scholarly journals Leaflet Boron Concentration Reduced with Hybrid Pistacia vera Rootstocks

HortScience ◽  
2022 ◽  
Vol 57 (1) ◽  
pp. 65-71
Author(s):  
Craig E. Kallsen ◽  
Dan E. Parfitt
Keyword(s):  
Interspecific Hybrids ◽  
Boron Concentration ◽  
Partial Solution ◽  
University Of California ◽  
Pistacia Vera ◽  
The West ◽  
The Past ◽  
Genetic Potential ◽  
B Uptake ◽  
Soil And Water

Excessive boron (B) in soil and water is a problem for pistachio (Pistacia vera L.) production in the San Joaquin Valley (SJV) of California. Although amenable, leaching of B requires more water than chlorine (Cl) or sodium (Na) and is increasingly difficult as B in irrigation water increases. The lack of subsurface drainage to the ocean increases soil salinity in many growing areas, especially on the west side of the SJV where B is often excessive natively in the soil and water. Pistachio rootstocks that can tolerate or exclude B may be a partial solution. For the past decade in California, the dominant rootstock has been seedlings and clonal selections of University of California Berkeley 1 (UCB-1), which is a hybrid of P. atlantica × P. integerrima. This reliance on a genetically similar pool of rootstocks has constrained Pistacia’s genetic potential for adapting to high-salt environments. This study compared scion and rootstock leaflet B concentration of novel hybrid experimental rootstocks with variable percentages of P. vera and P. integerrima heritage with UCB-1. Rootstocks with P. vera heritage limited B in both rootstock and scion leaflets compared with UCB-1. In six trials conducted over several years, leaflet B in ungrafted hybrid rootstocks having 62.5% to 75% P. vera and 25% to 37.5% P. integerrima heritage had 27.6% to 43.1% lower B leaflet concentration than did UCB-1. Depending on the experiment and year, grafted rootstocks having 37.5% P. vera and 62.5% P. integerrima heritage had 46.8% to 70.8% lower B scion leaflet concentration than did UCB-1. Genetic variation in B uptake in Pistacia species and interspecific hybrids, and among individual seedlings within populations, allows the breeding of pistachio rootstocks more tolerant of excess B.

Managing rivers for conservation and ecotourism in the Kruger National Park

1995 ◽  
Vol 32 (5-6) ◽  
pp. 227-233 ◽  
Author(s):  
F. J. Venter ◽  
A. R. Deacon
Keyword(s):  
National Park ◽  
Good Condition ◽  
Kruger National Park ◽  
Rapid Expansion ◽  
Natural Environments ◽  
The West ◽  
The Past ◽  
Management Actions ◽  
Flow Through ◽  
Three Rivers

Six major rivers flow through the Kruger National Park (KNP). All these rivers originate outside and to the west of the KNP and are highly utilized. They are crucially important for the conservation of the unique natural environments of the KNP. The human population growth in the Lowveld during the past two decades brought with it the rapid expansion of irrigation farming, exotic afforestation and land grazed by domestic stock, as well as the establishment of large towns, mines, dams and industries. Along with these developments came overgrazing, erosion, over-utilization and pollution of rivers, as well as clearing of indigenous forests from large areas outside the borders of the KNP. Over-utilization of the rivers which ultimately flow through the KNP poses one of the most serious challenges to the KNP's management. This paper gives the background to the development in the catchments and highlights the problems which these have caused for the KNP. Management actions which have been taken as well as their results are discussed and solutions to certain problems proposed. Three rivers, namely the Letaba, Olifants and Sabie are respectively described as examples of an over-utilized river, a polluted river and a river which is still in a fairly good condition.

The New Islamic State

2020 ◽  
Author(s):  
Farhad Khosrokhavar
Keyword(s):  
Middle East ◽  
Modern Society ◽  
Islamic State ◽  
Imagined Community ◽  
The West ◽  
Patriarchal Family ◽  
The Past ◽  
The World ◽  
The Creation

The creation of the Islamic State in Iraq and Sham (ISIS) changed the nature of jihadism worldwide. For a few years (2014–2017) it exemplified the destructive capacity of jihadism and created a new utopia aimed at restoring the past greatness and glory of the former caliphate. It also attracted tens of thousands of young wannabe combatants of faith (mujahids, those who make jihad) toward Syria and Iraq from more than 100 countries. Its utopia was dual: not only re-creating the caliphate that would spread Islam all over the world but also creating a cohesive, imagined community (the neo-umma) that would restore patriarchal family and put an end to the crisis of modern society through an inflexible interpretation of shari‘a (Islamic laws and commandments). To achieve these goals, ISIS diversified its approach. It focused, in the West, on the rancor of the Muslim migrants’ sons and daughters, on exoticism, and on an imaginary dream world and, in the Middle East, on tribes and the Sunni/Shi‘a divide, particularly in the Iraqi and Syrian societies.

