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2022, Journal of Applied Biotechnology and Bioengineering
https://doi.org/10.15406/jabb.2022.09.00301…
3 pages
1 file
Salinity stress affects the growth and productivity of various fruit crops, furthermore, salinity is considered one of the main determining factors for cultivation. Under fluctuation in climate conditions, citrus growers must use various techniques to deal with increasing salinity levels to alleviate injuries, such as grafting with resistance rootstocks, canopy management, the Shading net technique, and using plant growth substances to sustain citriculture.
Advances in Citrus Production and Research [Working Title]
Citrus production is affected globally by several environmental stresses. Some citrus-producing regions suffer from severe ecological abiotic stresses, including cold, soil salinity and sodicity, extreme temperature, and drought. These abiotic stresses can alleviate the growth, fruit yield, and quality of citrus. Strategies that attempt to sustain and increase tolerance of citrus against the negative effect of abiotic stresses are the use of antiperspirant compounds, phytohormones, synthetic and natural growth regulators, soil and plant moisture retaining tools and structures, nutrition management, application of organic fertilizers, rootstocks breeding in citriculture, and others. These strategies increase the yield and growth of the plant along with the relative improvement of the fruit quality during the growth and fruiting period, increasing the absorption of water and nutrients, the extensive accumulation of osmolytes and the increase of antioxidant enzymes, changes in the amou...
2020
Citrus is one of the important horticultural fruit crop growing all over world. However, it is sensitive to many environmental stresses such as drought, excessive watering (water logging), extreme temperatures (cold, frost and heat), salinity and mineral toxicity, among all these stresses salinity stress is one of them. Salinity is abiotic factor that decrease the vegetative growth and yield by causing hyperosmotic and hyperionic effects on soil rhizosphere. Citrus is a crop susceptible to salt because citrus growth and yield is more significantly reduce in salt stress condition as compared with other fruit crops. There are many ways to combat the negative effect of salinity like alternate irrigation or selection of resistant root stocks. Therefore, this review focuses on the effect of salinity on citrus production and possible measures to reduce the losses.
Agronomy, 2021
Among the various abiotic stresses, drought is the major factor limiting crop productivity worldwide. Citrus has been recognized as a fruit tree crop group of great importance to the global agricultural sector since there are 140 citrus-producing countries worldwide. The majority of citrus-producing areas are subjected to dry and hot summer weather, limited availability of water resources with parallel low-quality irrigation water due to increased salinity regimes. Citrus trees are generally classified as “salt-intolerant” with high water needs, especially during summer. Water scarcity negatively affects plant growth and impairs cell metabolism, affecting the overall tree growth and the quality of produced fruit. Key factors that overall attempt to sustain and withstand the negative effect of salinity and drought stress are the extensive use of rootstocks in citriculture as well as the appropriate agronomical and irrigation practices applied. This review paper emphasizes and summari...
Journal of Central European Agriculture, 2005
Due to the rapid expansion of irrigated agriculture, effi cient use of the limited water resources in arid and semi-arid regions is becoming more and more vital. However, water salinity is a major problem due to its negative infl uence on the yields of many crops. It reduces citrus trees' growth and causes physiological disorders. Primarily salt-stress lowers net CO 2 assimilation, stomatal conductance, and water potential of citrus tree leaves, in addition to accumulation of excessive concentration of Chloride or Sodium in leaves. A great deal of research indicates that citrus have the genetic potential to be salt-sensitive; however inheritance studies in citrus are scarce. In this paper the adverse of effects of salinity on physiological aspects of citrus are reviewed. The review summarizes the prevailing state of knowledge about the responses and tolerance of citrus trees to salinity.
