Alternate schemes for combining leaf rust resistance genes through molecular marker


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Authors

  • D DATTA
  • M PRASHAR
  • S C BHARDWAJ
  • SANJAY SINGH

Keywords:

Gene pyramiding, Lr19 gene, Lr24 gene, Marker validation, Molecular markers, Triticum aestivum

Abstract

The molecular marker for Lr9, Lr19 and Lr24 were validated in the parents and segregating F2 populations derived from the cross between PBW343 and the donors of leaf rust resistance genes Lr9 (HP1633), Lr19 (TcLr19) and Lr24 (HP1776). The markers for Lr9, Lr19 and Lr24 were able to discriminate the lines with specific genes from the lines that did not carry these genes. Further, molecular markers and the resistance genes co-segregated. Three different breeding schemes were followed to develop lines containing combination of Lr9+Lr19+Lr24. Frequency of high yielding lines in the three selection schemes ranged from 10 to 20%. Genetic stocks with combined resistance genes Lr9+Lr19+ Lr24+Lr26+Sr24+Sr25+Sr31+Yr9+Yr27 were developed in the background of PBW343.

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Issue

Vol. 81 No. 7 (2011)

Section

Articles

License

The copyright of the articles published in The Indian Journal of Agricultural Sciences is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

DATTA, D., PRASHAR, M., BHARDWAJ, S. C., & SINGH, S. (2011). Alternate schemes for combining leaf rust resistance genes through molecular marker. The Indian Journal of Agricultural Sciences, 81(7). https://epubs.icar.org.in/index.php/IJAgS/article/view/7375