Skip to main content
Log in

Phenotyping and QTL mapping for cold tolerance at the germination and seedling stages in Argentine temperate rice

  • Published:
Euphytica Aims and scope Submit manuscript

Abstract

In Argentina, the yield potential of rice (Oryza sativa L.) under suboptimal temperatures of temperate regions and during early sowing in tropical regions depends on its low-temperature germinability (LTG) and subsequent cold tolerance at the seedling stage (CTS). This study focused on the phenotyping and identification of contrasting henotypes for LTG and CTS of 18 rice genotypes genotyped with 49 markers previously linked to cold tolerance. The selected markers revealed phenotypic variability among the genotypes evaluated. The results also demonstrated that both traits are regulated by different genes and that CTS is associated with differential alleles of candidate gene (CG)-based markers. Biplot clustering analysis allowed the selection of two cultivars, H298a/90 and Puitá INTA CL, contrasting for LTG, CTS and CG alleles. An F2 population (n = 128) derived from these two cultivars was genotyped with 43 SSR- and CG-based markers and 89 F2:3 families (~ 1800 seedlings) phenotyped for CTS. Single-marker analysis detected two major QTL that had been previously reported for CTS: qCTS11, which explained 18.35% of the phenotypic variance at 7 days of treatment, and qCTS12, which explained 26.62% and 47.94% of the phenotypic variance at 7 and 14 days of treatment, respectively. Marker-assisted introgression of QTL alleles favorable for CTS into Puitá INTA CL, which has high LTG, could contribute to obtaining breeding lines with early seedling vigor adapted to the sowing season in Argentina.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

Download references

Acknowledgments

We thank Dr. Sofía Eugenia Olmos and Dr. Julia Verónica Sabio Garcia for their useful comments and suggestions to improve the manuscript. Financial support from the National Institute of Agricultural Technology of Argentina (INTA) (Grant No. PNBIO1131042) (Research Grant # AEBIO 241311 and Graduate Scholarship for M.L. Bonell) is acknowledged.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Martha Lucrecia Bonell.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Bonell, M.L., Arguissain, G.G., Crepy, M.A. et al. Phenotyping and QTL mapping for cold tolerance at the germination and seedling stages in Argentine temperate rice. Euphytica 216, 128 (2020). https://doi.org/10.1007/s10681-020-02661-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s10681-020-02661-3

Keywords

Navigation