Bioscience Journal, 2018
In order to study the growth and physiology of citrus rootstocks under saline water irrigation, during formation of rootstocks, an assay was carried out in a factorial scheme, 2 x 6, corresponding to two levels of salinity of the nutrient solution: 0.3 and 4.0 dS m-1 and six genotypes provided by the Citrus Breeding Program of Embrapa Cassava & Fruits-CBP, distributed in randomized block design with three replications. The genotypes were: 1.'Santa Cruz Rangpur' lime (SCRL) (Citrus limonia Osbeck), 2. 'Florida Rough' lemon (FRL) (Citrus jambhiri Lush.), 3. 'Volkamer' lemon (VKL) (C. volkameriana V. Ten. &Pasq.), 4. CSM x SWC-028, 5. CSM x SWC-033 and 6.CSM x SWC-041, the last three hybrids of common 'Sunki' mandarin (CSM) [C.sunki (Hayata) hort. ex Tanaka] with 'Swingle' citrumelo (SWC) [C. paradisi Macfad. x Poncirus trifoliata (L.) Raf.]. Nucellar plants from these genotypes were grown in alternative hydroponic system, using Leonard jars. Application of nutrient solution made with saline water started from 90 days after sowing until 120 days, when the growth and physiology parameters of plants were evaluated. Salt stress influenced the growth and physiological parameters in all genotypes. Salt stress did not influence the chlorophyll a fluorescence in the genotypes VKL and CSM x SWC-041, indicating no damage to the photosynthetic apparatus. The CSM x SWC-041, 'Santa Cruz Rangpur' lime, 'Florida Rough' lemon and 'Volkamer' lemon are the more tolerant genotypes to salinity based on growth rate.
Mesopotamia J. of Agric, 2020
Soil and irrigation water salinity are among the main problems hindering agricultural development, especially in arid and semi-arid regions, which depends on especially surface irrigation as the main means in agriculture. The salinity lead to low growth and production of plants, including fruit, as a result of the temporal, azalotic, or nutrients imbalance. Salinity of the soil or irrigation water greatly reduces the growth, productivity and quality of fruit crops by affecting their physiological, chemical and biological functions as they cause obstruction to the absorption of some elements by the plant and if it increased absorption of salts, it causes ion poisoning of the cell, as well as increased salts cause less absorption of water by the plant due to the high osmosis of soil water. There are many ways to reduce the salt stress in the growth of fruit plants, the most important of which is adding organic fertilizers such as humic acid or spraying with the amino acid proline.
J. Amer. Soc. Hort. Sci, 2010
In three separate experiments, the growth and water use of salinized citrus rootstock seedlings and grafted trees were modified using different growth substrates, elevated CO 2 , or 50% shade screen under field conditions. By reanalyzing previously published data, we tested the hypothesis that salinity tolerance in citrus can be characterized as the ability to maintain low levels of leaf Claccumulation through high plant growth and high water use efficiency (WUE) under saline conditions. Well-irrigated salinized seedlings of the relatively salt-sensitive Carrizo citrange [Carr (Citrus sinensis • Poncirus trifoliata)] were grown in sand, clay, or a peat-based soilless media. Salinity stress reduced plant growth and water use. Leaf Clconcentration was negatively related to plant growth, but leaf Clincreased with transpiration rate in low-saline treatments. In a second experiment using salinized seedlings of the relatively salt-tolerant Cleopatra mandarin [Cleo (Citrus reticulata)] grown along with Carr seedlings with or without elevated CO 2 , leaf Clwas negatively related to growth and to shoot/root dry weight ratio, but was positively related to water use such that leaf Clwas negatively related to leaf WUE. In a third experiment using salinized 2-year-old 'Valencia' orange (C. sinensis) trees grafted on Cleo or Carr rootstocks and grown with or without shadecloth, leaf Clwas positively related to leaf transpiration as both were higher in the spring than in the fall, regardless of rootstock or shade treatment. Overall, leaf Clwas positively related to water use and was negatively related to leaf WUE. High growth, low water use, and consequently, high WUE of salinized citrus were related to low leaf Cl-. Such relationships can be used as indicators of salinity tolerance.
