نتایج جستجو برای: drought and salinity

تعداد نتایج: 16836427  

Journal: :Plant physiology 2014
Ronald Pierik Christa Testerink

Environmental stresses, such as shading of the shoot, drought, and soil salinity, threaten plant growth, yield, and survival. Plants can alleviate the impact of these stresses through various modes of phenotypic plasticity, such as shade avoidance and halotropism. Here, we review the current state of knowledge regarding the mechanisms that control plant developmental responses to shade, salt, a...

2016
Himanshu V Patankar Dekoum V M Assaha Rashid Al-Yahyai Ramanjulu Sunkar Mahmoud W Yaish

Date palm is an important crop plant in the arid and semi-arid regions supporting human population in the Middle East and North Africa. These areas have been largely affected by drought and salinity due to insufficient rainfall and improper irrigation practices. Date palm is a relatively salt- and drought-tolerant plant and more recently efforts have been directed to identifying genes and pathw...

Journal: :پژوهش های زراعی ایران 0
محمّدتقی عبادی اکرم فرزانه عباداله عبادی سیّدحسین نعمتی

salvia genus has 58 annual and perennial herbaceous species in iran that 17 species are endemic and salvia sahendica boiss & buhse is one of them. in order to investigate the effects of drought stress caused by peg 6000 and salinity stress induced by nacl on germination factors of salvia sahendica, two experiments were carried out based on a completely randomized design with 3 replications. in ...

Journal: :Archives of biochemistry and biophysics 2005
Shilpi Mahajan Narendra Tuteja

World population is increasing at an alarming rate and is expected to reach about six billion by the end of year 2050. On the other hand food productivity is decreasing due to the effect of various abiotic stresses; therefore minimizing these losses is a major area of concern for all nations to cope with the increasing food requirements. Cold, salinity and drought are among the major stresses, ...

Catharanthus roseus L. is an important medicinal plant producing several terpenoid indole alkaloids (TIAs) such as vincristine and vinblastine secondary metabolites with anticancer activity. The TIAs biosynthetic pathways are affected by biotic and abiotic stresses. In this study the effect of drought (7 days), salinity (150 mM NaCl), foliar spray of salicylic acid (10-5 M) and salicylic acid i...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2006
Honghong Hu Mingqiu Dai Jialing Yao Benze Xiao Xianghua Li Qifa Zhang Lizhong Xiong

Drought and salinity are major abiotic stresses to crop production. Here, we show that overexpression of stress responsive gene SNAC1 (STRESS-RESPONSIVE NAC 1) significantly enhances drought resistance in transgenic rice (22-34% higher seed setting than control) in the field under severe drought stress conditions at the reproductive stage while showing no phenotypic changes or yield penalty. Th...

2017
Dylan Chapple Iryna Dronova

Tidal wetland restoration efforts can be challenging to monitor in the field due to unstable local conditions and poor site access. However, understanding how restored systems evolve over time is essential for future management of their ecological benefits, many of which are related to vegetation dynamics. Physical attributes, such as elevation and distance to channel play important roles in go...

2015
A. Muscolo A. Junker C. Klukas K. Weigelt-Fischer D. Riewe T. Altmann

Drought and salinity are among the major abiotic stresses which, often inter-relatedly, adversely affect plant growth and productivity. Plant stress responses depend on the type of stress, on its intensity, on the species, and also on the genotype. Different accessions of a species may have evolved different mechanisms to cope with stress and to complete their life cycles. This study is focused...

Salt and drought are two major environmental stresses that affect growth and development of plants. In order to study the effects of sodium chloride and polyethylene glycol (6000) on germination characteristics and early seedling growth of redroot pigweed (Amaranthus retroflexus), two completely randomized designs with 4 replications were conducted at Weed Research Laboratory of Bu-Ali Sina Uni...

Journal: :تحقیقات آب و خاک ایران 0
حسینعلی علیخانی دانشیار، دانشگاه تهران

in this research 220 rhizobial bacteria were isolated from two lentil dryland farming flat plains of moghan and koohin. they were then tested in vivo as well as in vitro to make assurance of 184 purified strains of rhizobium leguminosarum biovar vicial (lentil). btb +yma culture media with different levels of salinity through nacl (10, 20,30,40,50ds/m) application were used in salinity toleranc...

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