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| DOI: | 10.21273/JASHS04121-17 |
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| Publication Type:
| Refereed |
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| Author(s): | Wang, Jinyu;
Burgess, Patrick;
Bonos, Stacy A.;
Meyer, William A.;
Huang, Bingru |
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| Author Affiliation: | Department of Plant Biology and Pathology, Rutgers University, New Brunswick, NJ |
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| Title: | Differential physiological responses and genetic variations in fine fescue species for heat and drought stress |
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| Source: | Journal of the American Society for Horticultural Science. Vol. 142, No. 5, September 2017, p. 367-375. |
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| Publishing Information: | Geneva, New York: The American Society for Horticultural Science |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Cultivar evaluation; Drought resistance; Drought stress; Fine fescues; Genetic variability; Genotypes; Heat resistance; Heat stress; Physiological responses
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| Abstract/Contents: | "Summer decline is typically characterized by heat and drought stress and is a major concern for fine fescue species (Festuca). The objectives of this study were to examine whether heat or drought stress is more detrimental, and to determine the genotypic variations in heat and drought tolerance for fine fescues. A total of 26 cultivars, including seven hard fescues (Festuca trachyphylla), eight chewings fescues (Festuca rubra ssp. commutate), seven strong creeping red fescues (Festuca rubra ssp. rubra), two sheep fescues (Festuca ovina ssp. hirtula), and two slender creeping red fescues (Festuca rubra ssp. littoralis) were subjected to prolonged heat or drought stress in growth chambers. Several physiological parameters, including turf quality (TQ), electrolyte leakage (EL), photochemical efficiency (Fv/Fm) chlorophyll content (Chl), and relative water content (RWC) were measured in plants exposed to heat or drought stress. The results indicated that heat stress was more detrimental than drought stress for fine fescue species. Based on TQ and major physiological parameters (EL and Fv/Fm) under heat stress, several cultivars with good heat tolerance were selected, including 'Blue Ray', 'Spartan II', 'MN-HD1', 'Shoreline', 'Navigator II', 'Azure', 'Beacon', 'Aurora Gold', 'Reliant IV', 'Marco Polo', 'Garnet', 'Wendy Jean', 'Razor', and 'Cindy Lou'. Based on TQ and major physiological parameters (EL, RWC, and Fv/Fm) under drought stress, several cultivars with good drought tolerance were selected, including 'Spartan II', 'MN-HD1', 'Reliant IV', 'Garnet', 'Azure', and 'Aurora Gold'. These cultivars could be used in hot, dry, or both environments and as breeding germplasm for developing heat tolerance, drought tolerance, or both." |
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| Language: | English |
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| References: | 33 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wang, J., P. Burgess, S. A. Bonos, W. A. Meyer, and B. Huang. 2017. Differential physiological responses and genetic variations in fine fescue species for heat and drought stress. J. Am. Soc. Hortic. Sci. 142(5):p. 367-375. |
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| DOI: 10.21273/JASHS04121-17 |
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MSU catalog number: b2221587a |
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