Alternate schemes for combining leaf rust resistance genes through molecular marker

Datta, D. and Prashar, M. and Bhardwaj, S.C. and Singh, S.(Sanjay) (2011) Alternate schemes for combining leaf rust resistance genes through molecular marker. Indian Journal of Agricultural Sciences, 81 (7). pp. 602-605.

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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

Item Type: Article
Uncontrolled Keywords: Gene pyramiding; Lr19 gene; Lr24 gene; Marker validation; Molecular markers;Triticum aestivum
Author Affiliation: Regional Station, Directorate of Wheat Research, Flowerdale, Shimla, Himachal Pradesh 171002
Subjects: Crop Improvement > Genetics/Genomics
Crop Improvement > Plant Breeding
Divisions: Other Crops
Depositing User: Ms K Syamalamba
Date Deposited: 16 Sep 2011 04:31
Last Modified: 16 Sep 2011 04:31
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