Cultivation of <I>Brassica rapa</I> L. subsp. <I>nipposinica</I> plants at the multi circle hydroponic installation with help of natural immunomodulators

Abstract

Relevance. Modern vegetable production in greenhouses is based on high tech-advantageous, such as vertical hydroponic technology. Increasing of vertical hydroponic market is conditioned with ensuring the food security of states in conditions instability of food deliveries due to violations of traditional logistic connections. The program of vertical tomato hydroponics was developed and used in practice at the FSBSI FSVC in 2010-2020. Productivity potential of Brassica rapa L. subsp. nipposinica cultivated at vertical hydroponic installation have been studied in connection with the spread of consumption of fresh greens and “yellow-green” vegetables.The goal of the study was: the productivity characteristics and analysis of biochemical composition Brassica rapa L. subsp. nipposinica cultivated at the five-circle vertical hydroponic installation with help of natural immunomodulators.Materials and methods. Materials of study: seeds and leaves (rosette of leaves) from 2 varieties of Brassica rapa L. subsp. nipposinica – Japanese variety Salad Mizuna and new variety Salut Jubileiu (originated from FSBSI FSVC); immune modulators – flavonoid glycoside linarozide and steroid glycosides moldstim and trigonellozide.Methods. Seed treatment with 0,005%-water solutions of immune modulators; cultivation plants Brassica rapa L. subsp. nipposinica at the five-circle vertical hydroponic construction; analytical methods: determination of dry meter; determination the sum of antioxidants in leaves of Brassica rapa L. subsp. nipposinica; biometry; statistical methods: one-factorial dispersion analysis and two-factorial dispersion analysis.Results. Possibility of Brassica rapa L. subsp. nipposinica plants cultivation at multi circle hydroponic installations was established by authors. Seed treatment with water solutions of immune modulators wasn’t influence on seedlings appearing (the quality of seeds was very high -99-100%). Height of plant (of rosette) the variety Mizuna was increased as the reaction on the seed treatment, but the weight of plants wasn’t change. Salut Jubileiu variety reacted with increasing the common weight of plants. Number of leaves was increased. The content of dry matter in leaves didn’t change, but the sum content of antioxidants is rise significantly after seed treatment of immune modulators. The conclusion has been made: applying of immune modulators from glycosides class could to increase the productivity, vitamin value and safety cultivation of Brassica rapa L. subsp. nipposinica plants at multi circle hydroponics installation.