Enhancing Fusarium crown rot resistance by pyramiding large-effect QTL in common wheat (Triticum aestivum L.)

Enhancing Fusarium crown rot resistance by pyramiding large-effect QTL in common wheat (Triticum... Fusarium crown rot (FCR) has become one of the most damaging cereal diseases in semi-arid regions worldwide. Targeting three large-effect QTL (located on the chromosome arm 3BL, 5DS and 2DL, respectively), we investigated the feasibility of enhancing FCR resistance by gene pyramiding. Significant effects were detected for each of the three QTL in both populations assessed. Lines with any combination of two resistant alleles gave significantly better resistance than those with a single resistant allele only and those without any allele, and lines possessing all three resistant alleles showed the best resistance. These results demonstrated that gene pyramiding can be an effective approach in improving FCR resistance. Those lines with resistant alleles from all three QTL could be valuable genetic stocks for breeding programs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Molecular Breeding Springer Journals

Enhancing Fusarium crown rot resistance by pyramiding large-effect QTL in common wheat (Triticum aestivum L.)

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media B.V.
Subject
Life Sciences; Plant Sciences; Plant Genetics and Genomics; Plant Pathology; Plant Physiology; Biotechnology
ISSN
1380-3743
eISSN
1572-9788
D.O.I.
10.1007/s11032-017-0708-7
Publisher site
See Article on Publisher Site

Abstract

Fusarium crown rot (FCR) has become one of the most damaging cereal diseases in semi-arid regions worldwide. Targeting three large-effect QTL (located on the chromosome arm 3BL, 5DS and 2DL, respectively), we investigated the feasibility of enhancing FCR resistance by gene pyramiding. Significant effects were detected for each of the three QTL in both populations assessed. Lines with any combination of two resistant alleles gave significantly better resistance than those with a single resistant allele only and those without any allele, and lines possessing all three resistant alleles showed the best resistance. These results demonstrated that gene pyramiding can be an effective approach in improving FCR resistance. Those lines with resistant alleles from all three QTL could be valuable genetic stocks for breeding programs.

Journal

Molecular BreedingSpringer Journals

Published: Aug 9, 2017

References

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