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首页> 外文期刊>Environmental and experimental botany >Macronutrients and trace elements in rye and wheat: similarities and differences in uptake and relationships between elements.
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Macronutrients and trace elements in rye and wheat: similarities and differences in uptake and relationships between elements.

机译:黑麦和小麦中的大量营养素和微量元素:摄取的相似性和差异以及元素之间的关系。

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摘要

The present study was based on the hypothesis that differential uptake of various elements by similar plant species - wheat and rye - may be explained by the fact that these plants belong to different taxonomic groups. Greenhouse pot experiments were carried out to study similarities and differences in the behaviour of 30 macro- and trace elements in roots, leaves and seeds of wheat and rye. Leaves and seeds of the plant species accumulated many elements differently than roots. Although rye and wheat were grown simultaneously and under the same conditions, they demonstrated different uptake of various nutrients and trace elements. Correlations between concentrations of Ba, Cd, Co, Cs, Mo, Ni, and Sb in roots and leaves of wheat and rye were similar for both plants: they were statistically significant and positive. The correlation coefficients were 0.63 and 0.91 (Ba), 0.68 and 0.60 (Cd), 0.82 and 0.66 (Co), 0.65 and 0.72 (Cs), 0.75 and 0.53 (Mo), 0.84 and 0.49 (Ni), and 0.69 and 0.75 (Sb) in rye and wheat, respectively. We may assume that these elements were translocated within the plants in a similar way. However, relationships between many other elements in the root-leaf system were different in wheat and in rye. Ratios of essential nutrients (K/Na, Ca/Mg, Ca/Sr, Fe/Mn) were also different for these two plants. The most significant differences between wheat and rye were observed for K/Na ratios. For example, the K/Na ratio was 3.2 times higher in roots of rye than in roots of wheat, 2.7 times higher in rye leaves compared to leaves of wheat, and 1.8 times less in rye seeds than in seeds of wheat. Principal component analysis performed on the basis of element concentrations in the plants showed that leaves of the two plant species were well separated into different groups: leaves of rye and leaves of wheat. The same separation was observed for seeds of the plants. On the other hand, despite significant differences between concentrations of many elements in roots of rye and wheat, separation of roots of the plants into different groups was less distinct. The results indicate that data on concentrations of elements in different plant parts, relationships between elements, and nutrient ratios might provide additional information on plant classification and serve as a specific indicator of the plant taxonomy.
机译:本研究基于这样的假设,即类似植物物种(小麦和黑麦)对各种元素的差异吸收可能是由于这些植物属于不同的生物分类组这一事实来解释的。进行温室盆栽实验以研究小麦和黑麦根,叶和种子中30种宏观和微量元素的行为的异同。植物物种的叶子和种子积累的元素与根不同。尽管黑麦和小麦是在相同条件下同时生长的,但它们对各种养分和微量元素的吸收不同。两种植物的小麦和黑麦根和叶中Ba,Cd,Co,Cs,Mo,Ni和Sb的浓度之间的相关性相似:它们在统计学上均显着且为正。相关系数分别为0.63和0.91(Ba),0.68和0.60(Cd),0.82和0.66(Co),0.65和0.72(Cs),0.75和0.53(Mo),0.84和0.49(Ni),0.69和0.75 (Sb)分别在黑麦和小麦中。我们可以假设这些元素以类似的方式在植物内转移。但是,小麦和黑麦中根叶系统中许多其他元素之间的关系是不同的。这两种植物的必需养分比(钾/钠,钙/镁,钙/锶,铁/锰)也不同。观察到小麦和黑麦之间最显着的钾/钠比差异。例如,黑麦根中的K / Na比小麦根高3.2倍,黑麦叶中的K / Na比小麦叶高2.7倍,黑麦种子中的K / Na比小麦种子低1.8倍。根据植物中元素的含量进行的主成分分析表明,两种植物的叶片被很好地分为不同的组:黑麦叶片和小麦叶片。对于植物种子观察到相同的分离。另一方面,尽管黑麦和小麦的根中许多元素的浓度之间存在显着差异,但将植物根分为不同组的区别并不明显。结果表明,有关不同植物部位中元素的浓度,元素之间的关系以及养分比的数据可能会提供有关植物分类的其他信息,并可以作为植物分类学的特定指标。

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