نتایج جستجو برای: drought analysis

تعداد نتایج: 2849509  

2010
M. L. 1 Chu Lin and Tsai

The objective of this study is to develop a novel methodology integrating remote sensing, geographic information system technology and local spatial autocorrelation geo-computation for quick drought assessment. One group of drought indices, based on the condition of the vegetation, includes the Normalized Difference Vegetation Index (NDVI), Anomaly of Normalized Difference Vegetation Index (NDV...

Journal: :PloS one 2016
Chukwuma C Ogbaga Piotr Stepien Beth C Dyson Nicholas J W Rattray David I Ellis Royston Goodacre Giles N Johnson

We have examined the biochemical responses of two sorghum cultivars of differing drought tolerance, Samsorg 17 (more drought tolerant) and Samsorg 40 (less drought tolerant), to sustained drought. Plants were exposed to different degrees of drought and then maintained at that level for five days. Responses were examined in terms of metabolic changes and the expression of drought induced protein...

Journal: :The New phytologist 2007
Andrew C Cuming Sung Hyun Cho Yasuko Kamisugi Helen Graham Ralph S Quatrano

Dehydration tolerance was an adaptive trait necessary for the colonization of land by plants, and remains widespread among bryophytes: the nearest extant relatives of the first land plants. A genome-wide analysis was undertaken of water-stress responses in the model moss Physcomitrella patens to identify stress-responsive genes. An oligonucleotide microarray was used for transcriptomic analysis...

2013
Andrés J. Cortés Fredy A. Monserrate Julián Ramírez-Villegas Santiago Madriñán Matthew W. Blair

Reliable estimations of drought tolerance in wild plant populations have proved to be challenging and more accessible alternatives are desirable. With that in mind, an ecological diversity study was conducted based on the geographical origin of 104 wild common bean accessions to estimate drought tolerance in their natural habitats. Our wild population sample covered a range of mesic to very dry...

2016
Emily Merewitz Yi Xu Bingru Huang

Transformation with an isopentenyl transferase (ipt) gene controlling cytokinin (CK) synthesis has been shown to enhance plant drought tolerance. The objective of this study was to identify differentially-expressed genes (DEGs) in creeping bentgrass (Agrostis stolonifera) overexpressing ipt compared to non-transgenic plants. The ipt transgene was controlled by a senescence-activated promoter (S...

2010
M. L. Warburton J. Yan T. Setter

Association analysis through linkage disequilibrium is a useful new tool for the dissection of complex traits and identification of superior alleles at genes identified. Presented here are the results in the search for DNA polymorphisms associated with drought tolerance, a highly quantitative trait in maize, using the candidate gene approach. The drought association mapping test characterized 3...

Journal: :environmental resources research 2014
farshad solaimani sardou abdolreza bahramand

hydrological drought analysis using sdi index in halilrud basin of iran abstract nowadays, drought is considered as damaging environmental phenomenon which affects natural resources and social communities. therefore it will be an important issues that magnitude and effects of these phenomena to be considered. to do this we used l-moment method for regional homogeneity testing. the streamflow dr...

2018
Ping Li Yanxia Zhang Xuexia Wu Yujiao Liu

Water scarcity is a major abiotic stress factor that strongly influences growth, development and yield of grain legumes in arid and semi-arid area of the world. Drought stress frequently occurs during the seedling stage and finally affects yield of faba bean (Vicia faba L.). However, the responses of plant leaf to drought have not been documented very well at the proteomic level. "Ga da dou" of...

2013
Shengxue Liu Xianglan Wang Hongwei Wang Haibo Xin Xiaohong Yang Jianbing Yan Jiansheng Li Lam-Son Phan Tran Kazuo Shinozaki Kazuko Yamaguchi-Shinozaki Feng Qin

The worldwide production of maize (Zea mays L.) is frequently impacted by water scarcity and as a result, increased drought tolerance is a priority target in maize breeding programs. While DREB transcription factors have been demonstrated to play a central role in desiccation tolerance, whether or not natural sequence variations in these genes are associated with the phenotypic variability of t...

Journal: :Remote Sensing 2017
Tengfei Cui Lawrence Martz Xulin Guo

Drought is a significant climatic disturbance in grasslands, yet the impact drought caused by global warming has on grassland phenology is still unclear. Our research investigates the long-term variability of grassland phenology in relation to drought in the Canadian prairies from 1982 to 2014. Based on the start of growing season (SOG) and the end of growing season (EOG) derived from Global In...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید