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首页> 外文期刊>Research journal of environmental and earth sciences >Salinity Effects on Growth Attributes Mineral Uptake, Forage Quality and Tannin Contents of Acacia saligna (Labill.) H. Wendl
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Salinity Effects on Growth Attributes Mineral Uptake, Forage Quality and Tannin Contents of Acacia saligna (Labill.) H. Wendl

机译：盐度对金合欢生长的影响归因于矿物质吸收，饲草质量和单宁含量。

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摘要

A greenhouse experiment was conducted at the Agricultural Research Station, King Abdulaziz University to examine the effects of salinity on biomass production, physiological responses, mineral uptake, leaves quality (protein, fiber, ash) and tannin content. A 4 months old seedlings were exposed to an increasing salt concentrations: (Bore well water, 7, 9 and 12 dS/m, respectively). Physiological traits Specific Leaf Area (SLA), Leaf Dry Matter Content (LDMC) and Relative Water Content (RWC)) were measured at different growth development. Leaves minerals (N, P, Na, Ca, K, Mg), protein, fiber and ash contents were analyzed. Condensed tannins were assayed by vanillin HCI method. The results showed that salinity resulted in reduced biomass production and growth in response to lower SLA, lower RWC and higher LDMC with increasing salt concentrations. The salts accumulation in soil media resulted in higher Na associated with lower (N, P, Ca, K, Mg) contents in leaves, while tannin was increased with increasing salt concentration. Protein, ash and fiber contents were significantly differed among salt treatments. Despite the effects of salt stress on growth, the relatively good performance of the seedlings under all levels of salt concentrations indicates that this species has adaptive mechanisms to withstand relatively high levels of salinity.
机译：阿卜杜勒阿齐兹国王大学农业研究站进行了温室试验，以研究盐分对生物量生产，生理反应，矿物质吸收，叶片质量（蛋白质，纤维，灰分）和单宁含量的影响。 4个月大的幼苗暴露于增加的盐浓度下：（分别注入井水7、9和12 dS / m）。在不同的生长发育过程中测量其生理特性比叶面积（SLA），叶干物质含量（LDMC）和相对水分含量（RWC）。分析了叶片中的矿物质（氮，磷，钠，钙，钾，镁），蛋白质，纤维和灰分。缩合单宁采用香草醛盐酸盐法测定。结果表明，随着盐浓度的升高，盐度降低了SLA，RWC和LDMC降低，从而降低了生物量的产生和生长。盐分在土壤介质中的积累导致较高的Na含量与叶片中较低的（N，P，Ca，K，Mg）含量相关，而单宁随着盐浓度的升高而增加。盐处理之间的蛋白质，灰分和纤维含量显着不同。尽管盐胁迫对生长有影响，但在所有盐浓度水平下，幼苗的性能都相对较好，表明该树种具有适应性机制，可以承受相对较高的盐度水平。

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