused by Wheat yellow mosaic virus (WYMV). Symptoms include yellow mosaic coloring of leaves, stunting, and growth inhibition. Severe infection may result in yield loss. WYM is one of the most serious diseases affecting wheat production in East Asia. The most effective control is through breeding resistant cultivars. A winter wheat cultivar, 'OW104', shows little to no symptoms in heavily WYMV-infested fields in Hokkaido, Japan. Here we detected Qym4, a QTL accounting for 45%-57% of WYMV resistance, in the vicinity of the markers Xcfd49, Xbarc183, and Xgpw4357 on wheat chromosome arm 6DS. F 3 progenies with 'OW104' allele at Qym4 showed significantly higher resistance than those with 'Hokushin' homozygote or heterozygote. We developed 'Hokushin' near-isogenic lines by backcrossing with 'Hokushin' as the recurrent parent and 'OW104' as the resistance donor. All the WYMV-resistant BC 5 F 1 /BC 4 F 1 plants carried 'OW104' allele only at Xcfd49. Our results suggest that the introduction of Qym4 confers resistance to WYMV in winter wheat.

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Development and characterization of wheat yellow mosaic virus-resistant lines carrying Q.Ymym, breaking off the tightly-linked high-activity allele of the polyphenol oxidase gene in the Japanese wheat variety ‘Yumechikara’

史典¹,

久代²,

吾郎³

et al. 2020

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Breeding of a hard white wheat “Tamaizumi R” with resistance to wheat yellow mosaic virus

Cited by 3 publications

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Characterization of the Q.Ymym region on wheat chromosome 2D associated with wheat yellow mosaic virus resistance

Characterization of the Q.Ymym region on wheat chromosome 2D associated with wheat yellow mosaic virus resistance

A single QTL on chromosome 6DS derived from a winter wheat cultivar ‘OW104’ confers resistance to <i>Wheat yellow mosaic virus</i>

Development and characterization of <i>wheat yellow mosaic virus</i>-resistant lines carrying <i>Q.Ymym</i>, breaking off the tightly-linked high-activity allele of the polyphenol oxidase gene in the Japanese wheat variety ‘Yumechikara’

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