Journals / EurAsian Journal of BioSciences (elektronik) / 2008 / Sayı: 2
24-epibrassinolit'le biber (Capsicum annuum)'de tuz toleransının indüklenmesi
- Issue
- 2008 · Sayı: 2
- Pages
- 83–90
- DOI
- —
Abstract
In order to study the effectiveness of brassinosteroids on the amelioration of the inhibitory effect of salinity on pepper plants, a short-term experiment was conducted in greenhouse to test different concentrations of 24-epibrassinolide (0.0, 0.01, 0.05, 0.1, and 0.5 mg L-1) by foliar application on growth, relative water contents and chlorophyll fluorescence of pepper (Capsicum annuum cv. Beldi) plants irrigated with salt water (0.4 g L-1 NaCl). Salt decreases the different parameters of growth. However, its effects were more pronounced on the shoot than root growth. An exogenous supply of 24-epibrassinolide was found to be successful in alleviating of the inhibitory effects of salt stress on shoot growth parameters and the leaf relative water contents. However, non-significant effect of 24-epibrassinolide was observed on root growth and chlorophyll fluorescence. Out of the five concentrations, the effects of 0.5 mg L-1 proved the best under stress conditions.
Özet
Biber bitkilerinde, tuzlulugun inhibitor etkilerini gidermede rassinosteroitlerin etkinligini arastirmak uzere, sera kosullarinda kisa donemli bir test gerceklestirildi. Tuzlu su ile sulanan biber bitkilerinde (Capsicum annuum) farkli 24-epibrassinolit konsantrasyonlarinin (0.0, 0.01, 0.05, 0.1, ve 0.5 mg L-1) yapraklara uygulanmasinin buyume, nispi su icerigi ve klorofil floresansi uzerine etkileri incelendi. Tuz, cesitli buyume parametrelerini etkiler. Ancak, tuzun etkileri koklerden ziyade surgunlerde daha belirgindi. 24-epibrassinolit'in harici uygulanmasinin, surgun buyume parametreleri ve yaprak nispi su icerigi uzerindeki tuz stresinin inhibitor etkilerini gidermede etkili oldugu goruldu. Ancak, 24-epibrassinolit'in, kok buyumesi ve klorofil floresansi uzerinde onemli bir etkisi gozlenmedi. Bes konsantrasyon icerisinde, stres sartlari altinda 0.5 mg L-1'nin en iyi sonucu verdigi goruldu.