Full TGIF Record # 159785
Item 1 of 1
DOI:10.2134/agronj2009.0328
Web URL(s):https://dl.sciencesocieties.org/publications/aj/articles/102/1/258
    Last checked: 11/02/2016
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https://dl.sciencesocieties.org/publications/aj/pdfs/102/1/158
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Publication Type:
i
Refereed
Author(s):Merewitz, Emily; Meyer, William; Bonos, Stacy; Huang, Bingru
Author Affiliation:Dep. of Plant Biology and Pathology, Rutgers Univ., New Brunswick, NJ
Title:Drought stress responses and recovery of Texas x Kentucky hybrids and Kentucky bluegrass genotypes in temperate climate conditions
Section:Turfgrass
Other records with the "Turfgrass" Section
Source:Agronomy Journal. Vol. 102, No. 1, January/February 2010, p. 258-268.
Publishing Information:Madison, WI: American Society of Agronomy
# of Pages:11
Keywords:TIC Keywords: Drought recovery; Drought stress; Electrolyte leakage; Genotypes; Hybrids; Poa pratensis; Poa pratensis X Poa arachnifera; Quality evaluation; Relative water content
Abstract/Contents:"Turf quality (TQ) decline due to drought is a major concern in cool-season turfgrass management. The study was conducted to examine whether selected Texas (TBG) x Kentucky bluegrass (KBG) hybrids (HBGs) (Poa arachnifera Torr. x P. pratensis L.) exhibit improved drought stress tolerance and recuperative ability in comparison to commonly-used KBG (P. pratensis) genotypes. Plant material included two HBG selections (HBG568 and HBG668), two commercially-available HBGs (Thermal Blue and Bandera), and two KBG genotypes (Midnight and Baron). The experiment was conducted in field plots covered with a rainout shelter in 2006 and 2007 in North Brunswick, NJ. Treatments consisted of (i) well-watered controls; (ii) drought stress (withholding irrigation) from June to August; and (iii) recovery (rewatering after a period of drought stress) in September and October. The HBGs Thermal Blue and Bandera generally did not show significant difference in turf growth from the two KBG genotypes in both years. HBG568 maintained significantly higher TQ, relative water content (RWC), cell membrane stability, and canopy density estimated as the reflectance ratio of infrared to red (IR/R, leaf area index) and normalized difference vegetation index (NDVI), compared with the two KBG genotypes and other HBGs following a prolonged period of drought stress (after 20 d of treatment) on most sampling dates in both years. HBG568 exhibited more rapid recovery of TQ, IR/R (IR935/R661), NDVI, and sod tensile strength than the other genotypes in both years, while HBG668 also had better recovery in 2007. The results demonstrate genetic variation in drought stress tolerance and recovery among HBGs and KBGs and the potential for the development of HBGs with improved tolerance to drought stress and performance during recovery."
Language:English
References:51
See Also:See also closely related article "Improving drought tolerance in bluegrasses through interspecific hybridization of Kentucky bluegrass with Texas bluegrass" TurfNews, 34(3) May/June 2010, p. 24-26 R=162842 R=162842
See Also:Other items relating to: Disasters - Drought
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Merewitz, E., W. Meyer, S. Bonos, and B. Huang. 2010. Drought stress responses and recovery of Texas x Kentucky hybrids and Kentucky bluegrass genotypes in temperate climate conditions. Agron. J. 102(1):p. 258-268.
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DOI: 10.2134/agronj2009.0328
Web URL(s):
https://dl.sciencesocieties.org/publications/aj/articles/102/1/258
    Last checked: 11/02/2016
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/102/1/158
    Last checked: 11/02/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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