Hostname: page-component-797576ffbb-cx6qr Total loading time: 0 Render date: 2023-12-01T14:37:21.581Z Has data issue: false Feature Flags: { "corePageComponentGetUserInfoFromSharedSession": true, "coreDisableEcommerce": false, "useRatesEcommerce": true } hasContentIssue false

Powdery mildew resistance in some new wheat amphiploids (2n = 6x = 42) derived from A- and S-genome diploid progenitors

Published online by Cambridge University Press:  09 August 2012

Khola Rafique
Department of Plant Pathology, PMAS Arid Agriculture University, Rawalpindi, Pakistan
Awais Rasheed*
Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
Alvina Gul Kazi
Atta-ur-Rehman School of Applied Biosciences (ASAB), National University of Science and Technology (NUST), Islamabad, Pakistan
Hadi Bux
Institute of Plant Sciences, Sindh University, Jamshoro, Pakistan
Farah Naz
Department of Plant Pathology, PMAS Arid Agriculture University, Rawalpindi, Pakistan
Tariq Mahmood
Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
Abdul Mujeeb-Kazi
National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
*Corresponding author. E-mail:


Triticum urartu possesses the Au genome common to bread wheat. Similarly, Triticum monococcum contains the Am genome, which is closely related to the A-genome donor of bread wheat. Aegilops speltoides of the Sitopsis section has the S genome, which is most similar to the B genome of bread and durum wheat when compared with all other wild grasses. Amphiploids developed through bridge crossing between Am/Au and S-genome diploid resources and elite durum cultivars demonstrate enormous diversity to improve both bread and durum wheat cultivars. We evaluated such A-genome amphiploids (Triticum turgidum × T. urartu and T. turgidum × T. monococcum, 2n = 6x = 42; BBAAAmAm/AuAu) and S-genome amphiploids (T. turgidum × Ae. speltoides, 2n = 6x = 42; AABBSS) along with their durum parents (AABB) for their resistance to powdery mildew (PM) at the seedling stage. The results indicated that 104 accessions (53.6%) of A-genome amphiploids (AABBAmAm/AuAu) were resistant to PM at the seedling stage. Of their 24 durum parents, five (20.83%) were resistant to PM and 16 (66.6%) were moderately tolerant. Similarly, ten (50%) accessions of S-genome amphiploids (BBAASS) possessed seedling PM resistance, suggesting a valuable source of major resistance genes. PM screening of the amphiploids and parental durum lines showed that resistance was contributed either by the diploid progenitors or durum parents, or both. We also observed the suppression of resistance in several cases; for example, resistance in durum wheat was suppressed in respective amphiploids. The results from this germplasm screening will facilitate their utilization to genetically control PM and widen the genetic base of wheat.

Research Article
Copyright © NIAB 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)


