نتایج جستجو برای: drought

تعداد نتایج: 31475  

2016
Lei Kang Hongqi Zhang

Drought control and resistance affect national food security. With this in mind, we studied five main grain-producing regions of China: Sanjiang Plain, Songnen Plain, Huang-Huai-Hai Plain, the middle Yangtze River and Jianghuai region and Sichuan Basin. Using GIS technology, we evaluated the comprehensive agricultural drought situation based on major crops, the basic drought resistance by integ...

2017
Khaled Taïbi Antonio D. del Campo Alberto Vilagrosa José M. Bellés María Pilar López-Gresa Davinia Pla Juan J. Calvete José M. López-Nicolás José M. Mulet

Drought is one of the main constraints determining forest species growth, survival and productivity, and therefore one of the main limitations for reforestation or afforestation. The aim of this study is to characterize the drought response at the physiological and molecular level of different Pinus halepensis (common name Aleppo pine) seed sources, previously characterized in field trials as d...

2015
Christoph Tim Krannich Lisa Maletzki Christina Kurowsky Renate Horn Ann Cuypers Tony Remans

Climate change leading to increased periods of low water availability as well as increasing demands for food in the coming years makes breeding for drought tolerant crops a high priority. Plants have developed diverse strategies and mechanisms to survive drought stress. However, most of these represent drought escape or avoidance strategies like early flowering or low stomatal conductance that ...

2016
Margaret E. Andrew Katinka X. Ruthrof George Matusick Giles E. St. J. Hardy

Climate change is increasing the risk of drought to forested ecosystems. Although drought impacts are often anecdotally noted to occur in discrete patches of high canopy mortality, the landscape effects of drought disturbances have received virtually no study. This study characterized the landscape configuration of drought impact patches and investigated the relationships between patch characte...

2017
Anwar Eziz Zhengbing Yan Di Tian Wenxuan Han Zhiyao Tang Jingyun Fang

Drought is one of the abiotic stresses controlling plant function and ecological stability. In the context of climate change, drought is predicted to occur more frequently in the future. Despite numerous attempts to clarify the overall effects of drought stress on the growth and physiological processes of plants, a comprehensive evaluation on the impacts of drought stress on biomass allocation,...

2013
Hikmet Budak Melda Kantar Kuaybe Yucebilgili Kurtoglu

The genus Triticum includes bread (Triticum aestivum) and durum wheat (Triticum durum) and constitutes a major source for human food consumption. Drought is currently the leading threat on world's food supply, limiting crop yield, and is complicated since drought tolerance is a quantitative trait with a complex phenotype affected by the plant's developmental stage. Drought tolerance is crucial ...

2013
Yun Chen Zhi-Hao Liu Li Feng Yong Zheng Deng-Di Li Xue-Bao Li

Cotton is one of the most important crops for its natural textile fibers in the world. However, it often suffered from drought stress during its growth and development, resulting in a drastic reduction in cotton productivity. Therefore, study on molecular mechanism of cotton drought-tolerance is very important for increasing cotton production. To investigate molecular mechanism of cotton drough...

Journal: :Remote Sensing 2017
Xiang Zhang Chehan Wei Renee Obringer Deren Li Nengcheng Chen Dev Niyogi

Different drought indices often provide different diagnoses of drought severity, making it difficult to determine the best way to evaluate these different drought monitoring results. Additionally, the ability of a newly proposed drought index, the Process-based Accumulated Drought Index (PADI) has not yet been tested in United States. In this study, we quantified the severity of 2012 drought wh...

2017
Chenggang Liu Yanjie Wang Kaiwen Pan Qingwei Wang Jin Liang Yanqiang Jin Akash Tariq

Dwarf bamboo-dominated forests are often subjected to temporary periods of drought due to rising air temperature and decreasing rainfall. Nevertheless, the relationship among CO2 assimilation, photoprotective pathways and metabolism of reactive oxygen species (ROS) remains unexplored in bamboo species. Changes in leaf gas exchange, chlorophyll fluorescence, energy partitioning, antioxidative sy...

2009
Hanhong Bae Richard C. Sicher Moon S. Kim Soo-Hyung Kim Mary D. Strem Rachel L. Melnick Bryan A. Bailey

Theobroma cacao (cacao) is cultivated in tropical climates and is exposed to drought stress. The impact of the endophytic fungus Trichoderma hamatum isolate DIS 219b on cacao's response to drought was studied. Colonization by DIS 219b delayed drought-induced changes in stomatal conductance, net photosynthesis, and green fluorescence emissions. The altered expression of 19 expressed sequence tag...

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