Agricultural Botany Department, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
Plant Physiology Division, Department of Agricultural Botany, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt.
BMC Plant Biol. 2024 Oct 4;24(1):924. doi: 10.1186/s12870-024-05592-6.
Peace lily (Spathiphyllum wallisii Regel) is an ornamental indoor plant with promising cut flower market, as well as antiviral, pharmacological and ecological potentials. Water deficiency can have sound effects on the growth performance and aesthetic quality of such plant. The aim of this study was to investigate the consequences of zeolite, biochar, and zeo-char loaded nano-nitrogen application on the growth performance and biochemical components of peace lily under water shortage conditions. An experiment was conducted over two consecutive seasons (2021-2022) at the experimental nursery of Ornamental Horticulture Department, Faculty of Agriculture, Cairo University, Giza, Egypt. Soil amendments; zeolite, biochar, and zeo-char loaded nano-nitrogen were prepared and applied to soil before cultivation.
Our results revealed that the new combination treatment (zeo-char loaded nano-N) had an exceeding significant effect on most of the studied parameters. Vegetative traits such as plant height (35.7 and 35.9%), leaf number per plant (73.3 and 52.6%), leaf area (40.2 and 36.4%), stem diameter (28.7 and 27.1%), root number (100 and 43.5%) and length (105.7 and 101.9%) per plant, and fresh weight of leaves (23.2 and 21.6%) were significantly higher than control (commercially recommended dose of NPK) with the application of zeo-char loaded nano-N during the two growing seasons, respectively. Similar significant increments were obtained for some macro- (N, P, K, Mg, Ca) and micro- (Fe, Zn, Mn) elements with the same treatment relative to control. Chlorophyll (18.4%) and total carotenoids (82.9 and 32.6%), total carbohydrates (53.3 and 37.4%), phenolics (54.4 and 86.9%), flavonoids (31.7% and 41.8%) and tannins (69.2 and 50%), in addition to the phytohormone gibberellic acid (GA) followed the same trend with the application of zeo-char loaded nano-N, increasing significantly over control. Leaf histological parameters and anatomical structure were enhanced with the new combination treatment in comparison with control. Antioxidant enzymes (catalase and peroxidase), proline and abscisic acid (ABA) exhibited significant declines with zeo-char loaded nano-N treatment relative to control.
These findings suggest that incorporating soil amendments with nano- nutrients could provide a promising approach towards improving growth performance and quality of ornamental, medicinal and aromatic species under water deficiency conditions.
和平百合（Spathiphyllum wallisii Regel）是一种具有前景的室内观赏花卉，具有抗病毒、药理学和生态潜力。水分不足会对植物的生长性能和美观质量产生显著影响。本研究旨在探讨沸石、生物炭和负载纳米氮的沸石-生物炭对缺水条件下和平百合生长性能和生化成分的影响。该实验在埃及吉萨市开罗大学农业学院观赏园艺系的实验苗圃进行，持续了两个连续的季节（2021-2022 年）。在种植前，准备并向土壤中添加土壤改良剂；沸石、生物炭和负载纳米氮的沸石-生物炭。
我们的结果表明，新的组合处理（负载纳米氮的沸石-生物炭）对大多数研究参数都有显著的影响。营养生长特征，如株高（35.7%和 35.9%）、单株叶片数（73.3%和 52.6%）、叶面积（40.2%和 36.4%）、茎直径（28.7%和 27.1%）、根数量（100%和 43.5%）和长度（105.7%和 101.9%），以及叶片的鲜重（23.2%和 21.6%）在两个生长季节中均显著高于对照（商业推荐的 NPK 用量），同时负载纳米氮的处理也获得了一些宏观（N、P、K、Mg、Ca）和微观（Fe、Zn、Mn）元素的类似显著增量。与对照相比，叶绿素（18.4%）和总类胡萝卜素（82.9%和 32.6%）、总碳水化合物（53.3%和 37.4%）、酚类（54.4%和 86.9%）、类黄酮（31.7%和 41.8%）和单宁（69.2%和 50%）以及植物激素赤霉素（GA）也呈现出相同的趋势，与对照相比，均显著增加。与对照相比，负载纳米氮的处理增加了叶片组织学参数和解剖结构。抗氧化酶（过氧化氢酶和过氧化物酶）、脯氨酸和脱落酸（ABA）的含量显著下降。
这些发现表明，在土壤中添加纳米养分可以为在缺水条件下提高观赏、药用和芳香植物的生长性能和质量提供一种有前途的方法。
