Relevance of tipburn incidence to the competence for Ca acquirement and Ca distributivity in lisianthus [Eustoma grandiflorum (Raf.) Shinn.] cultivars
Relevance of tipburn incidence to the competence for Ca acquirement and Ca distributivity in lisianthus [Eustoma grandiflorum (Raf.) Shinn.] cultivars
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DOI：
10.1016/j.scienta.2018.10.043
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发表时间：
2019-02-27
影响因子：
4.3
通讯作者：
Watanabe, Hitoshi
中科院分区：
文献类型：
--
作者：
Kuronuma, Takanori;Watanabe, Yua;Watanabe, Hitoshi
蒂伯病是几种藤本植物繁殖过程中可能发生的严重问题。[Shinn.]品种。然而，其发病率尚未确定。此外，很少有研究涉及钙(Ca)获取能力与烧伤发生之间的关系。比较了14个莲花品种的尖烧发病率和严重程度、植株生长速率、钙获取能力(RGR(Ca))和钙的分配率。文中还讨论了这些性状对烧伤发生的影响。为了量化不同品种对钙的需求能力，对植株生长和钙含量进行了综合分析。结果表明，不同莲花品种间的病情严重程度和发病率存在显著差异。然而，这些差异与植物生长速率和钙的获取能力均不显著相关。相反，与上部叶尖钙分配相关的参数与尖烧严重程度和发病率显著相关。由此可见，蒜头烧的发生主要是由于植株不能将足够数量的钙运输到上部叶尖所致。在莲花品种中，CA获得能力(RGR(Ca))与尖烧严重程度和发病率之间没有显著的相关性。然而，基于植物钙含量的生长分析量化了植物的钙获取能力(RGR(Ca))，并建立了生理(SAR(Ca))和形态性状(RMR和L(Ca)(-1))与RGR(Ca)之间的相关性。这种分析方法是理解处于缺钙风险植物的营养经济的新途径。
Tipburn is a severe problem that can occur during the propagation of several lisianthus [Eustoma grandiflorum (Raf.) Shinn.] cultivars. However, its incidence has not yet been established. Moreover, few studies have addressed the association between calcium (Ca) acquirement competence and the occurrence tipburn. The present study compared tipburn incidence and severity, plant growth rate, Ca acquirement competence (RGR(Ca)), and Ca distributivity in 14 lisianthus cultivars. The influence of these traits on the occurrence of tipburn has also been discussed. To quantify Ca acquirement competence for each cultivar, plant growth and Ca content were analyzed together. It was determined that there were significant differences among lisianthus cultivars in terms of tipburn severity and incidence. However, these differences were not significantly correlated with either plant growth rate or Ca acquirement competence. In contrast, the parameters related to Ca distributivity to the upper leaf tips were significantly correlated with tipburn severity and incidence. Therefore, it became clear that the occurrence of tipburn in lisianthus cultivars is caused mainly by the inability of the plant to translocate adequate amounts of Ca to the tips of the upper leaves. Ca acquirement competence (RGR(Ca)) were not significantly associated with tipburn severity and incidence in lisianthus cultivars. Nevertheless, growth analysis based on plant Ca content quantified Ca acquirement competence (RGR(Ca)) and established the relevance of physiological (SAR(Ca)) and morphological traits (RMR and l(Ca)(-1)) and RGR(Ca) This analytical method is a new approach towards understanding the nutrient economy of a plant at risk of deficiency.