Growth response of four turfgrass species to salinity

被引:119
作者
Alshammary, SF
Qian, YL
Wallner, SJ
机构
[1] King Abdulaziz City Sci & Technol, Nat Resources & Environm Res Inst, Riyadh 11442, Saudi Arabia
[2] Colorado State Univ, Dept Hort & Landscape Architecture, Ft Collins, CO 80523 USA
关键词
salt tolerance; water salinity; turfgrass; shoot/root growth; salt glands;
D O I
10.1016/j.agwat.2003.11.002
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The need for salinity tolerant turfgrasses is increasing because of the increased use of effluent or other low quality waters for turfgrass irrigation. Greenhouse container and hydroponic experiments were conducted to determine the relative salinity tolerance and growth responses of 'Challenger' Kentucky bluegrass (Poa pratensis L.) (KBG), 'Arid' tall fescue (Festuca arundinacea Schreb) (TF), 'Fults' alkaligrass (Puccinellia distans (L.) Parl.) (AG), and a saltgrass (Distichlis spicata (Tort.) Beetle) collection (SG). In the container experiments, irrigation waters of different salinity levels were applied to experimental plants grown in plastic pots filled with a mix of sand and Isolite. The results indicated that KBG, TF, AG, and SG experienced a 50% shoot growth reduction at 4.9, 10.0, 20.0, and 34.9 dS m, respectively, and a 50% root growth reduction at 5.8, 19.6, 24.9 and 41.0 dS m(-1), respectively. In the hydroponic experiment, grasses were grown in saline solution at 2.0. 4.7. 9.4, 14.1, 18.8, and 23.5 dS m(-1). Kentucky bluegrass, TF, AG, and SG experienced a 50% shoot growth reduction at 5.5, 14.2, 23.0, and 34.5 dS m(-1), respectively, and a 50% root growth reduction at 7.9, 21.5, 30.4 and 40.8 dS m(-1), respectively. Root to shoot ratio of KBG remained constant, whereas those of TF, AG, and SG increased at all salinity levels. Salinity caused root cortex cells to collapse, in KBG at 14.1 dS m(-1) and in TF at 23.5 dS m(-1). Alkaligrass and SG only had a few cell collapses even at 23.5 dS m(-1) Bi-cellular salt glands were observed only on leaves of SG. The ranking for salinity tolerance of selected grasses was: SG > AG > TF > KBG. Salt glands present in SG, root growth stimulation of SG and AG, and maintenance of relatively high root to shoot ratio in TF are apparent adaptive mechanisms exhibited by these grasses for salinity tolerance. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:97 / 111
页数:15
相关论文
共 48 条
[1]   FACTORS INFLUENCING VASCULAR PLANT ZONATION IN NORTH-CAROLINA SALT MARSHES [J].
ADAMS, DA .
ECOLOGY, 1963, 44 (03) :445-+
[2]  
*AZ DEP WAT RES, 1995, MOD 2 MAN PLAN 1990
[3]   GROWTH OF SUDAN AND TALL FESCUE GRASSES AS INFLUENCED BY IRRIGATION WATER SALINITY AND LEACHING FRACTION [J].
BOWER, CA ;
OGATA, G ;
TUCKER, JM .
AGRONOMY JOURNAL, 1970, 62 (06) :793-&
[4]  
*CA STAT WAT RES C, 1993, PORT COL ACT PROV RE
[5]   MECHANISMS OF SALINITY TOLERANCE IN PLANTS [J].
CHEESEMAN, JM .
PLANT PHYSIOLOGY, 1988, 87 (03) :547-550
[6]   Turfgrass quality, growth, and water use influenced by salinity and water stress [J].
Dean, DE ;
Devitt, DA ;
Verchick, LS ;
Morris, RL .
AGRONOMY JOURNAL, 1996, 88 (05) :844-849
[7]  
Dudeck A. E., 1993, INT TURFGRASS SOC RE, V7, P680
[8]   EFFECTS OF SODIUM-CHLORIDE ON CYNODON TURFGRASSES [J].
DUDECK, AE ;
SINGH, S ;
GIORDANO, CE ;
NELL, TA ;
MCCONNELL, DB .
AGRONOMY JOURNAL, 1983, 75 (06) :927-930
[9]   ION RELATIONS OF PLANTS UNDER DROUGHT AND SALINITY [J].
FLOWERS, TJ ;
YEO, AR .
AUSTRALIAN JOURNAL OF PLANT PHYSIOLOGY, 1986, 13 (01) :75-91
[10]  
FRANCOIS LE, 1988, HORTSCIENCE, V23, P706