Murat OLGUN, Metin TURAN, Zekiye BUDAK BAŞÇİFTÇİ, N Gözde AYTER, Murat ARDIÇ, Sinem TAŞCI, Onur KOYUNCU, Celalettin AYGÜN

Aşırı su stresinin Arpa’da Hordeum vulgare verim unsurları ve kimyasal bileşenler üzerine etkisi

Bu çalışmada aşırı su basmasının arpada başak ağırlığı, başakta tane ağırlığı, yaprak ve sap kuru ağırlığı, toplam ağırlık, klorofil miktarı, mineral miktarı, amino ve organik asit düzeyleri üzerindeki etkileri belirlenmiştir. Uzayan su basmasına bağlı olarak arpada gelişim geriliklerine ve fotosentez oranında önemli düşüşler belirlenmiş; bunun göstergesi olarak ta başak ağırlığı, başakta tane ağırlığı, yaprak ve sap kuru ağırlığı, toplam kuru ağırlık ve klorofil miktarında önemli düşüşler belirlenmiştir. Uzayan su basmasına bağlı olarak N, P, K, Ca, Mg, Na, Zn ve toplam mineral miktarında önemli düşüşler kaydedilirken; Fe, Cu ve Mn miktarında artışlar kaydedilmiştir. Bu üç elementin Fe, Cu ve Mn fotosentezde önemli görev üstlenmelerinin yanısıra aşırı su basmalarında toksit etki yapacak kadar bir artışa neden olduğu belirlenmiştir. Buna ilaveten uzayan su basmasına bağlı olarak amino ve organik asit seviyelerinde artışlar belirlenmiştir. Okzalik asit, propiyonik asit, butirik asit, laktik asit, sitrik asit, malik asit ve absisik asit miktarlarında önemli artışlar belirlenirken gibberelik asit, salisilik asit, IAA ve toplam organik asit düzeylerinde düşüşler kaydedilmiştir. Sonuç olarak uzayan su basmasına bağlı olarak verim unsurları, mineral miktarları, amino asit ve organik asit miktarlarında önemli değişimler ortaya konmakla birlikte; arpa çeşitlerinden İnce arpa genotipi Kalaycı arpa genetipine göre uzayan su basmasına daha dayanıklı arpa çeşiti olduğu belirlenmiştir

Anahtar Kelimeler:

Arpa, aşırı su basması, verim unsurları, kimyasal içerikler, mineraller, amino ve organik asitler

Impact of waterlogging stress on yield components and chemical characteristics of Barley Hordeum vulgare

The aim of this trial was to assess the effect of waterlogging on spike weight, grain weight per spike, dry leave weight, dry culm weight, total weight, contents of chlorophyll and mineral, amino acids and organic acids in barley. Barley under waterlogging stresses exhibited growth reduction and photosynthesis declination as reflected by decline in spike weight grain weight per spike dry leave weight dry culm weight total weight and chlorophyll content. Prolonging waterlogging caused decrease in N, P, K, Ca, Mg, Na, Zn and total amount of minerals; whereas toxic minerals, Fe, Cu and Mn increased. Increased timing in excess water made a considerable increase in levels of amino acids organic acids. While oxalic, propionic, butyric, lactic, citric, malic and abscisic acids increased; decreases were recorded in levels of giberellic, salicylic, indole acetic acids and total organic acids with increasing timing of waterlogging. In conclusion, prolonging waterlogging has significant effect on yield components, levels of minerals, amino acids and organic acids in barley. Ince genotype showed better performance and more resistance to waterlogging than Kalaycı

Keywords:

Barley, waterlogging, yield components, chemical characteristics,

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