Full TGIF Record # 282643
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DOI:10.17660/eJHS.2017/82.1.4
Web URL(s):http://www.pubhort.org/ejhs/82/1/4/82_1_4.pdf
    Last checked: 04/11/2017
    Requires: PDF Reader
Publication Type:
i
Report
Author(s):Chang, Zhihui; Sun, Bihui; Li, Deying
Author Affiliation:Chang and Sun: Forestry College, Beijing Forestry University, Beijing, China; Li: Department of Plant Sciences, North Dakota State University, Fargo, ND
Title:Water withholding contributes to winter hardiness in perennial ryegrass (Lolium perenne L.)
Source:European Journal of Horticultural Science. Vol. 82, No. 1, 2017, p. 31-37.
Publishing Information:Stuttgart, Germany: Eugen Ulmer KG
# of Pages:7
Keywords:TIC Keywords: Cold resistance; Comparisons; Cultivar evaluation; Cultivar improvement; Lolium perenne; Morphological evaluation; Winterkill
Cultivar Names:Brightstar SLT; UNO; Fiesta; Evening Shade; NK-200; Linn
Abstract/Contents:"Perennial ryegrass (Lolium perenne L.) is an important turf and forage species in mild temperate regions. In cold regions, it is vulnerable to winter kill. The objective of this study was to investigate possible associations between cold tolerance and morphological traits that regulate water movement in perennial ryegrass. Cultivars 'Uno', 'Brightstar SLT', 'Fiesta', 'Evening Shade', 'NK-200', and 'Linn', representing different levels of cold tolerance and winter hardiness, were used in the study. Previously reported cold tolerant cultivars, 'Uno' and 'Brightstar SLT', showed smaller but higher density of stomata than cold sensitive cultivars such as 'Linn' and 'NK-200'. In addition, cold tolerant cultivars had either higher density of short cells or higher density of hairs in the epidermis compared to the cold sensitive cultivars. Water wetting angles on the upper epidermis also indicated that 'Uno' had a better protection from water loss than cold sensitive cultivars, especially 'Linn'. The water loss rate (% per day) was significantly higher for 'Linn' than 'Uno', which were 3.39 and 2.27, respectively. Simulated wind desiccation combined with freezing at -10°C after cold acclimation further showed that stronger water withholding ability contributed to the increased freezing tolerance. The results suggest that including water conserving morphologies in the selection process may help breeding for freeze tolerant perennial ryegrass."
Language:English
References:49
Note:Includes sidebar, "Significance of this study", p. 31
Summary appears as abstract
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chang, Z., B. Sun, and D. Li. 2017. Water withholding contributes to winter hardiness in perennial ryegrass (Lolium perenne L.). European Journal of Horticultural Science. 82(1):p. 31-37.
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DOI: 10.17660/eJHS.2017/82.1.4
Web URL(s):
http://www.pubhort.org/ejhs/82/1/4/82_1_4.pdf
    Last checked: 04/11/2017
    Requires: PDF Reader
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