Melek Akar’s scientific contributions

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Publications (3)


Priming Uygulamalarının Kadmiyum ve Nikel Stresine Maruz Bırakılan Kırmızı Yumağın Çimlenme ve Fide Gelişimi Üzerine Etkisi The Effects of Priming Treatments on Germination and Seedling Growth of Red Fescue under Nickel and Cadmium Stress
  • Article
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January 2019

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66 Reads

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6 Citations

Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi

Melek Akar

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Abstract: The objectives of this study were to determine effects of different priming treatments on germination and seedling growth in red fescue infected with different levels (0, 75, 150 and 300 mg l-1) of cadmium and nickel. The study was conducted under laboratory conditions. In the study, two heavy metal kinds (Cadmium (Cd) and Nickel (Ni)) were considered 3 different concentrations (75, 150, 300 mg l-1) and distillate water as control application. To determine the effect of germination priming under heavy metal stress, 2% KNO 3 and 500 ppm GA 3 were used as priming agents. The research was performed as factorial arrangement of completely randomized design with four replications. The results of study indicated that both germination and seedling growth properties were negatively affected by both heavy metal kinds. Priming treatments were ineffective in reducing the effects of heavy metals on germination properties. Germination at high doses of heavy metals was negatively affected by priming treatments. There wasn't positively effect on root length of red fescue of priming treatments, while shoot length was positively affected by GA3 treatment. Also, the negatively effects on germination and seedling growth of nickel were greater than cadmium.

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KADMİYUM VE NİKEL STRESİ ALTINDAKİ KAMIŞSI YUMAĞIN (FESTUCA ARUNDINACEA SCHREB.) ÇİMLENMESİ VE FİDE GELİŞİMİ ÜZERİNE PRIMING UYGULAMALARININ ETKİSİ The Effects of Seed Priming Pretreatments on Germination and Seedling Growth in Tall Fescue under Cadmium and Nickel Stress

October 2018

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304 Reads

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1 Citation

zet Bu çalışma kamışsı yumağın kadmiyum ve nikelin farklı dozlarındaki çimlenme ve fide gelişimi üzerine farklı priming uygulamalarının etkilerini belirlemek amacıyla yürütülmüştür. Çalışma laboratuvar koşullarında yürütülmüştür. Araştırmada iki ağır metalin (Kadmiyum (Cd) ve Nikel (Ni)) 3 farklı konsantrasyonu (75, 150, 300 mg l-1) ile destile su kontrol uygulaması olarak dikkate alınmıştır. Ayrıca ağır metal uygulamaları altında priming uygulamalarının çimlenmeye etkisini belirlemek amacıyla % 2'lik KNO3, 500 ppm GA3 ve Hydropriming uygulamaları priming uygulamaları olarak kullanılmıştır. Araştırma tesadüf parsellerinde faktöriyel deneme desenine göre 4 tekrarlamalı olarak kurulmuş ve yürütülmüştür. Kamışsı yumakta fide özellikleri ve çimlenme özellikleri artan metal dozlarından olumsuz yönde etkilenmiştir. Kamışsı yumak kök uzunluğu KNO3 uygulamalarında diğerlerinden daha yüksek olmuştur. Fide uzunluğu ve fide ağırlığı ise GA3 uygulaması ile artmıştır. Kamışsı yumağın çimlenme özellikleri üzerine nikelin olumsuz etkilerinin kadmiyumdan daha yüksek olduğu belirlemiştir. Her iki metal türünün de artan dozları ile birlikte kamışsı yumağın çimlenmesi olumsuz etkilenmiştir. Bununla birlikte, uyarıcı olarak kullanılan GA3 ve KNO 3 'ün özellikle yüksek ağır metal dozlarında kamışsı yumağın çimlenme özelliklerini olumsuz yönde etkilediği belirlenmiştir. Bu durum ağır metal varlığında GA3 ve KNO3 açısından kamışsı yumağın çimlenme özellikleri üzerinde beklenen etkiyi göstermemiştir. Abstract The aims of this study were to investigate effects of priming treatments on germination and seedling growth in tall fescue infected with different levels (0, 75, 150 and 300 mg l-1) of cadmium and nickel. The study was conducted under laboratory conditions. In the study, two heavy metal kinds (Cadmium (Cd) and Nickel (Ni)) were considered 3 different concentrations (75, 150, 300 mg l-1) and distillate water as control treatment. To determine the effect of germination priming under heavy metal stress, 2% KNO3, 500 ppm GA3 and hydropriming were used as priming pretreatments. The research was performed as factorial arrangement of completely randomized design with four replications. Seedling characteristics and germination properties were adversely affected by increasing metal doses in tall fescue. The root length determined in KNO3 treatment was higher than others. The seedling length and seedling weight increased with GA3 treatments. The negatively effects on germination of nickel were greater than cadmium.The germination of tall fescue was negativelly affected with increased both cadmium and nickel doses. Germination at high doses of heavy metals was negatively affected by priming treatments. This


