El-Bialy Said M, El-Mahrouk Mohammed E, Elesawy Taha, Omara Alaa El-Dein, Elbehiry Fathy, El-Ramady Hassan, Áron Béni, Prokisch József, Brevik Eric C, Solberg Svein Ø
Soil and Water Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt.
Horticulture Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt.
Plants (Basel). 2023 Jan 9;12(2):302. doi: 10.3390/plants12020302.
Strawberry production presents special challenges due the plants' shallow roots. The rooting stage of strawberry is a crucial period in the production of this important crop. Several amendments have been applied to support the growth and production of strawberry, particularly fertilizers, to overcome rooting problems. Therefore, the current investigation was carried out to evaluate the application of biological nanofertilizers in promoting strawberry rooting. The treatments included applying two different nanofertilizers produced biologically, nano-selenium (i.e., 25, 50, 75, and 100 mg L) and nano-copper (i.e., 50 and 100 mg L), plus a control (untreated seedlings). The rooting of strawberry seedlings was investigated by measuring the vegetative growth parameters (root weight, seedling weight, seedling length, and number of leaves), plant enzymatic antioxidants (catalase, peroxidase, and polyphenol oxidase activity), and chlorophyll content and its fluorescence and by evaluating the nutritional status (content of nutrients in the fruit and their uptake). The results showed that the applied nanofertilizers improved the growth, photosynthetic pigments, antioxidant content, and nutritional status of the seedlings compared to the control. A high significant increase in nutrient contents reached to more than 14-fold, 6-fold, 5-folf, and 4-fold for Cu, Mn, N, and Se contents, respectively, due to the applied nanofertilizers compared with the control. The result was related to the biological roles of both Se and CuO in activating the many plant enzymes. Comparing the Se with the CuO nanofertilizer, Cu had the strongest effect, which was shown in the higher values in all studied properties. This study showed that nanofertilizers are useful to stimulate strawberry seedling growth and most likely would also be beneficial for other horticultural crops. In general, the applied 100 ppm of biological nano-Se or nano-CuO might achieve the best growth of strawberry seedlings under growth conditions in greenhouses compared to the control. Along with the economic dimension, the ecological dimension of biological nanofertilizers still needs more investigation.
由于草莓植株根系浅，其生产面临特殊挑战。草莓的生根阶段是这种重要作物生产中的关键时期。人们已施用了多种改良剂来支持草莓的生长和生产，尤其是肥料，以解决生根问题。因此，开展了本次研究以评估生物纳米肥料在促进草莓生根方面的应用。处理措施包括施用两种生物生产的不同纳米肥料，即纳米硒（即25、50、75和100毫克/升）和纳米铜（即50和100毫克/升），外加一个对照（未处理的幼苗）。通过测量营养生长参数（根重、幼苗重量、幼苗长度和叶片数量）、植物酶促抗氧化剂（过氧化氢酶、过氧化物酶和多酚氧化酶活性）、叶绿素含量及其荧光，并评估营养状况（果实中养分含量及其吸收情况）来研究草莓幼苗的生根情况。结果表明，与对照相比，施用的纳米肥料改善了幼苗的生长、光合色素、抗氧化剂含量和营养状况。与对照相比，由于施用了纳米肥料，铜、锰、氮和硒含量分别显著提高了14倍以上、6倍、5倍和4倍。这一结果与硒和氧化铜在激活多种植物酶方面的生物学作用有关。将纳米硒与纳米氧化铜肥料进行比较，铜的效果最强，这在所有研究特性的较高值中都有所体现。本研究表明，纳米肥料有助于促进草莓幼苗生长，很可能对其他园艺作物也有益。总体而言，与对照相比，在温室生长条件下，施用100 ppm的生物纳米硒或纳米氧化铜可能使草莓幼苗实现最佳生长。除了经济层面，生物纳米肥料的生态层面仍需更多研究。
