نتایج جستجو برای: sink activity

تعداد نتایج: 1147577  

Journal: :Current opinion in plant biology 1998
K Herbers U Sonnewald

The manipulation of sink to source relations has been subject to extensive plant breeding programs aiming to improve harvest index and thereby crop yield. The introduction of molecular and biochemical tools has enabled scientists to investigate the underlying principles. This has opened up the fascinating possibility of identifying molecular determinants of sink strength and to further increase...

2007
E. HEUVELINK

The simulation of carbon allocation among plant organs is one of the weakest features of crop growth models. This paper briefly discusses five concepts of modelling carbon partitioning: 1. Descriptive allometry, proposing a predetermined ratio between the (relative) growth rates of plant organs; 2. Functional equilibrium, proposing an equilibrium between root and shoot activity; 3. Canonical mo...

Journal: :پژوهش های تولید گیاهی 0

trehalose is an important disaccharide signal metabolite in plants which is involved in various aspects of plant function such as response to stress, photosynthesis and carbon allocation and partitioning. a mutant of arabidopsis lacking trehalose-6-phosphate synthase activity (tps1) accumulates ascorbate. exogenous ascorbate application ameliorates trehalose induced growth inhibition of wild ty...

The ever-increasing problem of water scarcity in arid and semi-arid regions of Iran has necessitated the demand to replacement of sugar beet plantation by more water-use efficient plants. Sweet sorghum is one of the sugars plants with low water requirements that potentiates cost-effective sugar production in different regions. However, physiological aspects of sugar yield in this plant is not c...

Journal: :پژوهش های تولید گیاهی 0

in order to study the effect of different nitrogen fertilizer rates and source-sink limitation treatments on yield and yield component of contrast rice (oryza sativa l.) cultivars, a field experiment was carried out in the rice research institute of iran-deputy of mazandaran (amol) during 2006. a split split experiment in the basis of randomized complete block design with 3 replications and 3 f...

This study numerically investigated heat transfer and fluid flow characteristics in a novel cylindrical heat sink with helical minichannels for the laminar flow of fluid with temperature-dependent properties. A finite volume method was employed to obtain the solution of governing equations. The effects of helical angle, channel aspect ratio, and Reynolds number, which were regarded as main para...

Sink location is considered as a basic service in geographic routing in wireless sensor networks. Obtaining the location of sink node by source node using an efficient method with low complexity has always been a challenging issue in research. In this paper, a sink location algorithm based on Fano plane is proposed. The research challenge is how to ensure the intersection of two SLQ (Location Q...

Journal: :Journal of experimental botany 2001
A Quereix R C Dewar J P Gaudillere S Dayau C Valancogne

An experimental and modelling study of source-sink interactions in Vitis vinifera L., cv. Cabernet Sauvignon, rooted cuttings under non-limiting environmental conditions with a 12 h photoperiod is presented here. After 4 h, measured photosynthesis, stomatal conductance and leaf carbohydrate content reached maximum values. Over the remainder of the photoperiod, photosynthesis and stomatal conduc...

Journal: :Journal of neurophysiology 2012
Daniel Stolzberg Michael Chrostowski Richard J Salvi Brian L Allman

A high dose of sodium salicylate temporarily induces tinnitus, mild hearing loss, and possibly hyperacusis in humans and other animals. Salicylate has well-established effects on cochlear function, primarily resulting in the moderate reduction of auditory input to the brain. Despite decreased peripheral sensitivity and output, salicylate induces a paradoxical enhancement of the sound-evoked fie...

2012
Michael Chrostowski Richard J. Salvi Brian L. Allman

27 A high dose of sodium salicylate temporarily induces tinnitus, mild hearing loss, and 28 possibly hyperacusis in humans and other animals. Salicylate has well-established effects on 29 cochlear function, primarily resulting in the moderate reduction of auditory input to the brain. 30 Despite decreased peripheral sensitivity and output, salicylate induces a paradoxical 31 enhancement of the s...

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