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Production and cytomolecular identification of new wheat-perennial rye (Secale cereanum) disomic addition lines with yellow rust resistance (6R) and increased arabinoxylan and protein content (1R, 4R, 6R)

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Abstract

Key message

Wheat- Secale cereanum addition lines with yellow rust resistance (6R) and increased arabinoxylan content (1R, 4R, 6R) have been selected and identified in order to increase biodiversity of wheat.

Abstract

Perennial rye (Secale cereanum, 2n = 2x = 14, RR) cultivar Kriszta has a large gene pool that can be exploited in wheat breeding. It has high protein and dietary fibre content, carries several resistance genes, tolerant to frost and drought, and adapts well to disadvantageous soil and weather conditions. In order to incorporate agronomically useful features from this perennial rye into cultivated wheat, backcross progenies derived from a cross between the wheat line Mv9kr1 and perennial rye ‘Kriszta’ have been produced, and addition lines disomic for 1R, 4R and 6R chromosomes have been selected using GISH, FISH and SSR markers. Quality measurements showed that addition of ‘Kriszta’ chromosomes 4R and 6R to the wheat genome had increased the total protein content. The 4R addition line contained slightly, while 1R and 6R additions significantly higher amount of arabinoxylan than the parental wheat line. Besides this, the 6R addition line appeared to be resistant to yellow rust in highly infected nurseries, consequently it may carry a new effective gene different from that harboured in the 1RS.1BL translocation for resistance to this disease.

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Acknowledgments

This work was financed by the Hungarian National Scientific Research Fund (OTKA–No. K104382). Dietary fibre measurements were supported by OTKA 112169 project. The authors are grateful to I. Molnár for his advice regarding molecular marker analysis. The authors thank the colleagues working in the Wheat Quality Laboratory to measure the quality parameters. The technical assistance of F. Tóth, J. Bucsi and the Organic Breeding Team is gratefully acknowledged. Thanks are due to A. Bacskovszky for revising the manuscript linguistically.

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  1. Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, 2462, Martonvásár, Hungary

    Annamária Schneider, Marianna Rakszegi, Márta Molnár-Láng & Éva Szakács

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  1. Annamária Schneider
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Schneider, A., Rakszegi, M., Molnár-Láng, M. et al. Production and cytomolecular identification of new wheat-perennial rye (Secale cereanum) disomic addition lines with yellow rust resistance (6R) and increased arabinoxylan and protein content (1R, 4R, 6R). Theor Appl Genet 129, 1045–1059 (2016). https://doi.org/10.1007/s00122-016-2682-6

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