نتایج جستجو برای: drought

تعداد نتایج: 31475  

Journal: :Genetics and molecular research : GMR 2013
Z H Xu W R Wu

Drought is a major limiting factor in crop production. Rewatering is a process opposite to drought, allowing plants to recover to their normal physiological state. To understand more thoroughly the set of genes involved in plant response to drought, we comparatively and jointly analyzed the microarray data of drought and rewatering experiments in Arabidopsis. A total of 3833 differentially expr...

2016
Donald A. Wilhite

Although drought is a normal, recurring feature of climate, little progress has been made in drought management in most parts of the world. The progress in drought planning that has been achieved in some countries and regions can be useful for other drought-prone regions. In this paper, a drought planning process, originally developed in 1991 for state-level government in the United States, is ...

2014
Junfei Chen Jing Chao

With the global climate change, drought disasters occur frequently. Drought prediction is an important content for drought disaster management, planning and management of water resource systems of a river basin. In this study, a short-term drought prediction model based on deep belief networks DBNs is proposed to predict the time series of different time-scale standardized precipitation index S...

2013
A H. Sakamoto Y. Nakagawara S. Oguri

Drought stress is a critical environmental factor that adversely affects crop productivity and quality. Because of their immobile nature, plants have evolved mechanisms to sense and respond to drought stress. We identified a novel locus of Arabidopsis, designated DRA1 (drought responsive ankyrin1), whose disruption leads to increased drought-stress tolerance. DRA1 encodes a transmembrane protei...

2005
L. H. Feng X. C. Zhang

According to the calculation of wind scale and earthquake magnitude, this paper puts forward the concept of drought magnitude and disaster intensity and lays out a new method by quantitative calculation. Drought magnitude is the quantitative index that describes the scale of a drought, and disaster intensity of drought is the quantitative index to describe the loss caused by a drought. Both ind...

Journal: :Journal of environmental health 2016
Martin Kalis Elaine Curtiss

Are drought issues affecting your com­ munity, or could they affect your com­ munity in the future? CDC’s drought guidance, When Every Drop Counts, can help you understand how drought may impact public health in your community and how to prepare for it. Although many aspects and implications of drought have been well researched, the Centers for Disease Control and Prevention (CDC) recognize tha...

Journal: :Remote Sensing 2014
Sawaid Abbas Janet E. Nichol Faisal Mueen Qamer Jianchu Xu

This study assesses the applicability of remote sensing data for retrieval of key drought indicators including the degree of moisture deficiency, drought duration and areal extent of drought within different land cover types across the landscape. A Normalized Vegetation Supply Water Index (NVSWI) is devised, combining remotely sensed climate data to retrieve key drought indicators over differen...

2015
Ruiyang Hu Bo Wu Huiquan Zheng Dehuo Hu Xinjie Wang Hongjing Duan Yuhan Sun Jinxing Wang Yue Zhang Yun Li Tony Remans

Chinese fir (Cunninghamia lanceolata), an evergreen conifer, is the most commonly grown afforestation species in southeast China due to its rapid growth and good wood qualities. To gain a better understanding of the drought-signalling pathway and the molecular metabolic reactions involved in the drought response, we performed a genome-wide transcription analysis using RNA sequence data. In this...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
Rosa M Rivero Mikiko Kojima Amira Gepstein Hitoshi Sakakibara Ron Mittler Shimon Gepstein Eduardo Blumwald

Drought, the most prominent threat to agricultural production worldwide, accelerates leaf senescence, leading to a decrease in canopy size, loss in photosynthesis and reduced yields. On the basis of the assumption that senescence is a type of cell death program that could be inappropriately activated during drought, we hypothesized that it may be possible to enhance drought tolerance by delayin...

2012
A. Bano F. Ullah

The effect of drought stress and abscisic acid (ABA) applied at tillering stage (55 days after sowing) was compared in 2 wheat cultivars differing in drought tolerance. The activities of superoxide dismutase (SOD) and peroxidase (POD) and contents of endogenous ABA in plants were measured at 3 days of drought stress in cv. Chakwal-97 (drought tolerant) and cv. Punjab-96 (drought susceptible). A...

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