نتایج جستجو برای: agricultural drought

تعداد نتایج: 130420  

2014
Yanjie Xie Yu Mao Wei Zhang Diwen Lai Qingya Wang Wenbiao Shen

Running head: 1 Hydrogen, stomatal closure and drought tolerance 2 3 Authors: 4 Yanjie Xie, Yu Mao, Wei Zhang, Diwen Lai, Qingya Wang, Wenbiao Shen 5 6 Address: 7 1 College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China 8 2 Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 9 210095, China 10 11 *Corresponding author 12 Wenbiao Shen 13 College...

2016
Hao Guo Xingming Zhang Fang Lian Yuan Gao Degen Lin

Agriculture is a sector easily affected by meteorological conditions. Crop yield reduction, even regional conflicts, may occur during a drought. It is extremely important to improve the state of our knowledge on agricultural drought risk. This study has proposed a new method (vulnerability surfaces) for assessing vulnerability quantitatively and continuously by including the environmental varia...

2013
Zengchao Hao Amir AghaKouchak

Defining droughts based on a single variable/index (e.g., precipitation, soil moisture, or runoff) may not be sufficient for reliable risk assessment and decision-making. In this paper, a multivariate, multiindex droughtmodeling approach is proposed using the concept of copulas. The proposed model, named Multivariate Standardized Drought Index (MSDI), probabilist ically combines the Standardize...

Journal: :The Plant cell 2008
Hong Yu Xi Chen Yuan-Yuan Hong Yao Wang Ping Xu Sheng-Dong Ke Hai-Yan Liu Jian-Kang Zhu David J Oliver Cheng-Bin Xiang

Drought is one of the most important environmental constraints limiting plant growth and agricultural productivity. To understand the underlying mechanism of drought tolerance and to identify genes for improving this important trait, we conducted a gain-of-function genetic screen for improved drought tolerance in Arabidopsis thaliana. One mutant with improved drought tolerance was isolated and ...

2017
Heng Dong Jun Li Yanbin Yuan Lin You Chao Chen

In recent decades, various kinds of remote sensing-based drought indexes have been proposed and widely used in the field of drought monitoring. However, the drought-related software and platform development lag behind the theoretical research. The current drought monitoring systems focus mainly on information management and publishing, and cannot implement professional drought monitoring or par...

2014
Zengchao Hao Amir AghaKouchak Navid Nakhjiri Alireza Farahmand

Drought is by far the most costly natural disaster that can lead to widespread impacts, including water and food crises. Here we present data sets available from the Global Integrated Drought Monitoring and Prediction System (GIDMaPS), which provides drought information based on multiple drought indicators. The system provides meteorological and agricultural drought information based on multipl...

Journal: :Acta biochimica et biophysica Sinica 2010
Liang Chen Feng Ren Hui Zhong Yanye Feng Weimin Jiang Xuebao Li

High salinity and drought are the major abiotic stresses that adversely affect plant growth and agricultural productivity. To investigate genes that are involved in response to abiotic stresses in Brassica napus, a comprehensive survey of genes induced by high-salinity and drought stresses was done by macroarray analysis. In total, 536 clones were identified to be putative high-salinity-or drou...

2018
Paul E Abraham Benjamin J Garcia Lee E Gunter Sara S Jawdy Nancy Engle Xiaohan Yang Daniel A Jacobson Robert L Hettich Gerald A Tuskan Timothy J Tschaplinski

Drought stress is a recurring feature of world climate and the single most important factor influencing agricultural yield worldwide. Plants display highly variable, species-specific responses to drought and these responses are multifaceted, requiring physiological and morphological changes influenced by genetic and molecular mechanisms. Moreover, the reproducibility of water deficit studies is...

2001
Jiban Mitra

Drought limits the agricultural production by preventing the crop plants from expressing their full genetic potential. Three mechanisms, namely drought escape, drought avoidance and drought tolerance are involved in drought resistance. Various morphological, physiological and biochemical characters confer drought resistance. Morphological and physiological characters show different types of inh...

Journal: :International journal of biometeorology 2017
Rajen Bajgain Xiangming Xiao Jeffrey Basara Pradeep Wagle Yuting Zhou Yao Zhang Hayden Mahan

Agricultural drought, a common phenomenon in most parts of the world, is one of the most challenging natural hazards to monitor effectively. Land surface water index (LSWI), calculated as a normalized ratio between near infrared (NIR) and short-wave infrared (SWIR), is sensitive to vegetation and soil water content. This study examined the potential of a LSWI-based, drought-monitoring algorithm...

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