4.7 Review

Effective Pollen-Fertility Restoration Is the Basis of Hybrid Rye Production and Ergot Mitigation

Journal

PLANTS-BASEL
Volume 11, Issue 9, Pages -

Publisher

MDPI
DOI: 10.3390/plants11091115

Keywords

Claviceps purpurea; CMS; hybrid breeding; pollen; restorer genes; yield

Categories

Funding

  1. Federal Ministry of Education and Research (BMBF), Bonn, Germany [0311601]
  2. Federal Ministry for Economic Affairs and Climate [188EN/1]
  3. Gemeinschaft zur Forderung von Pflanzeninnovation e.V.
  4. Narodowe Centrum Badan i Rozwoju (NCBIR)
  5. Polish Seed Association [CORNET/21/2/2016]
  6. University of Hohenheim (TG77 funds), Stuttgart, Germany
  7. HYBRO Saatzucht GmbH & Co. KG, Schenkenberg, Germany
  8. KWS LOCHOW GMBH, Bergen, Germany

Ask authors/readers for more resources

Hybrid rye breeding can significantly increase yield and income, and can address low pollen fertility and susceptibility to ergot issues by utilizing Rf genes from Iran and Argentina.
Hybrid rye breeding leads to considerably higher grain yield and a higher revenue to the farmer. The basis of hybrid seed production is the CMS-inducing Pampa (P) cytoplasm derived from an Argentinean landrace and restorer-to-fertility (Rf) genes. European sources show an oligogenic inheritance, with major and minor Rf genes, and mostly result in low-to-moderate pollen-fertility levels. This results in higher susceptibility to ergot (Claviceps purpurea) because rye pollen and ergot spores are in strong competition for the unfertilized stigma. Rf genes from non-adapted Iranian primitive rye and old Argentinean cultivars proved to be most effective. The major Rf gene in these sources was localized on chromosome 4RL, which is also a hotspot of restoration in other Triticeae. Marker-based introgression into elite rye materials led to a yield penalty and taller progenies. The Rfp1 gene of IRAN IX was fine-mapped, and two linked genes of equal effects were detected. Commercial hybrids with this gene showed a similar low ergot infection when compared with population cultivars. The task of the future is to co-adapt these exotic Rfp genes to European elite gene pools by genomic-assisted breeding.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available