Ameliorating effects of Ca(NO3)2 on growth, mineral uptake and photosynthesis of NaCl-stressed guava seedlings (Psidium guajava']java L.)

被引:54
作者
Ebert, G
Eberle, J
Ali-Dinar, H
Lüdders, P
机构
[1] Humboldt Univ, Inst Crop Sci, Dept Fruit Sci, D-14195 Berlin, Germany
[2] Shambat Agr Res Stn, Hort Res Stn, Khartoum N, Sudan
关键词
calcium; chloride; chlorophyll; NaCl; potassium; salinity; sodium;
D O I
10.1016/S0304-4238(01)00325-9
中图分类号
S6 [园艺];
学科分类号
0902 ;
摘要
The effect of varying Ca(NO3)(2) Supply (0, 5, 10 and 15 mM) on growth, mineral uptake, leaf chlorophyll concentration and photosynthesis of NaCl-stressed (30 and 60 MM NaCl) guava seedlings (Psidium guajava L.) was investigated. NaCl caused severe leaf damage (necrotic leaf margins). Dry matter production was lower in the 60 mM treatment than in the 30 mM NaCl variant. Addition of Ca(NO3)(2) stimulated shoot growth more than root growth. Ca(NO3)(2) Supply increased leaf K+ and Ca2+ concentration, whereas the Na+ transport to the leaves was inhibited. There was a strong increase in the K+/Na+ ratio in leaves of Ca(NO3)(2)-treated seedlings. Leaf Cl- content was decreased by supplemental Ca(NO3)(2) but Cl- was increased in shoots and roots. N concentration in all parts of the seedlings increased with enhanced Ca(NO3)(2) supply. Leaf chlorophyll concentration and photosynthesis rate were low in NaCl-treated plants, but both factors were enhanced by 10 mM of Ca(NO3)(2). In general, moderate Ca(NO3)(2) Supply (10 mm) had optimal effects on growth and metabolism of NaCl-stressed guava seedlings. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:125 / 135
页数:11
相关论文
共 28 条
[1]  
Ali-Dinar HM, 1999, GARTENBAUWISSENSCHAF, V64, P54
[2]  
Ali-Dinar HM, 1998, J APPL BOT-ANGEW BOT, V72, P56
[3]   SALINITY AND SHADING EFFECTS ON LEAF WATER RELATIONS AND IONIC COMPOSITION OF STRAWBERRY PLANTS GROWN ON ROCKWOOL [J].
AWANG, YB ;
ATHERTON, JG .
JOURNAL OF HORTICULTURAL SCIENCE, 1994, 69 (02) :377-383
[4]   SALINITY-CALCIUM INTERACTIONS ON GROWTH AND IONIC CONCENTRATION OF CITRUS PLANTS [J].
BANULS, J ;
LEGAZ, F ;
PRIMOMILLO, E .
PLANT AND SOIL, 1991, 133 (01) :39-46
[5]  
Bar Y., 1987, Yearbook, South African Avocado Growers' Association, V10, P47
[6]   Polyamines in chloride-stressed Citrus plants: Alleviation of stress by nitrate supplementation via irrigation water [J].
Bar, Y ;
Apelbaum, A ;
Kafkafi, U ;
Goren, R .
JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE, 1996, 121 (03) :507-513
[7]   EFFECTS OF SALINITY ON IONIC CONTENT, WATER RELATIONS AND GAS-EXCHANGE PARAMETERS IN SOME CITRUS SCION ROOTSTOCK COMBINATIONS [J].
BEHBOUDIAN, MH ;
TOROKFALVY, E ;
WALKER, RR .
SCIENTIA HORTICULTURAE, 1986, 28 (1-2) :105-116
[8]   ROLE OF INTERNAL POTASSIUM IN MAINTAINING GROWTH OF CULTURED CITRUS CELLS ON INCREASING NACL AND CACL2 CONCENTRATIONS [J].
BENHAYYIM, G ;
KAFKAFI, U ;
GANMORENEUMANN, R .
PLANT PHYSIOLOGY, 1987, 85 (02) :434-439
[9]  
CERDA A, 1988, J PLANT NUT, V66, P451
[10]   INFLUX OF NA+, K+, AND CA-2+ INTO ROOTS OF SALT-STRESSED COTTON SEEDLINGS - EFFECTS OF SUPPLEMENTAL CA-2+ [J].
CRAMER, GR ;
LYNCH, J ;
LAUCHLI, A ;
EPSTEIN, E .
PLANT PHYSIOLOGY, 1987, 83 (03) :510-516