Full TGIF Record # 63099
Item 1 of 1
Publication Type:
Content Type:Abstract or Summary only
Author(s):Jiang, Y. W.; Huang, B. R.
Author Affiliation:Kansas State University
Title:Interactive effects of drought and heat stress on Kentucky bluegrass
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Meeting Info.:Salt Lake City, UT: October 31 - November 4, 1999
Source:1999 Annual Meeting Abstracts [ASA/CSSA/SSSA]. Vol. 91, 1999, p. 128.
Publishing Information:[Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
# of Pages:1
Keywords:TIC Keywords: Drought; Heat stress; Poa pratensis; Interactions; Physiological responses; Photosynthesis; Root weight; Dry weight
Abstract/Contents:"Physiological responses of Kentucky bluegrass (Poa pratensis L.) to drought or heat (HT), simultaneous drought and HT, and HT following drought were studied. The decline in canopy photosynthetic rate (Pn) was more severe under HT than under drought within 12 d of treatment (DOT). The reduction in leaf photochemical efficiency (Fv/Fm) was more severe under drought than under HT at 20 DOT. Simultaneous drought and HT stress caused more dramatic reductions in Pn and Fv/Fm than HT or drought alone, starting at 3 and 9 DOT, respectively. Reduction in root dry weight was more severe under HT than under drought, particularly in the top 20 cm soil. During subsequent heat stress, plants previously exposed to drought maintained higher water status, stomatal conductance, transpiration rate and had significantly higher Pn and root dry weight than those previously grown under well-watered conditions."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jiang, Y. W., and B. R. Huang. 1999. Interactive effects of drought and heat stress on Kentucky bluegrass. Annu. Meet. Abstr. 91:p. 128.
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