Anti-Catholicism in Germany, Britain, and the United States: A Review and Critique of Recent Scholarship

2001 ◽  
Vol 70 (1) ◽  
pp. 98-131 ◽  
Author(s):  
Marjule Anne Drury
Keyword(s):  
Cultural Change ◽  
The United States ◽  
Turn Of The Century ◽  
Religious Culture ◽  
The West ◽  
The Past ◽  
Recent Scholarship ◽  
Race Ethnicity ◽  
Irish Question ◽  
Political Economic

The past two decades have seen an efflorescence of works exploring cultural anti-Catholicism in a variety of national contexts. But so far, historians have engaged in little comparative analysis. This article is a first step, examining recent historical literature on modern British and American anti-Catholicism, in order to trace the similarities and distinctiveness of the turn-of-the-century German case. Historians are most likely to be acquainted with American nativism, the German Kulturkampf, continental anticlericalism, and the problems of Catholic Emancipation and the Irish Question in Britain. Many of the themes and functions of anti-Catholic discourse in the West transcended national and temporal boundaries. In each case, the conceptualization of a Catholic ‘other’ is a testament to the tenacity of confessionalism in an age formerly characterized as one of inexorable secularization. Contemporary observers often agreed that religious culture—like history, race, ethnicity, geography, and local custom—played a role in the self-evident distinctiveness of peoples and nations, in their political forms, economic performance, and intellectual and artistic contributions. We will see how confessionalism remained a lens through which intellectuals and ordinary citizens, whether attached or estranged from religious commitments, viewed political, economic, and cultural change.

The Problem of Energy

2014 ◽  
Vol 31 (5) ◽  
pp. 3-20 ◽  
Author(s):  
John Urry
Keyword(s):  
Social Theory ◽  
21St Century ◽  
Fossil Fuel ◽  
Energy Systems ◽  
Social Thought ◽  
Human Intervention ◽  
The West ◽  
The Past ◽  
And Control ◽  
Global Growth

Energy forms and their extensive scale are remarkably significant for the ways that societies are organized. This article shows the importance of how societies are ‘energized’ and especially the global growth of ‘fossil fuel societies’. Much social thought remains oblivious to the energy revolution realized over the past two to three centuries which set the ‘West’ onto a distinct trajectory. Energy is troubling for social thought because different energy systems with their ‘lock-ins’ are not subject to simple human intervention and control. Analyses are provided here of different fossil fuel societies, of coal and oil, with the latter enabling the liquid, mobilized 20th century. Consideration is paid to the possibilities of reducing fossil fuel dependence but it is shown how unlikely such a ‘powering down’ will be. The author demonstrates how energy is a massive problem for social theory and for 21st-century societies. Developing post-carbon theory and especially practice is far away but is especially urgent.

For Science and Country: History Writing, Nation Building, and National Embeddedness in Third Republic France, 1870–1914

2021 ◽  
pp. 1-28
Author(s):  
Guillaume Lancereau
Keyword(s):  
Nation Building ◽  
Third Republic ◽  
Right Wing ◽  
History Writing ◽  
The West ◽  
Academic Competition ◽  
The Past ◽  
Methodological Nationalism ◽  
Late Nineteenth ◽  
Territorial Claims

This article examines late nineteenth and early twentieth-century historiographical practices and convictions in Third Republic France. It shifts the focus from the question of whether French academic historians were nationalists to the issue of how they were nationalists. If republican academic historians took a critical stance on nationalist distortions of the past, they nevertheless associated the teaching of history with patriotism and opposed historiographical “pan-Germanism” in ways favorable to French cultural and territorial claims. Meanwhile, the growing internationalization of the field stimulated scholarly competition across the West and spurred reflections about nationals’ epistemological privilege over national histories, methodological nationalism, and the invention of national historiographical traditions. Uncovering the anxieties of continual debate with foreign historians and the nationalist right wing, this article offers a prehistory of present-day dilemmas over global, national, and nationalist histories in an international field characterized by structural inequalities and academic competition.

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