Kadmiyum ile kirli alanlarda bitki besin elementlerinin alınımı üzerine indol asetik asitin etkisi

Yıl 2019, Cilt: 7 Sayı: 2, 80 - 85, 31.12.2019

Gizem Aksu

https://doi.org/10.33409/tbbbd.668605

Cited By: 1

Öz

Bu çalışmada amaç; çeşitli nedenler sonucunda ortamlarda birikmiş olan kadmiyumun bitki tarafından alınmasını azaltmak amacı
ile uygulanan indol asetik asitin, bitki besleme amacı ile verilen besin elementlerinin alımı ve birikimi üzerine etkisinin
belirlenmesidir. Denemede materyal olarak; 5 kadmiyum dozu (0, 50, 100, 150, 200 µM Cd) ve 3 indol asetik asit dozu (0; 1 ve 10
µM), ortam materyali olarak perlit ve bitki materyali olarak da marul kullanılmıştır. Bitkiler Hoagland besin solusyonu ile
yetiştirilmiş, hasat edilmiştir. Hasattan sonra bitki örneklerinin yaş ve kuru ağırlığı, yaprak en, boy ve nem içeriği, fosfor (P),
potasyum (K), magnezyum (Mg), kalsiyum (Ca), kükürt (S), demir (Fe), mangan (Mn) içerikleri belirlenmiştir. Denemeden elde dilen
sonuçlara göre bitki yaş ve kuru ağırlığı 0 ve 50 µM Cd olan ortamda artan IAA dozuna bağlı olarak artış göstermiş ancak Cd
dozunun artmaya devam etmesi ile azalmıştır. İndole asetik asit uygulanmayan ortamda bitkilerin fosfor, kükürt ve potasyum
içerikleri artan Cd dozları ile artış göstermiş ancak doz 200 µM Cd çıktığında azalmıştır. Bitkilerin fosfor, kükürt ve potasyum
içerikleri ortamda Cd konsantrasyonu artarken yapılan IAA uygulamaları ile artış göstermiştir, 200 µM Cd olan ortamda 10 µM IAA
uygulamasında azalma olmuştur. Bitkilerin demir içeriği Cd birikimi olmayan ortamda 1 µM IAA kullanımında artış göstermiş IAA
dozu 10 µM olunca azalmıştır. Mangan içeriği ise Cd uygulanmayan ortamdaki bitkilere yapılan IAA uygulaması ile kontrole göre
azalmıştır. Mangan içeriği 50 ve 100 µM Cd uygulanmış ortamda demir içeriği ise 50, 100, 150 µM Cd uygulanmış ortamda yapılan
IAA uygulaması ile kontrole göre azalış göstermiştir.

Anahtar Kelimeler

Ağır metal, kirlilik, hormon, sebze

The effect of indole acetic acid on nutrient uptake within cadmium accumulation zones

Öz

The objective of this study is to determine the effect of indole acetic acid (IAA), which is applied to reduce plant uptake of cadmium
in accumulation zones, on the uptake and accumulation of plant nutrients. This research was conducted on lettuce plants with
perlite as the medium, and treated with 5 doses of cadmium (0, 50, 100, 150, 200 µM Cd) and 3 doses of IAA (0, 1, 10 µM). The
plants were grown with Hoagland Nutrition Solution and then harvested. After harvesting, the fresh and dry weight of the plants,
leaf length, width and moisture content, phosphorus (P), potassium (K), magnesium (Mg), calcium (Ca), sulphur (S), iron (Fe) and
manganese (Mn) contents were determined. According to the results obtained from the experiment, the plant fresh and dry weight
increased with an increasing dose of IAA at 0 and 50 μM Cd, but decreased with a continued increase of Cd dose. Phosphorus,
sulphur and potassium content of the plants increased with increasing doses of Cd but decreased when the dose was increased to
200 μM Cd in the medium with no application of indole acetic acid. Phosphorus, sulphur and potassium content of the plants
increased with the IAA applications; however, as the Cd concentration increased in the medium, there was a decrease in the 10 μM
IAA application in the medium with 200 μM Cd. The iron content of the plants increased with 1μM IAA in the absence of Cd
accumulation, and decreased with IAA of 10 μM. The manganese content decreased with the IAA application to the plants in the
absence of Cd, when compared to the control. Manganese content decreased in the medium with applications of 50 and 100 μM Cd
and iron content decreased with 50, 100, 150 μM Cd, compared to the control with IAA application.

Anahtar Kelimeler

Heavy metal, pollution, hormone, vegetable

Kaynakça

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