Bai, D and Knott, DR (1992) Suppression of rust resistance in bread wheat (Triticum aestivum L.) by D-genome chromosomes. Genome 35: 276282.Google Scholar
Bennett, GAF (1984) Resistance to powdery mildew in wheat: a review of its use in agriculture and breeding programmes. Plant Pathology 33: 279300.Google Scholar
Buloichik, AA, Borzyak, VS and Voluevich, EA (2008) Influence of alien chromosomes on the resistance of soft wheat to biotrophic fungal pathogens. Cytology Genetics 42: 915.Google Scholar
Duggal, V, Jellis, GJ, Hollins, TW and Stratford, R (2000) Resistance to powdery mildew in mutant lines of the susceptible wheat cultivar Hobbit ‘sib’. Plant Pathology 49: 468476.Google Scholar
Eastwood, RF, Lagudah, ES and Appels, R (1991) Triticum tauschii: a novel source of resistance to cereal cyst nematode (Heterodera avenae). Australian Journal of Agricultural Research 42: 6977.Google Scholar
Eilam, T, Anikster, Y, Millet, E, Manisterski, J, Sagi-Assif, O and Feldman, M (2007) Genome size and genome evolution in diploid Triticeae species. Genome 50: 10291037.Google Scholar
Gill, BS, Hatchett, JH and Raupp, JW (1987) Chromosomal mapping of Hessian fly-resistance genes H13 in the D genome of wheat. Journal of Heredity 78: 97100.Google Scholar
Griffey, CA, Das, MK and Stromberg, EL (1993) Effectiveness of adult-plant resistance in reducing grain yield loss to powdery mildew in winter wheat. Plant Disease 77: 618622.Google Scholar
Harvey, TL, Martin, TJ and Livers, RW (1980) Resistance to biotype C greenbug in synthetic hexaploid wheats derived from Triticum tauschii. Journal of Economic Entomology 73: 387389.Google Scholar
Hsam, SLK, Lapochkina, IF and Zeller, FJ (2003) Chromosomal location of genes for powdery mildew resistance in common wheat (Triticum aestivum L. em Thell.). 8. Gene Pm32 in a wheat-Aegilops speltoides translocation line. Euphytica 133: 367370.Google Scholar
Huang, XQ and Roder, MS (2004) Molecular mapping of powdery mildew resistance genes in wheat: a review. Euphytica 137: 203223.Google Scholar
Jia, JZ (1996) RFLP-based maps of the homoeologous group-6 chromosomes of wheat and their in the tagging of Pm12, powdery mildew resistance gene transferred from Aegilops speltoides to wheat. Theoretical and Applied Genetics 92: 559565.Google Scholar
Jiang, J, Friebe, B and Gill, BS (1994) Recent advances in alien gene transfer in wheat. Euphytica 73: 199212.Google Scholar
Johnson, BL (1975) Identification of the apparent B-genome donor of wheat. Genome 17: 2139.Google Scholar
Johnson, BL and Dhaliwal, HS (1976) Reproductive isolation of Triticum boeoticum and Triticum urartu and the origin of the tetraploid wheats. American Journal of Botany 63: 10881094.Google Scholar
Kerber, ER and Dyck, PL (1969) Inheritance in hexaploid wheat of leaf rust resistance and other characters derived from Aegilops squarrosa. Genome 11: 639647.Google Scholar
Kilian, B, Mammen, K, Millet, E, Sharma, R, Garner, A, Salamini, F, Hammer, K and Ozkan, H (2011) Aegilops. Wild Crop Relatives: Genomics and Breeding Resources, Cereals. Berlin/Heidelberg: Springer-Verlag.Google Scholar
McIntosh, RA, Yamazaki, Y, Dubcovsky, J, Rogers, J, Morris, F, Somers, DJ, Appels, R and Devos, KM (2010) Catalog of gene symbols for wheat. MacGene. .Google Scholar
McIntosh, RA, Zhang, P, Cowger, C, Parks, R, Lagudah, ES and Hoxha, S (2011) Rye-derived powdery mildew resistance gene Pm8 in wheat is suppressed by the Pm3 locus. Theoretical and Applied Genetics 123: 359367.Google Scholar
McNeal, F, Konzak, CF, Smith, EP, Tate, WS and Russell, TS (1971) A uniform system for recording and processing cereal research data. USDA-ARS 34: 121143.Google Scholar
Miranda, LM, Murphy, JP, Marshall, D, Cowger, C and Leath, S (2007) Chromosomal location of Pm35, a novel Aegilops tauschii derived powdery mildew resistance gene introgressed into common wheat (Triticum aestivum L.). Theoretical and Applied Genetics 114: 14511456.Google Scholar
Miranda, LM, Murphy, JP, Marshall, D and Leath, S (2006) Pm34: a new powdery mildew resistance gene transferred from Aegilops tauschii Coss. to common wheat (Triticum aestivum L.). Theoretical and Applied Genetics 113: 14971504.Google Scholar
Mujeeb-Kazi, A (2003) Wheat improvement facilitated by novel genetic diversity and in vitro technology. Plant Tissue Culture 13: 179210.Google Scholar
Mujeeb-Kazi, A (2006) Utilization of genetic resources for bread wheat improvement. In: (eds) CRC Series. Boca Raton, FL: Taylor and Francis Group, pp. 6197.Google Scholar
Nelson, JC, Singh, RP, Autrique, JE and Sorrells, ME (1997) Mapping genes conferring and suppressing leaf rust resistance in wheat. Crop Science 37: 19281935.Google Scholar
Olivera, PD, Kolmer, JA, Anikster, Y and Steffenson, BJ (2007) Resistance of Sharon goatgrass (Aegilops sharonensis) to fungal diseases of wheat. Plant Disease 91: 942950.Google Scholar
Qiu, YC, Sun, XL, Zhou, RH, Kong, XY, Zhang, SS and Jia, JZ (2006) Identification of microsatellite markers linked to powdery mildew resistance gene Pm2 in wheat. Cereal Research Communications 34: 12671273.Google Scholar
Thomas, JB and Connor, RL (1986) Resistance to colonization by the wheat curl mite in Aegilops squarrosa and its inheritance after transfer to common wheat. Crop Science 26: 527530.Google Scholar
Trottet, J, Jahier, J and Tanguy, AM (1982) A study of an amphiploid between Aegilops squarrosa Tausch. and Triticum dicoccum Schubl. Cereal Research Communications 10: 5559.Google Scholar
Yao, G, Zhang, J, Yang, L, Xu, H, Jiang, Y, Xiong, L, Zhang, C, Zhang, Z, Ma, Z and Sorrells, ME (2007) Genetic mapping of two powdery mildew resistance genes in einkorn (Triticum monococcum L.) accessions. Theoretical and Applied Genetics 114: 351358.Google Scholar
Zeller, FJ, Kong, L, Hartl, L, Mohler, V and Hsam, SLK (2002) Chromosomal location of genes for resistance to powdery mildew in common wheat (Triticum aestivum L. em Thell.). 7. Gene Pm29 in line Pova. Euphytica 123: 187194.Google Scholar
Zhu, Z, Zhou, R, Kong, X, Dong, Y and Jia, J (2006) Microsatellite marker identification of a Triticum aestivumAegilops umbellulata substitution line with powdery mildew resistance. Euphytica 150: 149153.Google Scholar
Supplementary material: File

Rafique Supplementary Material

Table S1

Download Rafique Supplementary Material(File)
File 48 KB