Full TGIF Record # 144557
Item 1 of 1
DOI:10.21273/HORTSCI.43.7.2191
Web URL(s):https://journals.ashs.org/hortsci/view/journals/hortsci/43/7/article-p2191.xml?rskey=9BlgIQ
    Last checked: 11/21/2019
    Requires: PDF Reader
Publication Type:
i
Refereed
Author(s):Abraham, Eleni M.; Meyer, William A.; Bonos, Stacy A.; Huang, Bingru
Author Affiliation:Abraham: Laboratory of Range Science, Aristotle University of Thessaloniki, Thessaloniki, Greece; Meyer, Bonos, and Huang: Department of Plant Biology and Pathology, Rutgers University, New Brunswick, New Jersey
Title:Differential responses of hybrid bluegrass and Kentucky bluegrass to drought and heat stress
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 43, No. 7, December 2008, p. 2191-2195.
Publishing Information:Alexandria, VA: American Society for Horticultural Science
# of Pages:5
Keywords:TIC Keywords: Poa pratensis X Poa arachnifera; Poa pratensis; Drought stress; Heat stress; Temperatures; Roots; Transpiration; Photosynthesis; Photochemical efficiency; Water use; Viability
Abstract/Contents:"This study was designed to investigate differential responses of hybrids from Texas bluegrass (Poa arachnifera Torr.) x Kentucky bluegrass (Poa pratensis L.) (KBG) and KBG genotypes to drought and heat stress. Plants of two hybrids, '845' and 'BDF', and two KBG genotypes ('Midnight' and 'C-74') were grown under optimal temperature (22/18 °C) and well-watered (control) or unwatered (drought) or superoptimal temperatures (35/30 °C; heat stress) conditions for 35 days in growth chambers. Under optimal conditions, the two hybrids and two KBG genotypes were not significantly different in turf quality, leaf photochemical efficiency expressed as chlorophyll fluorescence ratio (Fv/Fm), leaf net photosynthetic rate (Pn), transpiration rate, water use efficiency (WUE), root dry matter, or root viability. The results suggest that the interspecific hybridization resulted in similar growth and physiological traits in the hybrid bluegrass as in a turf-type species under optimal temperature and irrigation regimes. Under drought stress, all these parameters were comparable to those for KBG 'Midnight', but significantly higher than the corresponding parameters for KBG 'C-74'. Under heat stress, both hybrids had significantly higher turf quality, Fv/Fm, Pn, transpiration rate, WUE, root dry weight in deeper soil depth (40 to 60 cm), and root viability in the upper 40-cm layer compared with both KBG genotypes. These results suggested that hybrid bluegrass exhibited improvement in drought and heat tolerance, particularly in comparison with KBG 'C-74', but to a great extent for heat tolerance. The maintenance of higher transpiration and photosynthesis, WUE, and root viability was associated with the improvement in heat tolerance in hybrid bluegrass."
Language:English
References:24
See Also:Other items relating to: Summertime Blues

Other items relating to: Disasters - Drought
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Abraham, E. M,, W. A. Meyer, S. A. Bonos, and B. Huang. 2008. Differential responses of hybrid bluegrass and Kentucky bluegrass to drought and heat stress. HortScience. 43(7):p. 2191-2195.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=144557
If there are problems with this record, send us feedback about record 144557.
Choices for finding the above item:
DOI: 10.21273/HORTSCI.43.7.2191
Web URL(s):
https://journals.ashs.org/hortsci/view/journals/hortsci/43/7/article-p2191.xml?rskey=9BlgIQ
    Last checked: 11/21/2019
    Requires: PDF Reader
Find Item @ MSU
MSU catalog number: b2217685a
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)