Differential response of biochar in mitigating salinity stress in periwinkle (Catharanthus roseus L.) as an ornamental-medicinal plant species.

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Seyedeh Fatemeh Mohammadi Kabari, Hossein Ali Asadi-Gharneh, Vahid Tavallali, Vahid Rowshan
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Abstract

To investigate the effect of various levels of salinity and biochar on the growth and biochemical traits of Catharanthus roseus L., a medicinal plant, a factorial experiment with three levels of biochar (0, 2, and 4%) and four levels of salinity (0, 1,000, 2,000, and 3,000 mg/kg soil) was conducted in pots under greenhouse conditions, in three replications, 36 pots, and 6 plants/plot. Salinity reduced the vegetative and reproductive growth and Ca and K uptake, and chlorophyll content of the plants, and increased the Na+, Cl-, electrolyte leakage, and antioxidant enzyme (SOD, CAT, GPX) activities. Biochar improved all the vegetative and reproductive growth and biochemical traits of Catharanthus roseus L. and enhanced soil fertility. The application of biochar at the rate of 2% at all four levels of NaCl reduced the activity of antioxidants and decreased electrolyte leakage, reflecting the alleviation of salinity effects and the retention of cell health for survival. The application of biochar 2% was more effective than biochar 4% in alleviating salinity stress. Therefore, by using 2% biochar, it is possible to improve saline soils (soils containing 1,000 or 2,000 mg/kg NaCl) and grow periwinkle ornamental-medicinal plant in it. The plants showed acceptable performance at salinity levels of 1,000 or 2,000 mg/kg with biochar 2%.

生物炭在缓解长春花(Catharanthus roseus L.)作为观赏和药用植物物种的盐度胁迫方面的不同反应。
为了研究不同盐度和生物炭对药用植物蔷薇(Catharanthus roseus L.)的生长和生化性状的影响,我们在温室条件下的花盆中进行了一项因子实验,实验采用了三种生物炭添加量(0、2和4%)和四种盐度添加量(0、1,000、2,000和3,000 mg/kg土壤),三次重复,36个花盆,6株/地。盐分降低了植物的无性和生殖生长、钙和钾的吸收以及叶绿素含量,增加了 Na+、Cl-、电解质渗漏和抗氧化酶(SOD、CAT、GPX)活性。生物炭改善了长春花(Catharanthus roseus L.)的所有无性和生殖生长及生化性状,并提高了土壤肥力。在所有四种 NaCl 水平下施用 2% 的生物炭都能降低抗氧化剂的活性,减少电解质的渗漏,这反映出生物炭能减轻盐度的影响,保持细胞健康以利于存活。在缓解盐度胁迫方面,施用 2% 的生物炭比施用 4% 的生物炭更有效。因此,使用 2% 的生物炭可以改良盐碱土(含 1,000 或 2,000 毫克/千克 NaCl 的土壤),并在其中种植长春花观赏药用植物。在含盐量为 1,000 或 2,000 毫克/千克的土壤中,使用 2% 的生物炭后,植物的表现可以接受。
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来源期刊
International Journal of Phytoremediation
International Journal of Phytoremediation 环境科学-环境科学
CiteScore
7.60
自引率
5.40%
发文量
145
审稿时长
3.4 months
期刊介绍: The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
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