HE STORY OF THE Barbarian Other in modern scholarship has followed an arc. First, there was a heyday with the works, most prominently, of François Hartog and Edith Hall. Then there was a kind of secondary phrase, with the elaboration of the overall theme in smaller studies, or debates over the key trigger for the development of the Greek-Barbarian polarity (colonization, the Persian Wars, Athenian imperialism?). 1 And then, surprisingly quickly, there came a reaction. Already in 2002, James Davidson wrote in the pages of the Times Literary Supplement that the "fashion for alterity [in classics had] passed its peak"-though it "lingers still," he continued (rather haughtily), "in general introductions. .. eager first books, and student essays." 2 There are a number of interlocking strands to this reaction. On the one hand, the Barbarian has been shrunk, seen more narrowly as an Athenian phenomenon; it is sometimes described as an "official" Athenian position. 3 On the other hand, more widely, the idea that Greek identity was defined primarily in oppositional terms has been disrupted by the introduction of apparently contrary evidence: expressions of curiosity in, or approval of, the foreign; the use of the Other as the basis of a critique of the normatively Greek; or evidence of real-life contact between Greeks and non-Greeks, and the borrowing or appropriation of aspects of non-Greek culture. The move "away from binary oppositions" 4 has become indeed almost a default scholarly manoeuvre. More broadly, for James Davidson, the most fundamental criticism of the Barbarian industry (as it has seemed) was the paucity of its results. "Most of the man and woman hours spent playing on alterity over the last twenty years have ended up in rather repetitive jingles"-[even if ] "from time to time someone manages to get a decent tune out of the instrument." 5 Davidson then continued with a This paper was delivered as the 2016 J. P. Barron Memorial Lecture at the Institute of Classical Studies, London. My thanks to the ICS Director, Greg Woolf, for his invitation and hospitality, and to the audience in London and subsequently at St Andrews for their responses and suggestions. I am grateful especially to Antti Lampinen, Jan Haywood, Emma Dench, and Sue Marchand for comments on a written draft, to Joe Skinner and Paul Cartledge for fruitful discussions-and to the Barron family for their warmth over more than three decades. All translations are my own unless specified.
Kanász Viktor: Iskolamesterek a veszprémi egyházmegyében az 1778–1779-es canonica visitatio tükrében. In: A veszprémi püspökség „hosszú 19. százada”. A veszprémi egyházmegye története 1777–1917 között, szerk. Karlinszky Balázs – Varga Tibor, Veszprém, 2024, 137–162.
The society of the schoolmasters of the Veszprém diocese was especially diverse in the 1770’s: we can find among them learned, Latin speaking teachers as well as magisters who could not even write in Hungarian. This paper draws the attention on how diverse requirements the Catholic church – including the Veszprém episcopate – and the local communities set up for the schoolmasters in the era and how the magisters met or tried to meet these criteria. In this aspect they seem to have had three main tasks: teaching, chanting and bell-ringing. Due to all this, they were required to diligently complete their teaching tasks with appropriate education, do the chanting and bell-ringing duties with appropriate knowledge of the ceremonies, do the creed and live a virtuous life keeping up good relationships with the parish priest and with the followers not causing any scandals in the local communities. As for the latter, they meant frugal alcohol consumption. Apart from this, the age of the schoolmasters was also considered since too old age could bring about several problems. This study finally refutes the old view that in this era the main task of the schoolmasters was not education but the tasks of a cantor since in the Veszprém diocese teaching received nearly as much emphasis and attention from the tasks of the schoolmasters as chanting.
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At the end of August 2022, the Berlin Academy of Arts hosted a gathering of sound artists and sound researchers entitled "Soundings. Assemblies of Listenings and Voices from the Souths". This meeting was intended to develop new models for aesthetic and structural equity that would give adequate and audible voice to artistic and theoretical concerns emanating from Asian, African, Latin American cultural contexts, explicitly including Indigenous and Folk practices in the socalled 'Global North'. About a hundred participants from these contexts, the overwhelming majority so-called 'people of colour', passionately and intelligently demonstrated and argued against the many ways in which sonic and aesthetic, but also structural bias in cultural and academic institutions 'in the West' propped up its cultural 'soft' power. They looked for common ways to deal with this situation, for networks and-not the least-for mutual comfort and support. One participant even questioned the place chosen for this gathering: was it not strange and illogical to initiate these important and groundbreaking discussions within one of the hegemonial cultures? Why had we not held this gathering in, e.g.
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