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Plant height and the size of leaf blades are of considerable importance in the cultivation of spice plants in pots, as these parameters are decisive in determining the proper harvest time of such plants. Light is one of the factors affecting to a significant degree the morphogenesis of plants. The goal of this study was to estimate to what extent different light quantities reaching plants can influence their height and leaf area index (LAI) as well as the concentrations of essential oils and chlorophyll in leaves. The experiments were conducted from July to the middle of August 2004 and 2006 in a glasshouse of the Marcelin Experimental Station. The object of the performed investigations included five species of spice plants: dill cv. Ambrozja (Anethum graveolens L.), garden chervil (Anthriscus cerefolium L. Hoffm.), garden rocket (Eruca sativa Lam.) parsley cv. Titan (Petroselinum crispum Mill. subsp. crispum) and salad onion cv. Sprint (Allium cepa L.). The following amounts of light access to plants were assumed: 100% in the treatment without shading and 70 and 60%. After 7, 14, 21 and 28 days from plant emergence, the following measurements were taken: plant height and leaf area, whereas after the last week of vegetation, the content of chlorophyll and essential oils in air-dry leaves was also determined. On the basis of the performed investigations it was found that plants of all the examined species were characterised by the fastest growth and greatest height at 60% access to light. The leaf area index of all experimental plants was also the biggest at the same exposure to light. The highest concentrations of essential oils were determined in the leaves of dill, leaf parsley and chervil when they were cultivated at 60% light access. Differences in the available light quantity failed to affect the relative chlorophyll content in the leaves of parsley and garden rocket. In the case of chervil, leaf chlorophyll was found lower in the treatment with 70% light exposure.
Subject and purpose of work: Community Empowerment in Sustainable Agricultural Development and CSR (Study of spice farmers in Maluku Utara). One of the duties of the nation is to facilitate prosperity for its citizens through development. Such development is pursued by the government to reach economic growth by utilizing all agriculture potentials and by organizing community development. Materials and methods: In this study, the goals are to identify, describe and analyze the empowerment of the spice farmers’ community in Maluku Utara in sustainable agricultural development and CSR. This study is descriptive in nature and uses the qualitative approach, while data analysis relies on the Creswell’s model. Maluku Utara has a resource potential that is needed for sustainable agriculture development and CSR for community welfare. Results: Through empowerment, which involves several stages, such as enlightenment, capacity building, and enforcement, it is possible to improve awareness, capacity, skill and strength of the community to exploit all potentials. The support given to the spice farmers’ community in sustainable agriculture development and CSR is not at the maximum. Despite this support, there are factors constraining community empowerment in sustainable agriculture development and CSR. Conclusions: These constraints may come from community, a very low number of agriculture counselors, natural resource inadequacy, and also weather factors at Maluku Utara, all of which hamper the empowerment process.
Application of molecular markers makes the selection process much more effective. Marker assisted selection is an important tool for plant breeders to increase the efficiency of a breeding process, especially for multigenic traits, highly influenced by the environment. Epistasis is the interaction between alleles from two or more loci determining the complex traits, and thus plays an important role in the development of quantitative traits of crops. In this paper, the relationships between RAPD marker-by-marker interactions and 22 quantitative traits of caraway (Carum carvi L.) were analyzed. Significant associations of 116 epistatic markers with at least one trait in 2004 as well as 112 in 2005 were found on the basis of multivariate regression analysis. The proportion of total phenotypic variances of individual trait explained by the marker-by-marker interactions ranged from 25.3% to 96.0%.
The objective of a study conducted in the years 2007–2008 was to determine the nitrate content of the edible parts of vegetables and spice plants. The analyzed materials consisted of the following species: tomatoes, carrots, sweet basil and marjoram grown in the field, and tomatoes and chili peppers grown in a plastic tunnel. The experiment comprised different cultivation methods, sowing and planting dates, and fertilization levels. Among the analyzed cultivars of field-grown tomatoes, increased nitrate concentrations were observed in the fruits of cv. Złoty Ożarowski. Similar results were noted when eight tomato cultivars were grown in an unheated plastic tunnel. The fruits of cv. Bawole Serce had the lowest nitrate content, compared with the remaining tomato cultivars. Supplemental fertilization of tomato plants grown under cover significantly contributed to nitrate accumulation. The fruits of chili peppers grown in a plastic tunnel had a very low nitrate content. As regards marjoram, the highest nitrate concentrations were reported for the second date of sowing. The average nitrate content of carrot storage roots did not exceed the maximum permissible levels. Supplemental fertilization contributed to an insignificant increase in the N-NO3 content of carrot roots.
To investigate the changes in selected morphological traits and yield of coriander (Coriandrum sati- vum L.) in response to fertilization and salicylic acid foliar spraying under different irrigation intervals, two field experiments were conducted as split-factorial based on randomized complete block design with three replicates in 2014 and 2015. Treatments were three irrigation intervals (irrigation after 60, 90 and 120 mm evaporation from class A pan) and combination of fertilization (control, urea 100 kg ha–1, Nitrokara (bio-fertilizer), and 50% urea + Nitrokara) and salicylic acid (0 and 1 mM) that were allocated to the main and sub-plots, respectively. The results showed that plant height, length of the longest internode, stem diameter, branches per plant, dry weights of roots and leaves and fruit yield of coriander were reduced and root length enhanced with increasing the irrigation intervals. However, all of the nitrogen fertilizers, especially combined application of 50% urea and Nitrokara, and salicylic acid spraying, improved the selected morphological traits, and consequently fruit yield per unit area under favorable and limited irrigations.
The study aimed to determine agronomic characteristics and essential oil components of different basil ecotypes in semi-arid climatic conditions of South Eastern Anatolia, Diyarbakir, Turkey. Two-year harvest data about fresh and dry herb yield, dry leaf yield, essential oil content and its components from the plants of year 2015 and 2016 was analyzed in this study. Essential oil components were detected by gas chromatography/ mass spectrometry (GC/MS). The resulting outcomes demonstrated that both ecotypes and harvests had important effects on fresh and dry herb, dry leaf yield and essential oil contents of sweet basil. The highest dry leaf yield was noted from green leafy ecotypes and from second harvest stage. Twenty-three constituents were detected in the essential oil of O. basilicum ecotypes. The main components of basil essential oil were linalool, methyl chavicol, neral, geranial and methyl cinnamate that differed according to ecotypes and harvests during experimental years 2015 and 2016. Purple leafy basil ecotypes were determined as linalool rich, while greenish leaf ecotypes were abundant in methyl chavicol. Silbe – green ecotype contains higher neral and geranial levels than the other ecotypes. It was concluded that basil plant could be grown successfully and harvested two or more times to prefer for maximum dry leaf yield and essential oil contents under semi-arid climatic conditions.
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