نتایج جستجو برای: boron toxicity

تعداد نتایج: 135738  

Journal: :journal of agricultural science and technology 2010
h. rezaei m. j. malakouti

cotton (gossypium hirsutum l. cv. varamin ) an important industrial crop of iran, is grown in 300,000 ha, with an average seed -cotton yield of 1750 kg.ha-1. the main obstacle in the way of increasing average cotton yield is imbalanced fertilizer use. along with urea and triple super phosphate, cotton growers also need k, mg, zn, fe, mn, cu, and b, so these elements’ critical levels should ...

Journal: :علوم باغبانی ایران 0
حجت اله رستمی دانشجوی سابق کارشناسی ارشد دانشکده کشاورزی دانشگاه تبریز سید جلال طباطبایی استاد، دانشکده کشاورزی دانشگاه تبریز فریبرز زارع نهندی استادیار دانشکده کشاورزی دانشگاه تبریز محمد رحمن پورآذر دانشجوی سابق کارشناسی ارشد دانشکده کشاورزی دانشگاه تبریز

boron toxicity usually occurs in arid and saline soils. among all the pollutant'sresource, irrigation water is the most important factor in boron elevating in the soil.modification of boron-rich soils is difficult and in this case, resistant varieties can playan important role in increasing the cultivation in areas with high boron level. to assessthe effects of different concentrations of ...

Journal: :علوم باغبانی 0
حجت اله رستمی سید جلال طباطبایی فریبرز زارع نهندی جعفر حاجی لو

boron toxicity is one of the most important disorders for plant cultivation in the arid and semi-arid regions. boron accumulation usually occurs in deeper soil layers due to leaching and therefore improvement of such a soil in this situation is difficult. an experiment was conducted to find out the effect of boron on the vegetative and physiological aspects of olive trees. six concentrations of...

2016
Kefeng Fang Weiwei Zhang Yu Xing Qing Zhang Liu Yang Qingqin Cao Ling Qin

Boron is an important micronutrient for plants. However, boron is also toxic to cells at high concentrations, although the mechanism of this toxicity is not known. This study aimed to evaluate the effect of boron toxicity on Malus domestica pollen tube growth and its possible regulatory pathway. Our results showed that a high concentration of boron inhibited pollen germination and tube growth a...

2010
María Begoña Herrera-Rodríguez Agustín González-Fontes Jesús Rexach Juan J. Camacho-Cristóbal José M. Maldonado María Teresa Navarro-Gochicoa

To date, the primordial function of boron is its structural role in the cell wall through stabilization of molecules containing cis-diol groups (borate esters with apiose residues of rhamnogalacturonan II). Nonetheless, boron is a micronutrient also involved in a great variety of physiological processes in vascular plants. However the mechanisms underlying the various metabolic disorders caused...

Journal: :Environmental toxicology and chemistry 2001
G Loewengart

From the large data set available on the toxicity of boron to aquatic organisms, the toxicity of boron to the early life stages of rainbow trout (Oncorhyncus mykiss) is the seminal issue relative to setting water quality criteria and effluent standards. Issues associated with the early life stage studies are the flat concentration-response curve, the low threshold of toxicity, and teratogenic e...

Boron is an essential plant micronutrient that is involved in the cell wall and membrane structure and functioinig. Boron is often found in high concentrations in association with agriculture in arid  and semi-arid regions. In order to investigate the effect of zinc sulfate on some morphological, physiological and biochemical characteristics of two grapvine cultivars under toxicity of boron, a ...

ژورنال: علوم آب و خاک 2015
اسفندیارپور, عیسی, شیرانی, حسین, مصلایی, مریم, مظفری, وحید,

Salinity and ions toxicity are one of the main problems of agricultural lands in arid and semi-arid regions, such as Iran. In addition to the salinity problem, some other marks like boron toxicity in crops have been seen in Hossein Abad area as one of the main agricultural regions of Yazd. Therefore, this study intends to evaluate and analyze spatial variability of soil salinity as an aspect of...

Journal: :asia pacific journal of medical toxicology 0
mukta rani department of forensic medicine, lady hardinge medical college, new delhi, india mahesh chand meena department of forensic medicine, lady hardinge medical college, new delhi, india

background: boric acid (ba) is commonly used as pesticide, disinfectant and wood preservative. its ingestion can cause serious organ damages resulting in death. case report: a 19 year old man was found dead with two empty packs of ba tablets in vicinity of his body. on autopsy examination, brownish stains along with right angle of mouth and right nostril were found. stomach was damaged with hem...

2017
Qiang Lv Lei Wang Jin-Zheng Wang Peng Li Yu-Li Chen Jing Du Yi-Kun He Fang Bao

Boron is an essential mineral nutrient for higher plant growth and development. However, excessive amounts of boron can be toxic. Here, we report on the characterization of an Arabidopsis mutant, shb1 (sensitive to high-level of boron 1), which exhibits hypersensitivity to excessive boron in roots. Positional cloning demonstrated that the shb1 mutant bears a point mutation in a gene encoding a ...

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