نتایج جستجو برای: salinity index

تعداد نتایج: 419339  

2017
Yong-Fu Lin Chau-Ron Wu Yu-San Han

Satellite data and assimilation products are used to investigate fluctuations in the catch of Japanese eel (Anguilla japonica) in eastern Asian countries. It has been reported that the salinity front has extended farther south, which has shifted the eel's spawning grounds to a lower latitude, resulting in smaller eel catches in 1983, 1992, and 1998. This study demonstrates that interannual vari...

صفاری, وحید رضا, عسکری, مهدیه, مقصودی مود, علی اکبر,

A great part of lands under corn cultivation are affected by different levels of salt stress. This study was conducted in order to determine the effect of different levels of salt stress on yield and some physiological characteristics of corn plants. Two experiments were carried out in greenhouse (a factorial based on randomized complete blocks design with 3 replications), and field (a split pl...

Journal: :Comparative biochemistry and physiology. Part A, Molecular & integrative physiology 2015
Mélanie Gaillard Louis Bernatchez Réjean Tremblay Céline Audet

Energy status was analyzed in glass eels captured during two early waves of arrival at the mouths of the Mersey River, Nova Scotia, Canada (MR), and Grande-Rivière-Blanche, Québec, Canada (GRB), and according to their salinity preference (freshwater, brackish, or saltwater). Glass eels captured in the GRB estuary were larger, more pigmented, and exhibited higher whole-body glycogen, phospholipi...

2018
Yang Zeng Qing Li Haiya Wang Jianliang Zhang Jia Du Huimin Feng Eduardo Blumwald Ling Yu Guohua Xu

The NHX-type cation/H+ transporters in plants have been shown to mediate Na+ (K+ )/H+ exchange for salinity tolerance and K+ homoeostasis. In this study, we identified and characterized two NHX homologues, HtNHX1 and HtNHX2 from an infertile and salinity tolerant species Helianthus tuberosus (cv. Nanyu No. 1). HtNHX1 and HtNHX2 share identical 5'- and 3'-UTR and coding regions, except for a 342...

Journal: :Science 2002
S S Jacobs C F Giulivi P A Mele

Ocean measurements in the Ross Sea over the past four decades, one of the longest records near Antarctica, reveal marked decreases in shelf water salinity and the surface salinity within the Ross Gyre. These changes have been accompanied by atmospheric warming on Ross Island, ocean warming at depths of approximately 300 meters north of the continental shelf, a more negative Southern Oscillation...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0
عمار بهاری اردشیری دانشجوی دکتری زراعت، دانشگاه آزاد اسلامی واحد آیت الله آملی عباس عظیم نژاد دانشجوی دکتری زراعت، دانشگاه آزاد اسلامی واحد آیت الله آملی یوسف نیک نژاد استادیار گروه زراعت، دانشگاه آزاد اسلامی واحد آیت الله آملی هرمز فلاح آملی استادیار گروه زراعت، دانشگاه آزاد اسلامی واحد آیت الله آملی

in order to evaluate the morphological changes of rice seedlings (variety of neda and fajr) under salinity management in 1394 was conducted in islamic azad university, ayatollah amoli. this factorial experiment in a completely randomized design with two genotypes (varieties neda and fajr) in four salinity levels (zero, 40, 80 and 120 mm sodium chloride) and was performed in triplicate. results ...

2013
Larry R. Brown William A. Bennett R. Wayne Wagner Tara Morgan-King Noah Knowles Frederick Feyrer David H. Schoellhamer Mark T. Stacey Michael Dettinger

Changes in the position of the low salinity zone, a habitat suitability index, turbidity, and water temperature modeled from four 100-year scenarios of climate change were evaluated for possible effects on delta smeltHypomesus transpacificus, which is endemic to the Sacramento–San Joaquin Delta. The persistence of delta smelt in much of its current habitat into the next century appears uncertai...

Journal: :journal of agricultural science and technology 2011
ch. deng g. zhang x. pan

many phragmites-dominated wetlands have been markedly salinized and alkalinized in the songnen plain, northeastern china. agricultural wastewater with high nitrogen content has been discharged into these alkalinized-salinized wetlands. to understand the effect of salinity-alkalinity on reed (phragmites australis) seedlings at various nitrogen levels, we examined photosynthesis rate, chlorophyll...

Journal: :پژوهش های زراعی ایران 0
محمد حسین شریعتمداری غلامرضا زمانی محمد حسن سیاری

salinity stress results to decreasing leaf area index (lai) and light absorption in plant leading in yield decrease. in order to study effect of salinity and iron sulphate on lai, absorbed light percentage and yield of sunflower (euroflor cultivar), an experiment was carried out as split plot based on complete randomized block design with four replications in the research field of university of...

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