Mycorrhizal influence on fruit yield and mineral content of tomato grown under salt stress
Mycorrhizal influence on fruit yield and mineral content of tomato grown under salt stress
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DOI：
10.1081/pln-100106983
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发表时间：
2001-01-01
影响因子：
2.1
通讯作者：
Hammad, R
中科院分区：
文献类型：
--
作者：
Al-Karaki, GN;Hammad, R
番茄（Lycopersicon esculentum Mill.）已知在盐碱土中生长的植物产量会降低。以耐盐和盐敏感番茄品种为材料，研究了不同盐处理下接种丛枝菌根真菌（AMF）对番茄产量和矿质元素含量的影响。NaCl和CaCl 2以等摩尔比添加到灌溉水中的土壤中，得到ECe值为1.4（非胁迫）和4.9 dS m（-1）（盐胁迫）。使用未灭菌的低磷（P）（粉质粘土）土壤-砂螨使植物在温室中生长。无论是盐胁迫还是非盐胁迫，AMF都能在根中定植，但接种AMF的根中AMF的定植程度高于未接种AMF的根。耐盐品种‘佩罗’的AMF根定殖率普遍高于盐敏感品种‘巴哈’。在非胁迫条件下生长的植物的地上部干物质（DM）产量、果实鲜产量和AMF定殖率高于在盐胁迫条件下生长的植物。芽DM和果实鲜产量较高，AMF接种比未接种的植物生长或不受盐胁迫，佩罗一般有较高的果实鲜产量单株和果实重量比Eschericha，但这些差异只显着的果实重量在盐胁迫条件下生长的unioculated植物。由于AMF接种的果实鲜重产量的提高是26和23%，在非胁迫和28和46%，盐胁迫处理下的Pello和Eschericha，分别。对于这两个品种，果实中的P，钾（K），锌（Zn），铜（Cu），铁（Fe）的含量较高的AMF接种相比，未接种的植物生长在非胁迫和盐胁迫条件下。果实钠浓度低于AMF接种比未接种的植物生长在盐胁迫条件下。在盐胁迫条件下，由于AMF接种的P，K，Zn，Cu和Fe的收购的增强是更明显的比在Pello品种在Eschericha。结果表明，接种AMF的植株比不接种AMF的植株具有更强的耐盐性。
Tomato (Lycopersicon esculentum Mill.} yields are known to decrease for plants grown in saline soils. This study was conducted to determine the effects of arbuscular mycorrhizal fungi (AMF) inoculation on fruit yield and mineral content of salt-tolerant and salt-sensitive tomato cultivars grown with varied levels of salt. NaCl and CaCl2 were added to soil in the irrigation water in equal molar ratios to give ECe values of 1.4 (non-stressed) and 4.9 dS m(-1) (salt stressed). Plants were grown in a greenhouse using unsterilized, low phosphorus (P) (silty clay} soil-sand mite. Mycorrhizal root colonization occurred whether cultivars were salt stressed or nonstressed, but the extent of AMF root colonization was higher in AMF inoculated than uninoculated plants. The salt tolerant cultivar 'Pello' generally had higher AMF root colonization than the salt sensitive cultivar 'Marriha'. Shoot dry matter (DM) yield, fruit fresh yield, and AMF colonization were higher for plants grown under nonstressed than for plants grown under salt stressed conditions. Shoot DM and fruit fresh yields were higher in AMF inoculated than uninoculated plants grown with or without salt stress, Pello generally had higher fruit fresh yield per plant and fruit weight than Marriha, but these differences were only significant for fruit weight in unioculated plants grown under salt stressed conditions. The enhancement in fruit fresh yield due to AMF inoculation was 26 and 23% under nonstressed and 28 and 46% under salt stressed treatments for Pello and Marriha, respectively. For both cultivars, fruit contents of P, potassium (K), zinc (Zn), copper (Cu), and iron (Fe) were higher in AMF inoculated compared with uninoculated plants grown under nonstressed and salt stressed conditions. Fruit Na concentrations were lower in AMF inoculated than uninoculated plants grown under salt stressed conditions. The enhancement in P, K, Zn, Cu, and Fe acquisition due to AMF inoculation was more pronounced in Marriha than in Pello cultivar under salt stressed conditions. The results of this study indicated that AMF inoculated plants had greater tolerance to salt stress than unioculated plants.