نتایج جستجو برای: rain and drought

تعداد نتایج: 16836092  

2009
M. T. Hoffman P. J. Carrick L. Gillson A. G. West

Introduction More than 90% of South Africa is either arid or semi-arid and drought is a characteristic feature of the climate. Because drought has significant ecological and socio-economic impacts, investigations into its causes, consequences and mitigation have been regularly undertaken in South Africa over the last 100 years. Recent climate change scenarios suggest that there will be an incre...

A. Mostafaie A. Najaphy K. Moradpour, S. Mansoorifar

Drought is one of the most important factors limiting crop yields around the world. Drought stress in plants, the change (increase or decrease) in the production of plant proteins. This research was carried out using bread wheat genotypes. For evaluation of leaf protein pattern in wheat, 10 genotypes were assayed with 3 replications under irrigated (non-stress) and rain-fed (stress) conditions....

Groundwater is a major source of water for agriculture in Sheshdeh and Gharebolagh plain. In recent years increasing drought and excessive exploitation of these resources has increased the pressure on groundwater. The aim of this study was to investigate the relationship between meteorological and hydrogeological drought using the SPI and GRI indices. Eight rain gauges stations were used to cal...

2013
Loralee Larios Rebecca J. Aicher Katharine N. Suding Andreas Prinzing

Methods: We monitored plant community composition in paired grassland patches that were initially dominated by native or exotic grasses at eight sites. We followed recovery of native and exotic grassland species over time, starting in a record drought year prior to an intense fire, and then for 3 yrwithmore typical rainfall patterns after the fire. Additionally, we compared seed rain of native ...

Climate change, especially on account of greenhouse effect, has created disastrous problems in recent years directly or indirectly affecting different sectors in Iran. One of the most important misfortunes is the increase of climate and environmental crises such as flood, drought, tropical cycles, sea level rise and the dust storm, the commonest of which in Iran are flood and drought. In this s...

2013
Thomas Degenkolbe Phuc T. Do Joachim Kopka Ellen Zuther Dirk K. Hincha Karin I. Köhl

Rice provides about half of the calories consumed in Asian countries, but its productivity is often reduced by drought, especially when grown under rain-fed conditions. Cultivars with increased drought tolerance have been bred over centuries. Slow selection for drought tolerance on the basis of phenotypic traits may be accelerated by using molecular markers identified through expression and met...

Journal: :international journal of advanced biological and biomedical research 2014
k. moradpour a. najaphy s. mansoorifar a. mostafaie

drought is one of the most important factors limiting crop yields around the world. drought stress in plants, the change (increase or decrease) in the production of plant proteins. this research was carried out using bread wheat genotypes. for evaluation of leaf protein pattern in wheat, 10 genotypes were assayed with 3 replications under irrigated (non-stress) and rain-fed (stress) conditions....

2016
D.Karthika Menon

Drought is one of the most threatened natural vulnerabilities that are initiated by reason of scarcity of rain in a specific region. By comparing with all other natural hazards, it is very tough to discover since it develops slowly and have massive effect on the society and environment. Hence, in many countries satellite based drought indications have been recommended for early identification. ...

A. Mostafaie A. Najaphy K. Moradpour, S. Mansoorifar

Drought is one of the most important factors limiting crop yields around the world. Drought stress in plants, the change (increase or decrease) in the production of plant proteins. This research was carried out using bread wheat genotypes. For evaluation of leaf protein pattern in wheat, 10 genotypes were assayed with 3 replications under irrigated (non-stress) and rain-fed (stress) conditions....

2008
P. H. Zaidi Mamata Yadav D. K. Singh R. P. Singh

Maize crops grown during summer-rainy season in Asian tropics are prone to face both drought and excess moisture stress due uneven distribution patterns of monsoon rains in the region. We attempted to identify the relationship between drought and excess moisture tolerance through evaluation of a set of elite maize inbred lines, including lines with known performance under drought, excess moistu...

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