Abstract
Tall fescue (Festuca arundinacea Schreb.) is an important turf grass species for semiarid regions. We examined the effects of low soil moisture and relative genome content on the emergence and early establishment of 14 wild Tall fescue entries collected from various regions in Iran and two commercial turf cultivars. The entries were evaluated under − 1.4, − 0.6, − 0.2, and − 0.03 matric potentials (MPa). Emergence and root and leaf growth decreased under reduced soil water content. Principal component analysis (PCA) revealed that the entries fell into four groups. Entries at group I showed the greatest tolerance to low soil moisture; group II and III were intermediate, and group IV the least tolerant. Isfahan and Gonabad had the best final emergence and longer leaf and root length than the Barvado at 40 % FC. Studies on identification indices of drought resistance by PCA indicated that final emergence, leaf length, and seedling vigor index were most important evaluating indicators for Tall fescue entries. Relative genome content of the wild entries was negatively correlated with emergence (P = 0.02) and leaf length (P = 0.01). The reduction in relative genome content may be a mechanism of adaptation to arid environments.
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Acknowledgments
This research was supported under Iran National Science Foundation Projects funding scheme (project number 90001304). We thank Iran National Science Foundation for their financial support.
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Rohollahi, I., Yamada, T., Azam Khoshkholghsima, N., Kafi, M., Hoshino, Y. (2015). Relationship Between Emergence and Genome Content of Iranian Tall Fescue Entries Under Drought Stress. In: Budak, H., Spangenberg, G. (eds) Molecular Breeding of Forage and Turf. Springer, Cham. https://doi.org/10.1007/978-3-319-08714-6_5
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DOI: https://doi.org/10.1007/978-3-319-08714-6_5
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