Artemisia species and radish demonstrate intensive allelopathic properties and high ability to hyperaccumulate heavy metals, but their interaction has not been studied up to date. In a pot experiment, the relationship between wormwood (A. scoparia L.) and radish grown individually or intercropped, without and with Pb(NO3)2 supply, was investigated. The intercropping had significant effects in both species, as a consequence of metal allelopathy. Radish showed decrease of root biomass (1.75- fold), Fe, Mn and Zn content (2-fold), Cu level (5.4-fold), and a 1.59-fold Pb increase in the leaves. In wormwood, a 1.75-fold increase of root biomass, as well as a 7.2- and 2.8-fold increase of root and leaf Fe content, respectively, were recorded. A. scoparia, the most Pb tolerant out of the 11 Artemisia species investigated, accumulated 6.6 and 9.9 times more Pb in leaves and roots respectively, compared to radish, under Pb supply which encouraged the growth of both plants. The intercropping under Pb supply induced a three-fold decrease of radish root biomass and 7.8-fold decrease of Pb content. Changes in plant antioxidant activity were recorded only under Pb supply and were not related to radish-wormwood interaction: the leaf phenolics content and antioxidant activity displayed 1.4- and 2- fold increases, respectively, in radish, and 1.4- and 1.6-fold decreases in wormwood. Synchronous changes in elemental composition of wormwood and radish in intercropping conditions, without or under Pb supply, suggest the significance of this phenomenon in plants interaction and arise high prospects of A. scoparia utilization to tackle weeds and soil Pb pollution
Relevance. Photosynthetic seedlings, as a model object, are interesting both in the study of nutritional value and the species response of a plant organism to the cultivation.Material and methods. The study was carried out on the basis of the laboratory analytical department of the FSBSI FSVC. The material of the research was sprouts of Brassica chinensis L., cv. Vesnyanka; Brassica oleraceae L. var. italica Plenck, cv. Tonus; Brassica oleracea L. convar. acephala DC., cv. Malinovka; Brassica oleracea var. gongylodes L., hybrid F1 Sonata and cv. Venskaya Belaya 1350; Brassica oleracea L. convar. capitata (L.) Alef. var. capitata L. f. rubra (L.) Thell., cv. Gako 741. The seeds of the 2018 harvest were germinated in filter paper cassettes using distilled water. The cassettes with seeds were placed in a thermostat under constant illumination and a temperature of 25°C. They have been germinated for 8 days, after which a biochemical analysis of the samples was carried out.Results. It was found out that the total content of water-soluble antioxidants in the studied of cabbage crops was in the range of concentrations from 3.58-4.57 mg-eq HA/g (wet weight). According to this indicator of 8-day-old seedlings, red cabbage variety Gako 741 was distinguished by the maximum values. The total content of antioxidants in the alcoholic extract ranged from 21.24 to 28.23 mg-eq HA/g (dry weight). The content of polyphenols – in the concentration range of 16.39-24.94 mg-eq of HA/g (dry weight). As a result of the research, direct correlations of the studied characteristics were revealed. A high correlation was shown between the content of water-soluble antioxidants and dry matter (r=0.72...0.98) and between the content of carotenoids and chlorophylls (r=0.98...0. 99).
Установлены требования к микрозелени проростков овощного гороха, предназначенных для потребления в свежем виде, выращенных на субстрате или субстратах, не содержащих элементов питания. Проростки проращивают 14 суток, срезают ростки на высоте 10 15 см, транспортируют всеми видами транспорта при условии обеспечения сохранности продукции и в соответствии с правилами перевозок скоропортящихся грузов.The requirements for microgreens of vegetable pea seedlings intended for fresh consumption are established, grown on the substrate or does not contain elements of the supply substrates. Sprouts of vegetable peas germinate within 14 days. Cut the shoots at a height of 10 15 cm then if seedlings of vegetable pea transport with all models of transport while ensuring product integrity and in accordance with the rules of transportation of perishable produce.
