نتایج جستجو برای: continual heat stress affects approximately 7 million hectares of wheat in developing countries
تعداد نتایج: 24579500 فیلتر نتایج به سال:
Wheat is the first among cultivated crops in terms of hectare in Iran, and is cultivated on 6.2 million hectares under variable agro-climatic conditions. Of 2.2millions hectares of wheat crop grown under irrigation system, about 30% of the areas experience the adverse effects of salinity stress, which is one of the limiting factors of wheat production in warm and temperate regions of Iran. Sel...
Introduction: One ways to prevent heat stress illness and protect workers is regional and national legislation and international standards about heat stress. If these regulations and standards are implemented correctly, they can be very effective and efficient. The aim of this review research was studying the importance of heat stress, the ways of prevention of heat related illnesses based on t...
introduction: diabetes mellitus is an growing national and international public health concern. the number of people affected by diabetes in world by 2030 will be 69% in developing countries. regular physical activity plays a key role in the management of type 2 diabetes melitus, particularly glycemic control. it has been recommended that peoples with type 2 diabetes participate in moderate-int...
despite the different criticisms on contrastive analysis it has been proved that the results of it(when processed) can be useful in a tefl environment, specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims.the consonants,vowels,stress and intonation of the two languages are described by the same model...
Understanding of plant adaptation to abiotic stresses has implications in plant breeding, especially in the context of climate change. MicroRNAs (miRNAs) and short interfering RNAs play a crucial role in gene regulation. Here, wheat plants were exposed to one of the following stresses: continuous light, heat or ultraviolet radiations over five consecutive days and leaf tissues from three biolog...
Maintaining wheat productivity under the increasing temperatures in South Asia is a challenge. We focused on developing early maturing wheat lines as an adaptive mechanism in regions suffering from terminal heat stress and those areas that require wheat adapted to shorter cycles under continual high temperature stress. We evaluated the grain yield performance of early-maturing heat-tolerant ger...
in civil engineering concrete is a material combined of hydraulic cement, sand, gravel and water. gravel and sand compose 60 to 70 percent of concrete. these aggregates support compression force of concrete. cement paste acts as glue to stick grain together. in bushehr factories producing aggregates do not operate according to astm standards, so that fineness modulus (fm) of the produced sands ...
In the recent years,theprojects developed the studies onwater resources and agriculture, developmentof human societies, the phenomenon of climate change and drought greatest environmental impact,socio-economic and industry in developing and even under developing countries. Results of theseissues showed the effects of mortality and immigration, human and animal species, environmentaldegradation,...
Modern biotechnology can help global coalition against hunger and malnutrition. Global area under the production of transgenic plants has reached 134 million hectares at the end of the year 2009 and is expected to reach nearly 150 million hectares by the year 2010. In spite of the benefits that modern biotechnology offers, concerns have been raised in the proper and environmentally sound and sa...
by P.P. Carvalho and R.J. Hance hile forecasts of economic and population trends are notoriously contentious, it seems to be fairly widely accepted that there will be approximately 11 000 million people to feed in the year 2050, which is about twice as many as there were in 1990. Simultaneously the stock of agricultural land will diminish as a consequence of urbanization, erosion, and desertifi...
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