Effect of Silicon Application on Wheat Under Boron Stress

Yıl 2019, Cilt: 23 Sayı: 3, 743 - 747, 25.12.2019

İbrahim Ertan Erkan

https://doi.org/10.19113/sdufenbed.535286

Cited By: 1

Öz

In this study, effects of different silicon (Si)
concentrations (0.75, 5, 10 mM) on wheat under boron(B) stress, investigated by
means of some stress indicators such as tissue length, malondialdehyde (MDA),
ion leakage, relative water content (RWC) and total chlorophyll content. Stress
mitigating effects of silicon were observed mainly as reductions on membrane
damage with reduced MDA concentrations and decreased ion leakage levels. Although
necrosis was present on shoot tissues due to the boron stress, no significant
change observed on shoot and root length with the application of Si. On the
contrary, relative water content (RWC) has changed positively with the
implementation of Si under boron stress. Furthermore Si has enhanced RWC level
in Si+B co-applicated sets to the level of control plants. Total chlorophyll
content increased with the existance of 0.75 and 5 mM Si, while 10 mM Si had no
effect on the chorophyll content under boron stress. Overall, silicon was found
to have a potential to alleviate boron stress in wheat production.

Anahtar Kelimeler

Boron toxicity, Silicon treatment, Wheat boron stress, Membran damage, Relative water content, Chlorophyll content

Silisyum Uygulamasının Bor Stresi Altındaki Buğday Üzerindeki Etkisi

Öz

Bu araştırmada, bor (B) stresi altındaki buğday
bitkisinde farklı silisyum (Si) konsantrasyonlarının (0.75, 5, 10 mM) etkisi, doku
uzunluğu, malondialdehit (MDA), iyon sızıntısı, bağıl su içeriği (RWC) ve
toplam klorofil içeriği gibi bazı stres göstergeleri aracılığıyla
incelenmiştir. Silisyumun stres azaltıcı etkisi membran hasarının
iyileştirilmesi ile MDA ve iyon sızıntısı seviyelerinin pozitif düzenlenmesi
üzerinde gözlenmiştir. Bor (B) stresi nedeniyle gövde dokularında nekroz
meydana gelmesine rağmen silisyum uygulamasının sürgün ve kök uzunlukları
üzerinde önemli bir değişiklik gerçekleştirmediği gözlemlenmiştir. Ancak tam
aksine bağıl su içeriği (RWC), bor stresi altında silisyum uygulanması ile
pozitif olarak değişmiştir. Ayrıca silisyum ve bor stresinin (Si+B) birlikte
uygulandığı setlerde silisyum, bağıl su içeriğini kontrol bitkilerindeki
seviyelere kadar artırmaktadır. Toplam klorofil içeriği 0.75 ve 5 mM silisyum
varlığı ile artarken 10 mM silisyumun bor stresi altında klorofil içeriğine
herhangi bir etkisi olmamıştır. Genel olarak, silisyumun buğday üretiminde bor
stresini azaltıcı bir potansiyele sahip olduğu bulunmuştur.

Anahtar Kelimeler

Bor toksisitesi, Silisyum uygulaması, Buğday bor stresi, Membran hasarı, Bağıl su içeriği, Klorofil içeriği

Kaynakça

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