Цель исследований: изучение коллекционного питомника лука репчатого по основным хозяйственно ценным признакам в условиях Астраханской области. Исследования проводились в условиях вегетации 20172018 годов в Черноярском районе, на опытном участке Прикаспийского НИИ аридного земледелия, расположенном в северо-западной части Астраханской области. Почвы на участках изучаемой зоны светло-каштановые, разной степени солонцеватости, занимают доминирующее положение в почвенном покрове рассматриваемой территории. В целом, погодные условия были неблагоприятными для выращивания лука репчатого. Опыты были заложены в соответствии с общепринятыми методиками согласно агротехнике лука репчатого в условиях Астраханской области. Для проведения исследований в 20172018 годах были использованы образцы из генетической коллекции ВНИИГР имени Н.И. Вавилова, а также образцы, отобранные в предыдущие годы. Коллекционный питомник лука репчатого был представлен 50 образцами, 26 из них выделились в годы исследований. Посев семян коллекционного питомника лука репчатого проводили в один срок: 3 мая (во все годы исследований). Получены результаты по выделившимся образцам коллекционного питомника лука репчатого по фенологическим фазам. Массовые всходы были отмечены на 1222 сутки от посева. Фенологическая фаза начало формирования луковиц была отмечена на 6168 сутки от посева. К раннеспелым образцам лука репчатого в коллекционном питомнике можно отнести: Сорокозубку, Suttons improved, Red mom, Nothern. Среднеспелыми образцами за годы изучения себя показали: Red Extra, Марковский, Vertus, Selfed, Jetset, Sillani Sargo. По основным хозяйственно ценным признакам выделились 15 коллекционных образцов. По выделившимся образцам лука репчатого средняя урожайность отмечена у пяти образцов: Maravanka, Алмадон, Southport, Selfed, Местный (Грузия), средняя масса товарной луковицы составила 151,6 г. По товарной урожайности выделилось три коллекционных образца: Zillani, Suttons improved, Encore. У сортообразца Марковский было отмечено 70 товарных вызревших луковиц. Максимальная масса товарной луковицы 206,0 г была отмечена у коллекционного образца Cebola.The purpose of the present research was: to study the collection nursery of bulb onions on the main economic valuable features in the conditions of the Astrakhan region. The research was carried out in the conditions of the 20172018 vegetation in the Chernoyar district, on the experimental section of the Caspian research Institute of Arid agriculture, located in the north-western part of the Astrakhan region. Soils on the areas of the studied zone light chestnut, different degree of salt content, occupy a dominant position in the soil cover of the considered territory. On the whole, weather conditions were unfavourable for the cultivation of bulb onions. The experiments were laid down in accordance with the generally accepted methodologies according to bulb onions agricultural machinery in the Astrakhan region. For research in 20172018 samples from the genetic collection VIR named after N.I. Vavilov were used, as well as samples taken in previous years. The collection nursery of bulb onions was represented by 50 samples, 26 of them stood out during the years of research. Sowing of seeds of collector nursery of bulb onions was carried out in one term: on May 3 (in all years of research). Results were obtained for selected samples of the collection nursery of onion by phenological phases. Mass shoots were observed on 1222 days from sowing. The phenological phase the beginning of the formation of the follicles was noted in 61 to 68 days from sowing. Early-maturing examples of onions in the collection nursery include: Sorokozubka, Suttons improved, Red mom, Northern. During the years of study, red Extra, Markovsky, Vertus, Selfed, Jetset, and Sillani Sargo showed themselves to be the middle-aged samples. According to the main economically valuable features, 15 collection samples were distinguished. According to the selected samples of onion, the average yield was noted in five samples: Maravanka, Almadon, Southport, Selfed, Local (Georgia), the average weight of the commodity bulb was 151.6 g. Аccording to the commodity yield, three collection samples were distinguished: Zillani, Suttons improved, Encore. In the Markovsky variety, 70 of commercially Mature bulbs were observed. The maximum mass of a commodity bulb of 206.0 g was noted in the collection sample of Cebola.
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