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Effects of The Exogenous IAA Applıcatıons on Salt Tolerance in Tomato (Solanum lycopersicum L.)
Abstract
In this study, the effectiveness of indole-3-acetic acid (IAA) applications in providing salt stress tolerance in tomato was investigated. TOM-141 (tolerant) and TOM-139 (sensitive) genotypes and AG5668 tomato cultivar were used as materials in the study. For stress plants, salt (200 mM NaCl) stress was initiated at 3 true leaf stages. Control plants were irrigated with nutrient solution. In IAA applications, 0.05, 0.25, 0.50, 0.75, 1.00 and 2.00 mM doses were used together with salt stress, and it was applied as a foliar spray once a week. Salt stress caused a decrease in plant growth parameters, YOSI, K and Ca ion concentration, total chlorophyll and carotenoid and total flavonoid content in tomato genotypes; Na and Cl ion concentration, MDA and total phenolic substance content increased. On the other and, in IAA applications with salt stress, on average 8-93% in fresh and dry weight; 7-65% in stem length and diameter; 22-329% in leaf number and area, 18-30% in YOSI values; 12-34% in K content; 9-37% in Ca content; 3-125% in total chlorophyll and carotenoid content; 7-107% improvement was achieved in total phenolic substance and flavonoid content compared to salt stress. This change was determined as 2-73% improvement in salt stress conditions in AG5668 tomato variety, 2-39% in TOM-141 genotype and 3-221% in TOM-139 genotype The decrease in Na, Cl and MDA levels at the genotype level with IAA application was 11-31% in AG5668, 12-21% in TOM141 and 16-35% in TOM 139. As a result of the study, it was determined that IAA applications improved the negativities caused by salt stress at varying rates and were effective in increasing tolerance, and 0.25 mm and 0.50 mM IAA applications came to the fore in terms of this positive effect among the applications.
Keywords
Destekleyen Kurum
Çankırı Karatekin Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi
Proje Numarası
KYO080120L04
Teşekkür
Bu çalışma Çankırı Karatekin Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi tarafından KYO080120L04 numaralı proje ile desteklenmiştir.
Kaynakça
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Ayrıntılar
Birincil Dil
Türkçe
Konular
Bahçe Bitkileri Yetiştirme ve Islahı
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
15 Nisan 2022
Gönderilme Tarihi
7 Aralık 2021
Kabul Tarihi
14 Şubat 2022
Yayımlandığı Sayı
Yıl 1970 Cilt: 8 Sayı: 1