FIGURE 1 Effect of (a) heavy metal kind × heavy metal dose interaction, (b) heavy metal dose × priming interaction on germination percentage
TABLE 1 Mean squares of the combined analysis of variance for investigated characters
The effects of priming pretreatments on germination and seedling growth in perennial ryegrass exposed to heavy metal stress

October 2018

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694 Reads

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12 Citations

Fresenius environmental bulletin

This research was conducted to determine the effects of priming treatments (GA3, KNO3 and Hy-dropriming) on germination and seedling growth in perennial ryegrass contaminated with different doses (0, 75, 150, and 300 mg l-1) of cadmium and nickel. The study was conducted under laboratory conditions. Perennial ryegrass cv. Integra was used as the plant material. The results showed that both germination and seedling growth properties were adversely affected by heavy metals. The adverse effects of nickel were more pronounced than those of cadmium. The GA3 seed priming pretreatment had positive effects on both germination properties and seedling growth. As a result, GA3 can be used as a seed priming agent if the perennial ryegrass is to be grown in areas contaminated with nickel and cad-mium.

Citations (3)


... Similarly, Shafiq et al. (2008) reported that the negative effects of cadmium on seed germination of Leucaena leucocephala were greater than for lead. Çalışkan (2009) reported that the negative effects of cadmium are higher than nickel in line with our findings, while some researchers have expressed opposite results (Akar and Atış, 2018;Akar and Atış, 2019;Houshmandfar and Moraghebi, 2011). This can be explained by the different response of different plants to heavy metal species. ...

Reference:

Germination and Early Seedling Growth in Sweet Sorghum Exposed to Heavy Metal Stress under Seed Priming Pretreatments
Priming Uygulamalarının Kadmiyum ve Nikel Stresine Maruz Bırakılan Kırmızı Yumağın Çimlenme ve Fide Gelişimi Üzerine Etkisi The Effects of Priming Treatments on Germination and Seedling Growth of Red Fescue under Nickel and Cadmium Stress

Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi

... Similarly, Shafiq et al. (2008) reported that the negative effects of cadmium on seed germination of Leucaena leucocephala were greater than for lead. Çalışkan (2009) reported that the negative effects of cadmium are higher than nickel in line with our findings, while some researchers have expressed opposite results (Akar and Atış, 2018;Akar and Atış, 2019;Houshmandfar and Moraghebi, 2011). This can be explained by the different response of different plants to heavy metal species. ...

KADMİYUM VE NİKEL STRESİ ALTINDAKİ KAMIŞSI YUMAĞIN (FESTUCA ARUNDINACEA SCHREB.) ÇİMLENMESİ VE FİDE GELİŞİMİ ÜZERİNE PRIMING UYGULAMALARININ ETKİSİ The Effects of Seed Priming Pretreatments on Germination and Seedling Growth in Tall Fescue under Cadmium and Nickel Stress

... Heavy metals are the main abiotic factors that cause stress in plants (Atis and Akar, 2018). It has been demonstrated that heavy metals affect a wide variety of plant processes, with a clear negative impact on the germination process of seeds. ...

The effects of priming pretreatments on germination and seedling growth in perennial ryegrass exposed to heavy metal stress

Fresenius environmental bulletin