Agronomy ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 673 ◽  
Author(s):  
John Clifton-Brown ◽  
Kai-Uwe Schwarz ◽  
Danny Awty-Carroll ◽  
Antonella Iurato ◽  
Heike Meyer ◽  
...  

Miscanthus, a C4 perennial grass native to Eastern Asia, is being bred to provide biomass for bioenergy and biorenewable products. Commercial expansion with the clonal hybrid M. × giganteus is limited by low multiplication rates, high establishment costs and drought sensitivity. These limitations can be overcome by breeding more resilient Miscanthus hybrids propagated by seed. Naturally occurring fast growing indigenous Miscanthus species are found in diverse environments across Eastern Asia. The natural diversity provides for plant breeders, the genetic resources to improve yield, quality, and resilience for a wide range of climates and adverse abiotic stresses. The challenge for Miscanthus breeding is to harness the diversity through selections of outstanding wild types, parents, and progenies over a short time frame to deploy hybrids that make a significant contribution to a world less dependent on fossil resources. Here are described the strategies taken by the Miscanthus breeding programme at Aberystwyth, UK and its partners. The programme built up one of the largest Miscanthus germplasm collections outside Asia. We describe the initial strategies to exploit the available genetic diversity to develop varieties. We illustrate the success of combining diverse Miscanthus germplasm and the selection criteria applied across different environments to identify promising hybrids and to develop these into commercial varieties. We discuss the potential for molecular selections to streamline the breeding process.


2018 ◽  
Vol 10 (9) ◽  
pp. 3109 ◽  
Author(s):  
Min-Seong Kim ◽  
Jinwon Kim ◽  
Brijesh Thapa

Jeju Island is a popular destination in South Korea that is dependent on nature-based tourism. The annual increase in the influx of visitors has created major environmental impacts due to overuse and commercial expansion. With projected growth in arrivals and the development of tourism infrastructure, the island will experience perpetual challenges for sustainable management of natural resources. However, the role of visitors will be central via a commitment to practice pro-environmental behaviors to protect the island from further degradation. This study was grounded in the cognition-affection-attitude-behavior model to examine the predictive validity of tourists’ environmental knowledge, environmental affect, and nature affiliation on pro-environmental behavior. The data comprised responses from 304 domestic visitors who had visited Jeju Island. The empirical findings indicate that environmental affect was significantly impacted by two dimensions of environmental knowledge (i.e., subjective and objective). Additionally, nature affiliation was positively impacted by environmental affect, while pro-environmental behavior was significantly influenced by both environmental affect and nature affiliation. Overall, these findings provide theoretical and practical implications for sustainable tourism at a nature-based destination. The findings can be utilized for implementation of intervention programs and visitor management at Jeju Island.


2019 ◽  
Vol 159 ◽  
pp. 213-227 ◽  
Author(s):  
Dan Lev ◽  
Roger M. Myers ◽  
Kristina M. Lemmer ◽  
Jonathan Kolbeck ◽  
Hiroyuki Koizumi ◽  
...  

Itinerario ◽  
1993 ◽  
Vol 17 (2) ◽  
pp. 10-36 ◽  
Author(s):  
Zhuang Guotu

Sino-Western relations in the eighteenth century mainly found their expression in a particular mode of commercial transactions in Canton. The structure of the Western trade with China was based on silver and colonial products from India and the Malay archipelago, like silver, cotton, pepper, lead. These commodities were exchanged for Chinese tea, silk and porcelain by the mediation of the so-called Hong trades. As long as the trade structure was kept in balance the Westerners were able to make large profits and commercial relations remained the same. When the trade structure fell out balance through, for instance, a shortage of silver or the prohibition of opium smuggling, the Western powers resorted to force. The discontinuation of the traditional Sino-Western trade because of an imbalance in the trade structure eventually did not lead to the decline of trade, but to military conquest: the Opium War in 1840. This War enabled the Westerners, headed by the English, to revamp the structure of their trade with China on their own terms and forced the Chinese government into acceptance. Since then the process of the Western expansion into China was characterised by commercial expansion, military show of force and political control. In this essay I would like to analyze how the traditional structure of Sino-Western trade lost its equilibrium and to study the changing character of European expansion into China as a result of this imbalance during the period of 1740-1840.


Sign in / Sign up

Export Citation Format

Share Document