Tipburn Incidence and Ca Acquisition and Distribution in Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Cultivars under Different Ca Concentrations in Nutrient Solution
Tipburn Incidence and Ca Acquisition and Distribution in Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Cultivars under Different Ca Concentrations in Nutrient Solution
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DOI：
10.3390/agronomy10020216
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发表时间：
2020-02-01
期刊：
影响因子：
3.7
通讯作者：
Watanabe, Hitoshi
中科院分区：
文献类型：
--
作者：
Kuronuma, Takanori;Ando, Masaya;Watanabe, Hitoshi
钙缺乏症（钙缺乏症）是百叶菊品种生产中的一个主要问题。然而，营养液中不同钙浓度对赤烧发生率和钙获取分布的影响研究较少。因此，为什么某些品种在高钙浓度下表现出倾向性仍不清楚。为了解决这一问题，我们使用了三种百合品种“Azuma-no-Kaori”（AK）、“Celeb Wine”（CW）和“Voyage Yellow”（VY），并比较了营养液中不同钙浓度（低（40 ppm）、中（80 ppm）和高（120 ppm）钙）下的燃烧发生率和钙的获取和分布。随着营养钙浓度的增加，AK和VY的Tipburn严重程度和发生率显著降低；营养钙浓度越高，各器官钙浓度和钙获取能力（RGR(Ca)）越高。相比之下，在所有治疗中，CW的tipburn发生率为100%。在连续栽培中，随着营养钙浓度的增加，大部分器官的钙获取能力和钙浓度均有所增加，但上部叶片尖端的钙浓度在处理间差异不显著。因此，我们的研究结果表明，在充足的钙条件下，植物无法将钙分配到其上部叶片的尖端。
Tipburn (calcium (Ca) deficiency disorder) is a major problem in the production of lisianthus cultivars. However, few studies have investigated the influence of different Ca concentrations in nutrient solution on tipburn incidence and Ca acquisition and distribution. Thus, it remains unclear why some cultivars exhibit tipburn under high Ca concentrations. To address this, we used three lisianthus cultivars 'Azuma-no-Kaori' (AK), 'Celeb Wine' (CW), and 'Voyage Yellow' (VY) and compared tipburn incidence and Ca acquisition and distribution under different Ca concentrations in a nutrient solution (low (40 ppm), moderate (80 ppm), and high (120 ppm) Ca). Tipburn severity and incidence in AK and VY significantly decreased with increasing nutritional Ca concentrations; the Ca concentrations in each organ and Ca acquisition competence (RGR(Ca)) increased at higher nutritional Ca concentrations. In contrast, tipburn incidence in CW was 100% for all treatments. In CW, Ca acquisition competence and Ca concentrations in most organs increased with increasing nutritional Ca concentrations, but the Ca concentrations in the tips of the upper leaves did not differ significantly between treatments. Thus, our results suggest that the cause of tipburn under sufficient Ca conditions is an inability of the plant to distribute Ca to the tips of its upper leaves.