نتایج جستجو برای: drought stress has been well documented as an effective parameter in decreasing crop production
تعداد نتایج: 18479605 فیلتر نتایج به سال:
background: the effect of heat stress on physiologicalparameters has been well documented. however, there arereports of a genetic based heat tolerance in some sheep breeds.objectives: the aim of the present study was to monitor thephysiological responses of an iranian fat-tailed breed againstheat stress and an acute stress insult. methods:atotal numberof 15 fall-born ram lambs were selected and...
in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...
expansion of oilseeds cultivation plays an important role in provision of the required edible oils for a country's population. iran is one of the origins safflower as a drought and salt tolerant crop, and therefore, it can be counted on as a suitable alternative crop for cultivation in marginal areas. the aims followed in the present research were on evaluation and selection of late season...
introduction drought stress reduces plant growth by affecting various physiological and biochemical processes, such as photosynthesis, respiration, translocation, ion uptake, carbohydrates, nutrient metabolism and growth promoters. garlic (allium sativum l.) is an annual bulb crop that has been cultivated since ancient times and was used as a spice and condiment for many centuries. garlic is an...
1.1 introduction “i see translation as the attempt to produce a text so transparent that it does not seem to be translated. a good translation is like a pane of glass. you only notice that it’s there when there are little imperfections- scratches, bubbles. ideally, there shouldn’t be any. it should never call attention to itself.” “norman shapiro” (venuti, 1995:1) edward fitzgerald is the br...
drought sensitivity is considered as a major concern for chickpea (c. arietinum) seed production. determination of drought adaptation mechanisms is an essential constituent of this crop breeding programs. with this purpose, the present research was conducted to distinguish the molecular basis of chickpea drought tolerance using cdna-aflp approach. the expression profile was compared between dro...
Drought is the most significant constraint for crop production in arid and semi-arid regions. In order to assess drought tolerance in fifteen rapeseed (Brassica napus) cultivars using yield-based drought tolerance indices, two experiments were conducted at the research station of College of Agriculture, Shiraz University, Shiraz, Iran during 2009-2010 growing season. The cultivars were...
Drought is the most significant constraint for crop production in arid and semi-arid regions. In order to assess drought tolerance in fifteen rapeseed (Brassica napus) cultivars using yield-based drought tolerance indices, two experiments were conducted at the research station of College of Agriculture, Shiraz University, Shiraz, Iran during 2009-2010 growing season. The cultivars were...
abstract type-ii fuzzy logic has shown its superiority over traditional fuzzy logic when dealing with uncertainty. type-ii fuzzy logic controllers are however newer and more promising approaches that have been recently applied to various fields due to their significant contribution especially when the noise (as an important instance of uncertainty) emerges. during the design of type- i fuz...
the present study aimed at investigating how different news agencies using the concept of legitimation/delegitimation represent the same event differently. to this end, van leeuwens (2008) legitimatory/delegitimatory framework was applied to the data gleaned from the iranian state-run news agency fars news, british state-run news agency bbc, and also american state-run news agency voa. the resu...
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